How To Use Javascript To Change Html
How to get/change the HTML with DOM element in JavaScript ?
In guild to get/admission the HTML for a DOM chemical element in JavaScript, the get-go step is to identify the element base of operations on its id, name or its tag name. Then, we can use inner.HTML or outer.HTML to become the HTML.
1. Using getElementById() method: This method gets/identifies the DOM elements using it's ID and returns the element.
Case:
Javascript
<!DOCTYPE html>
<html>
<head>
<title>
How to get/change the HTML with
DOM element in JavaScript?
</championship>
</head>
<torso>
<h3>
Accessing HTML of a DOM
element in JavaScript.
</h3>
<p id= "iD1" >
JavaScript is used for web programming.
</p>
<button onclick=getHtml()>
Get and modify the html for DOM element
</push>
<script>
part getHtml() {
var Element = document.getElementById( "iD1" );
alert(Element.innerHTML);
Element.style.color = "orange" ;
Element.innerHTML = "GeeksforGeeks" ;
}
</script>
</body>
</html>
Output:
- Earlier Clickin the Button:
- After Clicking the Button:
2. Using getElementByName() method: This method gets/identifies the DOM element by using it'southward the course name and returns the element.
Example:
Javascript
<!DOCTYPE html>
<html>
<caput>
<championship>
How to go/change the HTML with
DOM element in JavaScript?
</title>
</caput>
<body>
<h3>
Accessing HTML of a DOM
element in JavaScript.
</h3>
<p course= "p1" >
JavaScript is used for web programming.
</p>
<push onclick=getHtml()>
Get and alter the html
for DOM element
</button>
<script>
function getHtml() {
var Element =
document.getElementsByClassName( "p1" );
alert(Element[0].innerHTML);
Chemical element[0].manner.color = "bluish" ;
Element[0].innerHTML = "GeeksforGeeks" ;
}
</script>
</torso>
</html>
Output:
- Before Clicking the Button:
- After Clicking the Button:
3. Using getElementsByTagName(): This method gets/identifies the DOM chemical element using it's tag proper name and returns it.
Example:
Javascript
<!DOCTYPE html>
<html>
<caput>
<title>
How to become/modify the HTML with
DOM element in JavaScript?
</title>
</head>
<body>
<h3>
Accessing HTML of a DOM
element in JavaScript.
</h3>
<p>JavaScript is used for web programming.</p>
<p>JavaScript was invented in 1990s.</p>
<button onclick=getHtml()>
Get and change the html for DOM element
</push>
<script>
function getHtml() {
var Chemical element = document.getElementsByTagName( "p" );
for ( var i = 0; i < Element.length; i++) {
alarm(Chemical element[i].innerHTML);
Element[i].innerHTML = "GeeksforGeeks." ;
}
}
</script>
</body>
</html>
Output:
- Before Clicking the button:
- After Clicking the Button:
NOTE: The above three approaches utilize inner.HTML property of the DOM element to get the HTML and alerts it and and so changes the HTML content present in the chemical element. The property inner.HTML is mainly used to change the text or rather the content present whereas outer.HTML is used for changing the tag and the content of the text equally information technology returns the HTML content along with its tag.
Below case illustrates the use of outer.HTML property using getElementsByTagName() method.
Javascript
<!DOCTYPE html>
<html>
<head>
<championship>
How to go/change the HTML with
DOM element in JavaScript?
</title>
</head>
<body>
<div> GeeksforGeeks </div>
<button onclick=getHtml()>
Get HTML for DOM element
</button>
<script>
office getHtml() {
var Element = document.getElementsByTagName( "div" );
alert(Element[0].outerHTML);
Element[0].style.color = "scarlet" ;
Element[0].outerHTML = "<h1> JavaScript. </h1>"
}
</script>
</body>
</html>
Output:
- Before Clicking the Button:
- Later on Clicking the Button:
The functions getElementById(), getElementsByClassName() tin also exist used to get the DOM elements for accessing outerHTML in the same manner as they were used to access innerHTML. Thus, we tin access HTML of a DOM using the higher up methods.
Source: https://www.geeksforgeeks.org/how-to-get-change-the-html-with-dom-element-in-javascript/
Posted by: russbrisiong.blogspot.com
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