No products in the cart.

JavaScript Introduction

JavaScript Tutorial

JavaScript Introduction

JavaScript Can Change HTML Content

One of many JavaScript HTML methods is getElementById().

This example uses the method to “find” an HTML element (with id=”demo”) and changes the element content (innerHTML) to “Hello JavaScript”:

document.getElementById("demo").innerHTML = "Hello JavaScript";

JavaScript Can Change HTML Attribute Values

In this example JavaScript changes the value of the src (source) attribute of an <img> tag:

JavaScript Can Change HTML Styles (CSS)

Changing the style of an HTML element, is a variant of changing an HTML attribute:

document.getElementById("demo").style.fontSize = "35px";
or
document.getElementById('demo').style.fontSize = '35px';

JavaScript Can Hide HTML Elements

Hiding HTML elements can be done by changing the display style:

document.getElementById("demo").style.display = "none";
or
document.getElementById('demo').style.display = 'none';

Leave a Reply

Your email address will not be published. Required fields are marked *

Reign Theme

Reign Theme

Reign Theme