How to Remove an Item from a JavaScript Array by its Value?

Removing Item from Array by Value

To remove an item from a JavaScript array by its value, you can utilize the splice() method in conjunction with the indexOf() method.

For instance, given an array ary = ['three', 'seven', 'eleven']:

var index = ary.indexOf('seven');
ary.splice(index, 1);

Here's how this works:

1. The indexOf() method searches for the first occurrence of the specified value ('seven' in this case) in the array. If found, it returns its position (index) in the array; otherwise, it returns -1.
2. If the index is not -1 (i.e., the value was found), the splice() method is used to remove the item from the array. The first parameter of splice() specifies the starting index (the position returned by indexOf()) and the second parameter specifies the number of elements to remove (in this case, 1).

By utilizing this technique, you can efficiently remove items from arrays by their values, allowing you to maintain and modify arrays as needed.

The above is the detailed content of How to Remove an Item from a JavaScript Array by its Value?. For more information, please follow other related articles on the PHP Chinese website!