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Removing an element from a given position of the array in Javascript
In this article, we are going to discuss removing an element from a given position of the array in JavaScript.
The delete operator, the slice() method, and the splice() method can be used to remove an element from a given position of the array in this article.
Following is the syntax of the delete operator.
let del = delete arr[index];
Following is the syntax of the slice() method.
arr.slice(start, end)
Following is the syntax of the splice() method.
arr.splice(position, no_of_elem)
Using delete Operator
Example
In this example, we are going to discuss the use of the delete operator. Here, we will use the delete operator to remove the element from a given position of the array, so that it will exclude the given indexed element of an array.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Remove an element using delete operator</title>
<div id="remove"></div>
</head>
<body>
<script>
let arr = [10, "Alice", 20, "Edward", 30, 40];
var remove = delete arr[3];
document.getElementById("remove").innerHTML =
"The array elements after using the delete operator is : " + arr;
</script>
</body>
</html>
Using slice() Method
Example
In this example, we are going to discuss the use of the slice() method. We will use the slice() method to remove the element from a given position of the array so that it will exclude the given indexed element of an array.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js"></script>
<title>Remove an element using slice() method</title>
<div id="original"></div>
<div id="slice"></div>
</head>
<body>
<script>
let arr = [10, "Alice", 20, "Edward", 30, 40];
let remove_elem_index = 4;
document.getElementById("original").innerHTML ="The array elements are : " + arr;
let sliceArr = [
...arr.slice(0, remove_elem_index),
...arr.slice(remove_elem_index + 1),
];
document.getElementById("slice").innerHTML ="The array elements after using the slice() method : " + sliceArr;
</script>
</body>
</html>
Using splice() Method
Example
In this example, we are going to discuss the use of the splice() method. We will use the splice() method to remove the element from a given position of the array so that it will exclude the given indexed element of an array.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Remove an element from an array using splice() method</title>
<div id="original"></div>
<div id="splice"></div>
</head>
<body>
<script>
let arr = [10, "Alice", 20, "Edward", 30, 40];
document.getElementById("original").innerHTML ="The array elements are : " + arr;
let del = arr.splice(4, 1);
document.getElementById("splice").innerHTML ="The array elements after using the splice() method : " + arr;
</script>
</body>
</html>
Using splice() Method
Example
JavaScript gives the splice method to remove from a given index. It can be used as follows −
let veggies = ["Onion", "Raddish", "Broccoli"]; veggies.splice(0, 1); // Removes 1 element from index 0 console.log(veggies);
Output
This will give the output −
["Raddish", "Broccoli"]
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