JavaScript
JavaScript
JavaScript is the Programming Language for the Web. JavaScript can update and change both HTML and CSS. JavaScript can calculate, manipulate and validate data
JavaScript is a dynamic computer programming language. It is lightweight and most commonly used as a part of web pages, whose implementations allow client-side script to interact with the user and make dynamic pages. It is an interpreted programming language with object-oriented capabilities.
JavaScript is a very powerful client-side scripting language. JavaScript is used mainly for enhancing the interaction of a user with the webpage.
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 example":
The <script> Tag
In HTML, JavaScript code must be inserted between <script>
and </script>
tags.
document.getElementById("demo").innerHTML = "My First JavaScript";
</script>
Note: Old JavaScript examples may use a type attribute: <script type="text/javascript">.
The type attribute is not required. JavaScript is the default scripting language in HTML.