HTML DOM getElementById()Method
Document ObjectExamples
Returns the element with the specified ID:
document.getElementById("demo");
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Definition and Usage
The getElementById() method returns a reference to the first object with the specified ID.
The HTML DOM defines several methods for finding elements. Besides getElementById(), there are also getElementsByName() and getElementsByTagName().
If there is no element with the specified ID, returnnull
If multiple elements with the specified ID exist, the first one is returned.
If you need to find elements without an ID, you can consider using CSS selectorsquerySelector()。
Browser Support
All major browsers support the getElementById() method
Syntax
document.getElementById(elementID)
Parameters
| Parameters | Type | Description |
|---|---|---|
| elementID | String | Required. The element's ID attribute value. |
Return Value
| Type | Description |
|---|---|
| Element object | The element with the specified ID |
Technical Details
| DOM Version | Core Level 2 Document Object |
|---|
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