2. getElementById() document.getElementById(“idName").innerHTML = “Any valid content"; getElementById is a method innerHTML is a property.

3. getElementsByClassName() var elements= document.getElementsByClassName(“className"); for(var i=0;i<elements.length;i++) { elements[i].innerHTML="test"; }

4. getElementsByTagName var z=document.getElementsByTagName("div"); for(var i=0;i<z.length;i++) { z[i].innerHTML=“Updated content“; }

5. How to change Style element.style.property=

6. How to change Style var z=document.getElementsByTagName("div"); for(var i=0;i<z.length;i++) { z[i].style.backgroundColor="red"; z[i].style.borderRadius="10px"; }

7. Change the attribute of an HTML element element.attribute= element.setAttribute(attribute,value)

8. Image src Attribute Change function changeI() { var x=document.getElementById("img1"); x.src=“src2"; }

9. DOM Nodes

10. Creating New HTML Elements This is a paragraph. This is another paragraph. var para = document.createElement("p"); var node = document.createTextNode("This is new."); para.appendChild(node); var element = document.getElementById("div1"); element.appendChild(para);

11. Creating new HTML Elements - insertBefore() This is a paragraph. This is another paragraph. var para = document.createElement("p"); var node = document.createTextNode("This is new."); para.appendChild(node); var element = document.getElementById("div1"); var child = document.getElementById("p1"); element.insertBefore(para,child);

12. Removing Existing HTML Elements This is a paragraph. This is another paragraph. var parent = document.getElementById("div1"); var child = document.getElementById("p1"); parent.removeChild(child);

13. Replacing HTML Elements This is a paragraph. This is another paragraph. var para = document.createElement("p"); var node = document.createTextNode("This is new."); para.appendChild(node); var parent = document.getElementById("div1"); var child = document.getElementById("p1"); parent.replaceChild(para,child);