JavaScript Array splice() Method
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JavaScript Array splice() Method
The splice() method adds/removes items to/from an array, and returns the removed item(s).
Note: This method overwrites the original array.
splice() with startIndex Only
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
var myFruit = ["Mango", "Cherry", "Jackfruit", "Apple"];
myFruit.splice(2);
document.write("myFruit = " +myFruit);
</script>
</body>
</html>
Syntax
Array.splice(startIndex, deleteCount, item1, ..., itemX)
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| startIndex | Required | Specifies the position at which the element to be add/remove. A negative index can be used to specifies the position from reverse order i.e., from right to left. If omitted, the default value is '0'. |
| deleteCount | Optional | Specifies the number of items to be removed. If deleteCount is 0 or negative, no elements are removed. If omitted, the default value is the 'length of an array' - 'startIndex'. |
| item1, ..., itemX | Optional | Specifies the elements to add to the array, beginning at the start index. If you don't specify any elements, splice() will only remove elements from the array. |
splice() with deleteCount
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
var myFruit = ["Mango", "Cherry", "Jackfruit", "Apple"];
myFruit.splice(2, 1);
document.write("myFruit = " +myFruit);
</script>
</body>
</html>
Adding new Elements
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
var myFruit = ["Mango", "Cherry", "Jackfruit", "Apple"];
myFruit.splice(2, 2, "Banana", "blueberry");
document.write("myFruit = " +myFruit);
</script>
</body>
</html>
Replacing new Elements
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
var myFruit = ["Mango", "Cherry", "Jackfruit", "Apple"];
myFruit.splice(2, 0, "Banana", "blueberry");
document.write("myFruit = " +myFruit);
</script>
</body>
</html>
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