HTML DOM hasAttribute () method
Examples
Check whether the button elements have onclick attribute:
document.getElementsByTagName("BUTTON")[0].hasAttribute("onclick");
Output:
true
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Definition and Usage
getAttribute () method to get the value of an attribute by name.
Browser Support
All major browsers support hasAttribute () method
Internet Explorer 8 and earlier versions of IE does not support this method.
grammar
element .hasAttribute( attributename )
parameter
| 参数 | 类型 | 描述 |
|---|---|---|
| attributename | String | 必须。你要检查的属性名。 |
return value
| 类型 | 描述 |
|---|---|
| Boolean | 如果元素有属性返回 true， 否则返回 false。 |
technical details
| DOM version | Core Level 2 Element Object |
|---|