changing forloop to while loop?in javascript

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1.00/5 (3 votes)

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I would like to change this forloop to a while statement:

var arr3=new Array();
var arr4=new Array();

for(i=0;i<arr3.length;i++){
if(arr3[i]!=undefined && indexarr[i]!=undefined){
arr4.push(arr3[i]);
indexarr1.push(indexarr[i]); } }

Posted 5-Mar-14 4:27am

medave

Updated 5-Mar-14 12:39pm

v3

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Sergey Alexandrovich Kryukov 5-Mar-14 10:33am

What do you mean "how"? By getting familiar with syntax and doing tiny programming work. Why, by the way?
—SA

2 solutions

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Peter Leow · Answer 1 · 2014-03-05T04:38:00

Solution 1

Learn to do it yourself: Comparing For and While[^]

Posted 5-Mar-14 4:38am

Peter Leow

Comments

Sergey Alexandrovich Kryukov 5-Mar-14 10:42am

Fair enough, 5ed.
—SA

Peter Leow 5-Mar-14 10:49am

Thanks Sergey.

Krunal Rohit · Answer 2 · 2014-03-05T16:16:00

Solution 2

JavaScript

var arr3=new Array();
var arr4=new Array();
var i = 0;
 
while(i<arr3.length)
{
    if(arr3[i]!=undefined && indexarr[i]!=undefined)
    {
        arr4.push(arr3[i]);
        indexarr1.push(indexarr[i]); 
    } 
 i++;
}

Is it so ??

-KR

Posted 5-Mar-14 16:16pm

Krunal Rohit

Updated 8-Mar-14 4:32am

v3

Comments

petra.elhashem 7-Mar-14 16:09pm

the i++ should be outside if as in for loop it was always incrementing regardless if the condition was true or false

Krunal Rohit 7-Mar-14 22:30pm

Yeah, My mistake..
Thanks

-KR