How to create a JavaScript For Each Loop [duplicate]

Question

Okay, take it easy on me. I am really new to JavaScript and having issues getting the for-each loop to work correctly. Any Tips?

var array = ["Bob", "Nancy", "Jessie", "Frank"];
var arrayLength = myStringArray.length;

for (var i = 0; i < arrayLength; i++) {
    document.write(array);
}

document.write(myArray[element]);

juvian
– juvian

2014-06-10 19:04:24 +00:00
Commented Jun 10, 2014 at 19:04 — juvian
– juvian, Commented Jun 10, 2014 at 19:04
^ noooooooooooo (document.write())

Sterling Archer
– Sterling Archer

2014-06-10 19:04:47 +00:00
Commented Jun 10, 2014 at 19:04 — Sterling Archer
– Sterling Archer, Commented Jun 10, 2014 at 19:04
stackoverflow.com/questions/242841/javascript-for-in-vs-for

Srinath Mandava
– Srinath Mandava

2014-06-10 19:06:40 +00:00
Commented Jun 10, 2014 at 19:06 — Srinath Mandava
– Srinath Mandava, Commented Jun 10, 2014 at 19:06
and even this stackoverflow.com/questions/500504/…

Srinath Mandava
– Srinath Mandava

2014-06-10 19:08:00 +00:00
Commented Jun 10, 2014 at 19:08 — Srinath Mandava
– Srinath Mandava, Commented Jun 10, 2014 at 19:08

Michel Michels · Accepted Answer · 2014-06-10 19:15:14Z

6

var myArray = ["Bob", "Nancy", "Jessie", "Frank"];
var arrayLength = myStringArray.length;

for (var i = 0; i < arrayLength; i++) {
    //Do something with element myArray[i]
}

I guess you need something like this.

Edit: Your array has only 4 elements. In the 2nd line I save the length of your array (4 elements --> length is 4) in the variable 'arrayLength'. Then I wrote a simple for-loop which cycles the 'i' from 0 till 3 so you can access your elements from your array as 'myArray[i]'.

edited Jun 10, 2014 at 19:15

answered Jun 10, 2014 at 19:06

Michel Michels

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1 Comment

Sterling Archer Over a year ago

Please explain your answers. While this is sort of right (I don't condone document.write() advocation), the OP may have no idea what the difference is

TGH · Accepted Answer · 2014-06-10 19:06:04Z

2

The for in is used to iterate over properties on the object. It is not the same as a regular foreach. Use a for loop for this

answered Jun 10, 2014 at 19:06

TGH

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