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How to use pop() method
- 青灯夜游Original
- 2019-02-20 14:29:573904browse
javascript pop() method can be used to delete the last element in a JavaScript array and return the number of deleted elements.
javascript pop() method
Function:pop() method Used to remove and return the last element of an array.
Basic syntax:
arrayObject.pop()
Note: pop() method will change the length of the array.
Description: The pop() method will delete the last element of arrayObject, reduce the array length by 1, and return the value of the element it deletes. If the array is already empty, pop() does not modify the array and returns undefined.
Usage example of javascript pop() method
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
</head>
<body style="font-size:20px ;">
<script type="text/javascript">
var arr = new Array(3)
arr[0] = "PHP"
arr[1] = "Javascript"
arr[2] = "MySQL"
arr[3] = "Python"
document.write("原数组："+arr)
document.write("<br/><br/>")
document.write("删除的元素："+arr.pop())
document.write("<br/><br/>")
document.write("新数组："+arr)
</script>
</body>
</html>Rendering:
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