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How to use reverse function

不言Original: 2019-02-15 16:06:5915727browse

The reverse function in How to use reverse function is used to reverse the order of elements in an array. The first element of the array will become the last element, otherwise the last element will become the first element. Let's take a look at the reverse function. specific usage.

Let’s first take a look at the basic syntax of the reverse() function

arr.reverse（）

This function does not take any parameters.

Let’s look at the specific example of reverse function

The code is as follows

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title></title>
</head>
<body>
<script> 
  
function func() { 
  
    var arr = [34, 234, 567, 4]; 
    document.write(arr); 
  
    var new_arr = arr.reverse(); 
    document.write("<br>"); 
    document.write(new_arr); 
} 
func(); 
</script> 
</body>
</html>

The running result is as follows: the array elements are reversed.

34,234,567,4
4,567,234,34

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