Ppt on event handling in javascript for loop

IT – som værktøj Bent Thomsen Institut for Datalogi Aalborg Universitet.

.write() –forms.elements.radio.click() Object & Properties Object & Methods Handling JavaScript Events Events are actions that the user performs while visiting your page. –Submitting a form and moving a mouse over an image that has a roll-over. JavaScript Event Handlers JavaScript deals with events with commands called event handlers. –In JavaScript, if the user clicks on a button, the onClick() event handler will take note of the action and perform whatever/


 2008 Pearson Education, Inc. All rights reserved. 1 9 9 JavaScript: Functions.

in different frequencies  2008 Pearson Education, Inc. All rights reserved. 39 9.6 Example: Game of Chance JavaScript can execute actions in response to the user’s interaction with a GUI component in an XHTML form. This is referred to as GUI event handling/still open (i.e., it has not finished executing). For recursion eventually to terminate, each time the function calls itself/ This situation is analogous to the problem of an infinite loop in an iterative (nonrecursive) solution.  2008 Pearson Education, /


CGS 3066: Web Programming and Design Spring 2016 Programming in JavaScript.

loop: specify looping condition after the statement block Executes at least once do{ alert(counter); counter++;} while(counter < 10); For Statement For loop: it combines three semicolon-separated pieces information between the parentheses: initialization, condition and a final expression. for(/.setAttribute("src", photoName); Javascript Event Handling Browser-based JavaScript programs are event-driven. This means that a function is called in response to various user actions. An event in a browser is an /


Programming with JavaScript Maureen Smith Professor, Saddleback College CIM 271B - Tutorial 8.

upgrades to handle increased usage /JavaScript program that sends output to Web page A JavaScript program is run by browser either when the page is first loaded, or in response to an event/loop ends for(start; condition; update) { JavaScript Commands } where start is starting value of counter, condition is a Boolean expression that must be true for loop to continue, and update specifies how the counter changes in value each time the command block is executed Like a function, the command block in the For loop/


Georgia Institute of Technology JavaScript part 2 Barb Ericson Georgia Institute of Technology May 2006.

2 Barb Ericson Georgia Institute of Technology May 2006 Georgia Institute of Technology Learning Goals Computing Concepts –How to do loops in JavaScriptJavaScript operators –How to use dialogs in JavaScript –How to handle events in JavaScript Georgia Institute of Technology Using Loops The Simplest Possible Web Page function countToTen() { document.write(" "); for (i=1; i<= 10; i++) { document.write(" Item number: ",i); } document.write(" "); } A Simple Heading This is a very/


Using jQuery In Your Arena Modules Jason Offutt Software Engineer Central Christian Church Tweet about.

to ASP.NET’s server-side page life-cycle Initialize Request Begin Request Page Loading Page Loaded End Request  Event handling in traditional.NET style Optional sender and args parameters for each page event $(document).ready(initAll); Sys.WebForms.PageRequestManager.getInstance().add_endRequest(initAll); function initAll() { // all jQuery events for your module are bound here } Maintaining Client “State” Across Server Posts Problem:  You have a collapsible panel with/


JavaScript, Fourth Edition

and Watches Call stack is the order in which procedures execute JavaScript, Fourth Edition Summary (continued) Writing code that anticipates and handles potential problems is often called bulletproofing Exception handling try, throw, catch, and finally statements JavaScript includes an onerror event that executes whenever an error occurs on a Web page Additional methods and techniques for locating and correcting errors in your JavaScript programs Include checking XHTML elements, analyze/


WTP Unit 4 JavaScript and DHTML. Javascript: – Client side scripting, – What is Javascript, – How to develop Javascript, – Simple Javascript, – Variables,

Questions What do you mean by event in JavaScript? Give at least two examples of events with their handling. (GTU-2011 May)07 Write a JavaScript program to print first N odd numbers divisible by 07 (GTU-2011 May) Answer the following questions with respect to JavaScript.07 1. Give the different purpose for which Javascripts are used. 2. Writing user defined objects in JavaScript. (GTU-2011 May) Write an HTML/


1 Course Notes for CS1520 Programming Languages Part B By John C. Ramirez Department of Computer Science University of Pittsburgh.

, do, for, switch Variables declared in for loop header are global to the rest of the scriptVariables declared in for loop header are global/events  See Sebesta Table 5.1 for events and tag attributes and Table 5.2 for the tags that have a given attribute  Similar in idea to Java, we assign event handling code to the tag attributes, and the code executes when the event occurs Lecture 2: Events We can also attach events in JavascriptWe can also attach events in JavascriptIn DOM 0, events are attached in/


Introducing JavaScript. Javascript code is triggered by “events” Document Eventsonload, onunload Mouse Eventsonclick, ondblclick onmousedown, onmouseup.

JavaScript Operators in delete instanceof new typeof void in The in operator can be used to test for the presence of an index in an array or an element in a JSON dictionary list=[1, 7, 12, 8, 13] if(3 in list) { … } if(‘Maria’ in classList) { … } in can also be used in a foreach loop. It will assume the value of each index or key for(index in list) { … } for(key in/ that an event doesn’t propagate []. [] and. are called the member of operators. In JavaScript they do /.consoleGives one a handle on the console/


Introduction to JavaScript. Bhawna Mallick 2 Unit Objectives To explain the necessity of Scripting To explain writing client side scripting using JavaScript.

the necessity of Scripting To explain writing client side scripting using JavaScript. To discuss about the in-built and user defined objects. To explain event handling using JavaScript Bhawna Mallick 3 Introduction to Scripting Scripting Languages are mainly used to build the programming environment in HTML document Make Web pages dynamic and interactive. Some languages : VBScript, JavaScript, Jscript and ECMA Script Browser Includes Scripting Interpreter Choosing a/


Internet & World Wide Web How to Program, 5/e. ©1992-2012 by Pearson Education, Inc. All Rights Reserved. 2 Revised by Dr. T. Tran for CSI3140.

event handling.  The JavaScript executes in response to the user’s interaction with an element in a form. This interaction causes an event.  Scripts are often used to respond to user initiated events. ©1992-2012 by Pearson Education, Inc. All Rights Reserved. 32 Revised by Dr. T. Tran for CSI3140 The body Element  The elements in the body are used extensively in/and recursion can occur infinitely:  An infinite loop occurs with iteration if the loop- continuation test never becomes false;  infinite /


Session on Java script. Introduction JavaScript is the most popular scripting language on the internet, and works in all major browsers, such as Internet.

other times when a user triggers an event. Introduction Scripts in Scripts to be executed when they are called, or when an event is triggered, go in the head section. If you place a script in the head section, you will ensure /: document.write("Im looking forward to this weekend!"); } JavaScript Loops for Loop The for loop is used when you know in advance how many times the script should run. var i=0; for (i=0;i "); } JavaScript Loops JavaScript While Loop oops execute a block of code a specified number of /


JavaScript Tutorial. What is JavaScript JavaScript is the programming language of HTML and the Web Programming makes computers do what you want them to.

pages Where to put your JavaScript code JavaScript can be placed in either the and/or the sections of your HTML page JavaScript Functions and Events A JavaScript function is a block of JavaScript code, that can be executed when "asked" for For example, a function can be executed when an event occurs, like when the user clicks a button External JavaScript Scripts can also be placed in external files Example: Script/


1 What is JavaScript? JavaScript was designed to add interactivity to HTML pages JavaScript is a scripting language - a scripting language is a lightweight.

other times when a user triggers an event. Scripts in the head section: Scripts to be executed when they are called, or when an event is triggered, go in the head section. When you place a script in the head section, you will ensure that/use looping statements in your code to do this. In JavaScript we have the following looping statements: while - loops through a block of code while a condition is true do...while - loops through a block of code once, and then repeats the loop while a condition is true for -/


Young & Interpreted: Python, Ruby, JavaScript Susan Haynes 18 February 2008 Susan Haynes 18 February 2008.

with differences in syntax: IF, Looping (while, for, etc), Switch, break, continue.  Ruby is a little richer with unless (opposite of if) and until (opposite of while). Event handling All offer event handling with variations in syntax Ruby expressiveness: looping examples /added later, methods can be overridden by adding the new definition.  Single inheritance. Object is the base class. JavaScript class example: defining // see objects.html function Horse (name) { this.name = name; this.getName = /


Javascript Introduction Norman White Material is from w3schools.com Go there to run examples interactively.

loop var i=0; for (i=0;i "); } Continue break current loop and continue with next value var i=0 for (i=0;i "); } Forin Loops through values of an object for (variable in object) { code to be executed } var person={fname:"John",lname:"Doe",age:25}; var x; for (x in person) { document.write(person[x] + " "); } Result: John Doe 25 Events/ you cannot break up a code line like this: document.write ("Hello World!"); Takeaway Javascript is a large language, many features Very powerful Need to be an expert to do /


Paruj Ratanaworabhan, Ben Livshits, and Ben Zorn JSMeter: Characterizing the Behavior of JavaScript Web Applications 1 In collaboration with David Simmons,

an object can be Code|Objects|Events Event Handlers in JavaScript CodeEvents JavaScript Objects 28 Number of events Sizes of handlers Number of events Sizes of handlers Event-driven Programming Model Single-threaded, non-preemptive event handlers Example of some standard event-handler attributes: –onabort, onclick, and onmouseover Very different from batch processing of benchmarks Handler responsiveness critical to user experience 29 Code|Objects|Events Total Events Handled 30 Real Sites V8 Almost/


COM621 – Interactive Web Development Lecture 3 – JavaScript & DOM.

message in an alert box: Trigger an Event Web/loop. This is called the increment expression because it is usually used to increment the counter. i.e. a++ for (var=startvalue; var<=endvalue; var=var+increment) { code to be executed } While Loops Another keyword for loops in JavaScript is while. Unlike for loops, while loops/for the image class to display as a block. SlideShow Create two functions to handle the slide show as described: – the first one (called MakeSlideShow) will find and store all the images in/


Chapter 4 JavaScript and the Document Object Model.

a full-featured language that is loosely-typed and includes object-oriented capabilities. JavaScript has support for different datatypes, various statements including if/else, switch, and different kinds of loops, notation for defining functions that will accept arguments and return a value, exception-handling, notation for defining and creating objects, and support for inheritance. In JavaScript you do not specify a type when declaring variables, objects map property names/


JavaScript: Control Structures September 27, 2005 Slides modified from Internet & World Wide Web: How to Program. 2004 (3rd) edition. By Deitel, Deitel,

to an individual element Write JavaScript code directly in appropriate event attributes Embedded scripts –Embed JavaScript code in an XHTML document—either in the head or in the body x=3; y=9; document.writeln( x + y ); Inserting external scripts –Insert a file with “.js” extension that contains JavaScript code JavaScript libraries can be shared by multiple XHTML documents A note on CDATA – –Necessary for legal XML to ignore & and/


Chapter 21 A Case Study in Algorithmic Problem Solving.

in creating the Smooth Motion application Explain the use of the JavaScript operations for iteration, indexing, arrays, functions, animation controls, and event handlers in Smooth Motion Explain how mouse events are handled in Smooth Motion The Smooth Motion Application Step 0 in/necessary to learn new information to solve a complex problem. Summary –Used the programming facilities covered in earlier chapters—loops, functions, parameters, and so on—as tools to instruct both the computer and humans looking at/


Paruj Ratanaworabhan Kasetsart University, Thailand Ben Livshits and Ben Zorn Microsoft Research, Redmond JSMeter: Characterizing the Behavior of JavaScript.

Code|Objects|Events Event Handlers in JavaScript CodeEvents JavaScript Objects 29 Number of events Sizes of handlers Number of events Sizes of handlers Event-driven Programming Model Single-threaded, non-preemptive event handlers Example handlers: onabort, onclick, etc. Very different from batch processing of benchmarks Handler responsiveness critical to user experience 30 Code|Objects|Events Total Events Handled 31 Real Sites V8 Almost no events Code|Objects|Events Average Bytecodes / Event Handled 32 Code/


This is our seminar JavaScript And DOM This is our seminar JavaScript And DOM.

different from case 1 and 2 } JavaScript loops For loop for (var = startvalue; var <= endvalue; var = increment) { // code to be executed } While loop while (var<=endvalue) { // code to be executed } ForIn for (variable in object) { // code to be executed } Some examples Main content What’s JavaScript? Different between ID and Name. Method Method getElementById () and getElementsByName (). How to manipulate properties of HTML tags? Events of JavaScript. Different between ID and Name ID/


QML and JavaScript for Native App Development Michael Tims Jen Trieu.

- Object, Array, Math, and Date - Syntax for if statements, switch statements, ternary operators, for loops, while loops, and more are no different than using JavaScript in the browser JavaScript functions function declaration function invocation JavaScript Array for loop Conditionals and comparisons console.log JavaScript Date JavaScript Math Callback function Asynchronous Programming with QML Async programming with QML Signal and Handler Event System The event is a signal (ex: mouseClicked) The signal is/


Javascript in practice Davide Morelli. one language to rule them all Browser: JavaScript Server: JavaScript NoSQL: JSON.

code is on same thread! – in the background I/O calls on separate threads – internally uses libev for the event loop node: modules package manager: npm /in /public/javascripts and modify index.jade to h1= title p Things to do: ul#list div.additem form input(id="text", type="text", name="text") input(id="add_submit", type="button", value="add") Client several frameworks: – JQuery, Dojo, MooTools, Prototype, Raphael, etc.. – Why? uniform layer on browser’s craziness easier DOM manipulation and event handling/


1 JavaScript csc667/867 Spring 2006 Ilmi Yoon. 2 Outline Basics of JavaScript, History Basics of the language variables, types, arrays, objects, and functions.

Javascript First Example of JavaScript 53 Example 1: Browser Output 54 Another Example Computing Factorials Another Example of JavaScript document.write(“ Factorial Table ”); for ( i = 1, fact = 1; i < 10; i++, fact = fact * i) { document.write(i + “! = “ + fact); document.write(“ ”); } 55 Another Example 56 JavaScript has Event Handlers Handling Events Example Handling Events in JavaScript/gif” then file must be in relative location “images/docs_on.gif” loop over the elements in this name array, creating /


Client side programming with JavaScript and DHTML Dr Jim Briggs.

JavaScript is lines of code combined with HTML –JavaScript is supported by all major browsers (but in slightly different ways!) –The client has the option not to run JavaScript 3 What can JavaScript do? JavaScript introduces interactivity to web pages –This is achieved by controlling the browser Common uses for JavaScript/mouse out of the area for which the event has been assigned. 37 Form event handling Form handling event are largely used in form validation scripts onSubmit event –Triggered when the user /


JavaScript CS 268. Topics Introduction to JavaScript Positioning a script Variables Type conversions Concatenation HTML forms Document Object Model Functions.

buttons, check boxes, hyperlinks)  onselect (for text fields and text areas)  onchange (for text fields, text areas, selection lists)  onmouseover (for many html elements) Place the event handler name and its associated action directly within the form item tag as an attribute=value  The action is usually a JavaScript function call Anonymous Functions Some of the stranger looking code in JavaScript revolves around anonymous functions  If used/


Web Design: HTML5, CSS3 and JavaScript 小朱 MS MVP on Windows azure.

event jQuery AJAX $.ajax(), $.post(), $.get(), $.getJSON(),... Error Handling JavaScript supports try/catch/finally structure exception handling mechanism/handles file uploads and file manipulation. Directories and System. This API is intended to satisfy client-side-storage use cases not well served by databases. File Writer. An API for writing to files from web applications. Web Audio API, a high-level JavaScript API for processing and synthesizing audio in web applications. Web Worker, Web sockets for/


JQuery 10/21. Today jQuery Some cool tools around the web JavaScript Libraries Drawing libraries HTML Frameworks Conventions.

cool tools around the web JavaScript Libraries Drawing libraries HTML Frameworks Conventions JavaScript in the Real World You need to make sure your code works on all browsers. Some very popular browsers don’t implement basic things according to a standard. Therefore, you often need to have special cases for basic things like event handling. Why People Use Libraries… People use JavaScript libraries to avoid needing to/


Web Programming Introduction to JavaScript 1. The growth of the WWW has resulted in a demand for dynamic and interactive websites. There are many different.

to the public. When not to use JavaScript Java and JavaScript are two completely different languages in both concept and design! JavaScript has some features that resemble features in Java: JavaScript has Objects and primitive data types JavaScript has qualified names; for example, document.write("Hello World"); JavaScript has Events and event handlers Exception handling in JavaScript is almost the same as in Java JavaScript has some features unlike anything in Java: Variable names are untyped: the/


Paruj Ratanaworabhan Kasetsart University, Thailand Ben Livshits and Ben Zorn Microsoft Research, Redmond JSMeter: Characterizing the Behavior of JavaScript.

Event Handlers in JavaScript CodeEvents JavaScript Objects 21 Number of events Sizes of handlers Number of events Sizes of handlers Event-driven Programming Model Single-threaded, non-preemptive event handlers Example handlers: onabort, onclick, etc. Very different from batch processing of benchmarks Handler responsiveness critical to user experience 22 Code|Objects|Events Total Events Handled 23 Real Sites V8 Almost no events Code|Objects|Events Median Bytecodes / Event Handled 24 Code|Objects|Events/


CSC 551: Web Programming Fall 2001 JavaScript objects and events  predefined classes & objects  String, Array, Date, document, navigator  user-defined.

loaded  the ONUNLOAD attribute similarly specifies JavaScript code that is automatically executed when the browser leaves the page Hello/Goodbye page function Hello() { userName=prompt("Welcome to my page. " + "What is your name?",""); } function Goodbye() { userName=alert("So long, " + userName + " come back real soon."); } Whatever text appears in the page. view page in browser User-driven events can add event-handling to anchors and images  ONCLICK/


John Lawrimore, 2014 JavaScript Performance Presenter JOHN - Principal Consultant at.

! What’s wrong with this? Data Property Maintained within the JavaScript engine (not the DOM) Can be global or bound to/event handlers when completed What loop should I use? Loops for for-in for-each [].forEach() $().each() do-while while Selecting a Loop Avoid non-native function based loops Creates closures (and associated overhead) in scope chain Takes about 8-10x as long as basic for loop Avoid for-in and for-each for-in performs expensive type evaluation for-each deprecated in ECMA -357 Selecting a Loop/


Introduction To JavaScript. Putting it Together (page 11) All javascript must go in-between the script tags. All javascript must go in-between the script.

have switch statements Like in Java we have switch statements var thename=“Fred”; switch(thename){ case “George” : window.alert(“George is an OK name”); break; case “Fred” : window.alert(“Fred rules”); break; default : window.alert(“Cool”);} LoopsFor (page 159) We also have the for loop We also have the for loopfor(count=1;count<11;count+=1){ document.write(“I am a loop”); } Event Handler (page 176/


JavaScript basics Chapter 4 of text supplement Most of the text and my examples are in a directory mostly linked at

chapter 6) interpreter Browsers use their JavaScript interpreters to process scripts embedded in html. Client-side input data checking is an important role for JavaScript. Without this, form information goes to the server, which must locate errors and relay them back to the client. Placement in head or body of html Typically function definitions or code for handling events is placed in the head (and accessed if/as needed/


Introduction to Javascript. What is javascript?  The most popular web scripting language in the world  Used to produce rich thin client web applications.

web page  They are not prefaced by “var”  e.g. multiplier = 10; Javascript functions  Often we want to control when javascript executes (i.e. in response to some event on a page)  We can create functions to contain our scripts and call the function when/ switch (count){ case 1 : //do some logic break; case 2: //do some logic break; default: //default logic here break; } LoopingFor loop for (variable=startvalue;variable 10) { throw "Err1"; } else { alert(x); } } catch(err) { //handle exception here }


JavaScript Best Practices Learn How to Write Better Quality JavaScript Software University Technical Trainers SoftUni Team.

will show rendered HTML and CSS before the scripts  At the end load your JavaScript code, and run it at document.ready JavaScript Load in the HTML File (2) 41 Think More Functionally in JavaScript  Use more functional versus imperative programming in JSfunctionalimperative  Log numbers with for -loop  Log numbers with forEach function Think Functional in JavaScript numbers.forEach(function(num) { console.log(num) console.log(num)}); var numbers = [12/


INFSCI  Client Side versus Server Side  Server side PHP, ASP, Cold Fusion, Ruby on Rails Good for accessing databases  Client Side Good for immediacy.

Ex:../myscripts/myjsfile.js  JavaScript:The Missing Manual  /in a var named myLinks  This action returns a list of nodes instead of a single node  Similar to arrays  Can access a single node using index notation  Can use the length property  Can loop using a for loop/Events When web browser fires an event information is stored about the event in an event object  Vertical and horizontal coordinates  the element  when event occurred  The event object is available to the function handling the event/


March 25, 2017 On the Benefits and Pitfalls of Extending a Statically Typed Language JIT Compiler for Dynamic Scripting Languages Jose Castanos, David.

~ 110 call sites need to be inlined Precise data-flow information in the face of many data-flow join for integer reduction loop, between 40 ~ 100 branches Ability to remove redundant allocation, heap-read, and heap-write require precise alias/points-to information Let’s assume that the optimizer can handle local accesses effectively On the Benefits and Pitfalls of Extending a Statically Typed/


Fun in the Web: Web based programming environments Danny Yoo WPI.

x y z → world Programs that run on the phone can take in a variety of events. on-location-change: world latitude longitude → world How can other features/loop unrolling, etc) Simple intermediate language, including assignments, stack operations, gotos... Caveat: GOTOs and pointer arithmetic JavaScript doesnt have GOTO statements, nor does it have pointer arithmetic. GOTO for primitive flow control. Pointer arithmetic for GOTO jumping into offsets of labeled addresses, specifically for the efficient handling/


Introduction to JavaScript Programming. World Wide Web Original purpose was locating and displaying information Small academic and scientific community.

Older browsers may not handle newer JS codes JavaScript and HTML Tags HTML /JavaScript and HTML Tags TagAttributes TagAttributes SCRIPT Tags Four attributes LANGUAGE – identifies version of JavaScript SRC – text string for/the JavaScript code to be executed while the condition is True } the JavaScript code to be executed when the loop is/in a form textbox JS reacts to events by Event Handlers Table I-8 JavaScript Quick Reference (page J A.5) Events are “triggered” Ex. onMouseOver Events:Forms Many event/


 2004 Prentice Hall, Inc. All rights reserved. 1 Chapter 10 - JavaScript: Functions Outline 10.1 Introduction 10.2 Program Modules in JavaScript 10.3.

Prentice Hall, Inc. All rights reserved. 11 10.4 Function Definitions Writing a function to square two numbers –for loop from 1 to 10 –Pass each number as argument to square –return value of argument multiplied by itself –/–name attribute allows scripts to interact with form Event handling and event-driven programming –Assign a function to an event –Onclick Constants –Variable that cannot be modified –Part of many languages, not supported in JavaScript Name “constant” variables with all capital letters/


Philly.NET Hands-on Labs JAVASCRIPT SERIES. July 9: JavaScript Syntax Visual Studio ◦Projects ◦Editors ◦Debugging ◦Script blocks ◦Minification and bundling.

DOM elements using CSS selectors (Sizzle engine) ◦Create animations ◦Handle events ◦Develop Ajax applications Extensive plug-in and extension capability December 3: JavaScript + AngularJS Open-source web application framework maintained by Google and /for single page applications De-emphasizes DOM manipulation and improves testability January 7: JavaScript + BootStrap HTML and CSS design templates for responsive design Typography, forms, buttons, navigation and other interface components Optional JavaScript/


JavaScript Basics Course Introduction SoftUni Team Technical Trainers Software University

/IDEs – JS Development Tools, Debugging Tools, Utilities 2.JavaScript Syntax – Data types, variables, conditional statements… 3.Loops, Arrays and Strings 4.Functions and Objects – Function scope, creating and using objects 5.Working with DOM and Events – Create/Edit elements, basic event handling 6.Teamwork Defense 7.Practical Exam JavaScript Basics – Course Program 6  The "JavaScript Basics" course is NOT for absolute beginners  Take the "C# Basics" course at/


© Keith Vander Linden, 2005 1 Need to modify the ASP.Net slides to more coherently cover the ASP material in the text, chapters 6 & 8. Cover reasons to.

// Save this value for the database update. for (var i=0; i …some other stuff… …some other stuff… index.html © Keith Vander Linden, 2005 40 JavaScript Reference Material ● JavaScript data types (Netscape/Web.UI.WebControls.DataGridCommandEventArgs) _ Handles DataGrid1.EditCommand Edit the datagrid row in the click events item index. DataGrid1.EditItemIndex /DataGridCommandEventArgs) _ Handles DataGrid1.UpdateCommand Refill the dataset in sorted order so we can edit it. FillSortedDataSet() Loop through the /


Structured Programming Week 3 INFM 603. Muddiest Points Emergent behavior of the Web HTML class attribute The details of JavaScript … p.style1 { font-family:arial;

( expression ) { … } else if ( expression ) { … } else { … } 3: Iterative Control Structure (Loop) var n = 1; while (n <= 10) { document.writeln(n); n++; } for (var n = 1; n <= 10; n++) { document.writeln(n); } true false Do Something Condition Continue FYI: /whatever string the user enters Handling Events Events: –Actions that users perform while visiting a page Use event handlers to response eventsEvent handlers triggered by events –Examples of event handlers in Javascript onMouseover: the mouse moved /


JavaScript Development Introduction First Steps in JavaScript SoftUni Team Technical Trainers Software University

of elements on the page  Presentation styles (background, borders, colors…)  Text and font styles (size, color, family)  JavaScript defines dynamic behavior  Programming logic for interaction with the user  Handle user events DHTML = HTML + CSS + JavaScript JavaScript Dynamic Behavior in a Web Page 10  JavaScript is a scripting programming language  Developed by Netscape for dynamic Web content  Lightweight, but with limited capabilities  Can be used as object-oriented language  Embedded/


JavaScript Development Introduction First Steps in JavaScript Svetlin Nakov Technical Trainer Software University

of elements on the page  Presentation styles (background, borders, colors…)  Text and font styles (size, color, family)  JavaScript defines dynamic behavior  Programming logic for interaction with the user  Handle user events DHTML = HTML + CSS + JavaScript JavaScript Dynamic Behavior in a Web Page 10  JavaScript is a scripting programming language  Developed by Netscape for dynamic Web content  Lightweight, but with limited capabilities  Can be used as object-oriented language  Embedded/


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