Here is a simple and easily understandable snippet code, to remove duplicates from an existing array using JavaScript. You guys! might have come across in some situation where in which the array has got some duplicates and want to remove those duplicates to show up unique ones. Below simple JavaScript code does the same, initially the respective array has got some value like below:
1 | var sampleArr=new Array(1,1,1,1,1,2,2,3,3,3,4,4,4); |
And now your expecting output should be 1,2,3,4 right? yeah it does the same.
JavaScript Code:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | var sampleArr=new Array(1,1,1,1,1,2,2,3,3,3,4,4,4); //Declare array document.write(uniqueArr(sampleArr)); //Print the unique value //Adds new uniqueArr values to temp array function uniqueArr(a) { temp = new Array(); for(i=0;i<a.length;i++){ if(!contains(temp, a[i])){ temp.length+=1; temp[temp.length-1]=a[i]; } } return temp; } //Will check for the Uniqueness function contains(a, e) { for(j=0;j<a.length;j++)if(a[j]==e)return true; return false; } |
You can customize accordingly instead of ‘document.write’ you can copy unique values to other array and proceed accordingly.
Related Entries...
Introduction: This article will helps you in removing any duplicate values from Multi Dimensional A ...
Introduction: I would like to say this article going to help most of the developers who are in need ...
Hi Guys, I would like to share a JavaScript snippet code which will remove special characters (like ! ...
In the following article we can have a look at the ways of creating new files in Ruby programming lan ...
Introduction Recently, one of my reader came up with a query like "Why JavaScript is not running aft ...
I am back again with some helpful snippet code. Here using JavaScript we can pro actively sort date f ...
This article will help beginners, that is who are new to jQuery and want to learn some tricks about j ...
In some scenarios we will have catch hold of number of occurrences while coding, like for example: In ...
Do you want to know and detect visitor’s browser version using JavaScript, yeah here is the script th ...
After going through this article, you will get an idea on resolving browser compatibility issues whil ...
5 Responses
[...] which you would like to read: 1. Remove duplicates from an array using JavaScript 2. Check out the number of Occurrences using JavaScript 3. Adding a div, button to the body tag [...]
[...] If you want to same concept for one dimensional array that is simple array, then you can view this article for reference – Remove duplicates from an array using JavaScript [...]
thanks its a good code that work for me…
[...] to Developer Snippets for the code « jQuery SWFObject Plugin and [...]
var i,j,temp;
var arr=[8,33,29,2,68,3,75,68,46,2,29,1,78];
for(i=0;i<arr.length;i++)
{
for(j=i+1;j<arr.length;j++)
{
if(arr[i]==arr[j])
{
temp=arr.splice(j,1)
alert(temp);
document.writeln(temp);
}
}
}
document.writeln("array without duplicates");
document.writeln(arr);