Introduction:
I would like to say this article going to help most of the developers who are in need to remove duplicates which are present in Original array by comparing with the other array elements. If you could not understand what I am saying, look at the below example you will get an idea on how we can play with JavaScript built-in functions.
Actual Task:
My actual task is, I have two arrays one naming Array1 and other naming Array2. In Array1 I have elements like “a”,”b”,”c”,”d”,”e”,”f” and in Array2 I have elements like “c”,”e” only. Now, I want to remove elements “c” and “e” from Array1 (by comparing Array2), hope you have understood now whats going to be the output yeah! the output should be Output: “a”,”b”,”d”,”f”. This can be achieved using concat and slice functions. Want, to know how we can achieve this, see below for respective code snippets:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | <script language="javascript"> var Array1 = new Array("a","b","c","d","e","f"); var Array2 = new Array("c","e"); for (var i = 0; i<Array2.length; i++) { var arrlen = Array1.length; for (var j = 0; j<arrlen; j++) { if (Array2[i] == Array1[j]) { Array1 = Array1.slice(0, j).concat(Array1.slice(j+1, arrlen)); }//if close }//for close }//for close alert(Array1); </script> |
Hope this might help some of the developers who are looking for the same logic. Please, let me know if you have any suggestions in making it more compatible enough by reducing lines of code.
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7 Responses
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Nice snippet, Vivek! I know this is useful because Vivek utilized this concept on our team’s recent web application project.
Keep up the good work!
Hi Daniel,
Nice to see your comment here, thank you verymuch!
Thanks,
Vivek
woah! thanx a lot dude! it really helps!
Hi Joe,
Thanks a lot for your valuable comments, it really helps me in posting some new articles like this, which going to help everyone in all aspects. cheers… keep tunning into this site, its really going to help you a lot….
Thanks,
Vivek
Realy valuable code snipptes and smart too. Thanks for sharing.
hi there
and if there is an element in Array2 that is not present in array1??
how can i output ALSO array2 with the elements that dont match??
thx