search

Home >Web Front-end >JS Tutorial >js array method to loop through all elements in the array

js array method to loop through all elements in the array

PHPz
PHPzOriginal
2016-05-16 17:03:271214browse

The simplest way to traverse arrays in js is to use for and then use the length of arr.length as the maximum value of for. Let's take a look at some useful examples

Example: for (){} Traverse the array 

<script type="text/javascript">
 <!--
var arr = new Array(13.5,3,4,5,6);
for(var i=0;i<arr.length;i++){
 arr[i] = arr[i]/2.0;
}
alert(arr);
 //-->
 </script>

Example: for in loop traverse the array 

<html>
<body>
<script type="text/javascript">
var x
var mycars = new Array()
mycars[0] = "Saab"
mycars[1] = "Volvo"
mycars[2] = "BMW"
for (x in mycars)
{
document.write(mycars[x] + "<br />")
}
</script>
</body>
</html

The above is the entire content of this chapter. For more related tutorials, please visit the JavaScript video tutorial !

Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：jQuery - Detailed explanation of css() method example_jqueryNext article：jQuery - Detailed explanation of css() method example_jquery

Related articles

See more