indexOf
Returns the index in the Array at which the item can be found. An equivalent of Array.prototype.indexOf.
Parameters
item String|Number|Object
The searched item.
Returns
Number—The index of the specified data item. Returns -1 if the data item is not found.
Example - working with indexOf method
<script>
var array = new kendo.data.ObservableArray(["Apple", "Orange", "Berries", "Melon", "Grape", "Pear"])
var result = array.indexOf("Grape");
/* The result can be observed in the DevTools(F12) console of the browser. */
console.log(result); // outputs "4"
</script>In this article