The JavaScript Symbol.hasInstance is utilized to ascertain whether a constructor object identifies a particular object as an instance of itself.
Syntax
Example
[Symbol.hasInstance] (obj)
Parameters
An object as one of the constructor.
Return value
Return true if the specified value exists within the object's chain; otherwise, return false.
Browser Support
| Chrome | 5.1 |
|---|---|
| Safari | Yes |
| Firefox | 50 |
| Opera | Yes |
Example 1
Example
<script>
//JavaScript to illustrate Symbol.hasInstance
var pyVisualizer = [12,45];
document.write( Array[ Symbol.hasInstance ](pyVisualizer) );
//expected output:true
</script>
Output:
Example 2
Example
<script>
//JavaScript to illustrate Symbol.hasInstance
//Using user define function
function pyVisualizer()
{}
var Script = new PyVisualizer
document.write( pyVisualizer[ Symbol.hasInstance ](Script) );
//expected output:true
</script>
Output:
