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This article is about how JavaScript is referenced and implemented. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

JavaScript output

JavaScript is typically used to manipulate HTML elements.

To access a HTML element from JavaScript, you can use the document.getElementById (id) method.

Use the "id" attribute to identify the HTML element. Access the HTML element through the specified id and change its contents.

The JavaScript is executed by the web browser.

Example

My First Web PageMy First Paragraph

Document.getElementById ("demo") [xss_clean] = "My First JavaScript"

Tip: the browser accesses the HTML element of id= "demo" and replaces its content (innerHTML).

Write to document output

My First Web Page [xss_clean] ("

My First JavaScript

")

Tip: this example directly puts

The element is written to the HTML document output.

Warning

Please use [xss_clean] () to output only what is written to the document.

If you execute [xss_clean] after the document has finished loading, the entire HTML page will be overwritten:

My First Web Page

My First Paragraph.

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