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Every

methods

Executes a callback function for every single item in the array and returns true or false depending if all the items in the array pass the condition. An equivalent of Array.prototype.every.

every

Parameters:callbackFunction

The function that will be executed for every item.

Returns:Boolean

—Returns true if all items pass the test function condition. Otherwise, returns false.

<script>
  var arr = new kendo.data.ObservableArray([10, 15, 20, 25, 30]);

  var result = arr.every((item) => {return item > 20})
  var result2 = arr.every((item) => {return item < 40})
  /* The result can be observed in the DevTools(F12) console of the browser. */
  console.log(arr)
  console.log(result)
  console.log(result2)
</script>