indexOf
Modified on Mon, 07 Aug 2023
Description
Get the index at which the first occurrence of value is found in array, else -1
Syntax
indexOf(array, value, fromIndex)
Parameters
| Input Parameter | Type | Description |
|---|---|---|
| array | Array | The array to inspect |
| value | any | The value to search for |
| fromIndex (optional) | number | The index to search from |
Return value
| Type |
|---|
| number |
Sample
| Example | Result | Description |
|---|---|---|
| indexOf([1, 10, 1, 10], 10) | 1 | Search for the value 10 |
| indexOf([1, 10, 1, 10], 10, 2) | 3 | Search for the value 10 from the index 2 |
| indexOf([1, 2, 3, 4], 10) | -1 | Return -1 if the search value is not found |
To view all the List functions, click here.
See Also
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