raychew13 · December 20, 2017 04:42
diff --git a/js_arrays_tips.js b/js_arrays_tips.js
 var array = [2, 5, 9, 10];
 var index = array.indexOf(9);
 if (index > -1) {
    array.splice(index, 1);  // delete from index 3 for 1 item.
 }
 console.log(array)
 // return     [ 2, 5, 10 ]
	var array = [2, 5, 9, 10];
	var index = array.indexOf(9);
	if (index > -1) {
	array.splice(index, 1); // delete from index 3 for 1 item.
	}
	console.log(array)
	// return [ 2, 5, 10 ]