JavaScript Array Trim

In the trim() method example, you will learn how to use the trim method in JavaScript. The JavaScript method trim() removes all empty elements from the JavaScript array whether they are in the beginning or in the end of the Array. In the given example, we have declared an instance of Array and added elements to it including empty elements. The method trim() removes all the empty elements and provides the simple Array.

Code for Array Trim in JavaScript


<html>

<head>

<script>

function trim(arr2){

var arr1=new Array();

for(j=0;j<arr2.length;j++)

if(arr2[j]!="")

arr1[arr1.length]=arr2[j];

arr2.length=arr1.length;

for(j=0;j<arr1.length;j++)

arr2[j]=arr1[j];

return arr2;

}

var arr2=new Array();

arr2[0]="";

arr2[1]="RoseIndia";

arr2[2="";

arr2[3]="";

arr2[4]="Technologies";

document.write("Trimmed array is: "+trim(arr2));

</script>

</head>

</html>

Output will be displayed as:

JavaScript Array Trim method output

Download Source Code

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Current Comments

1 comments so far (post your own) View All Comments Latest 10 Comments:

<% List videoFileTypes = display.getVideoExtnTypes(); %>

var videoFileTypes = new Array();
videoFileTypes='<%=videoFileTypes%>';
var v1=videoFileTypes.replace("[","");
var v2=v1.replace("]","");
var v4 = v2.replace(/\s+/g,''); //to trim the Array just use this expression.
var v3=v4.split(",");

Posted by Lavanya on Tuesday, 12.2.08 @ 00:48am | #82267

View This Comment Separately

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