How to use the push () method in JavaScript
This article mainly introduces the relevant knowledge of "how to use the push() method in JavaScript". Xiaobian shows you the operation process through actual cases. The operation method is simple and fast and practical. I hope this article "how to use the push() method in JavaScript" can help you solve the problem.
The push() method is mainly used to add one or more elements to the end of the array, and its return value is the new length after addition, that is, the length of the array after push, which is of type number.
Push definition and usage
The push() method adds one or more elements to the end of an array and returns the new length.
syntax
arrayObject.push(newelement1,newelement2,...., newelementX)
parameter description
newelement1 is required. The first element to add to the array.
newelement2 is optional. The second element to add to the array.
newelementX is optional. Multiple elements can be added.
return value
The new length after adding the specified value to the array.
description
The push() method adds its argument order to the end of an arrayObject. It modifies arrayObject directly instead of creating a new array. The push() and pop() methods use the advanced post-pop functionality provided by arrays.
Tips and comments
Note: This method changes the length of the array.
Tip: To add one or more elements to the beginning of an array, use the unshift() method.
Examples of Push
In this example, we will create an array and change its length by adding an element:
vararr=newArray(3)
arr[0]="George"
arr[1]="John"
arr[2]="Thomas"
[xss_clean](arr+"")
[xss_clean](arr.push("James")+"")
[xss_clean](arr)
Output:
George,John,Thomas
4
Gorge,John,Thomas,James
TIY
push()
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