HTML <script> tag
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HTML <script> tag
The <script> tag is used to add JavaScript code in an HTML document.
The <script> tag can be used to add either internal or external JavaScript code.
Internal JavaScript Code
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<button onclick="myFunction()">Click Me</button>
<script>
function myFunction(){
alert("I'm from Internal javascript file");
}
</script>
</body>
</html>
External JavaScript Code
The external JavaScript file file used in this example is alert-me.js.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<button onclick="myFunction()">Click Me</button>
<script src="/script/alert-me.js"></script>
</body>
</html>
Attributes
The following are the attributes of <script> tag. Also try Global attributes.
| Attribute | Value | Explanation |
|---|---|---|
| async | - | Specifies that external javascript will execute only after parsing the entire page. Order of execution is no guarantee. |
| defer | - | Specifies that external javascript will execute only after parsing the entire page. Order of execution is guarantee. |
| nomodule | - | Specifies the script will run only when browser do not support ES2015 modules. |
| nonce | - | Specifies the inline content of a script was not injected into the document by third party to cause malicious to the website, but written intentionally by the author who holds the rights to access the server of the website. |
| src | URL | Specifies the URL of the external javascript. |
| type | media_type | Specifies the media type of the script. |
Deprecated Attributes
The following attribute should not be used in any case.
| Attribute | Value | Explanation |
|---|---|---|
| charset | charset | Specifies the character encoding used in an external script file. |
| language | name | Specifies the scripting language in use. |
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