missing ; after for-loop initializer

Question

var nodeWordsString = document.getElementById("nodeWordsTextArea").value.trim();
    var nodeWordsStringArray=nodeWordsString.split(" ");
    var strLength = nodeWordsStringArray.length;
    for(int i = 0; i < nodeWordsStringArray.length; i++)----->******
    {
        for(int j = 0; j < nodeWordsStringArray.length; j++)
        {
            if(nodeWordsStringArray(i) == nodeWordsStringArray(j))
            {
                alert("Node duplication occurred at:"+nodeWordsStringArray(i));
                return false;
                //break;
            }
        }
    }

**showing error like missing ; after for-loop initializer in java script console(firebug). please help me.

Brad Christie · Accepted Answer · 2011-04-19 14:34:59Z

123

This is javascript, but you're using int in your loop declaration? Try replacing those with var instead.

answered Apr 19, 2011 at 14:34

Brad Christie

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6 Comments

Brad Christie Over a year ago

@Raynos: Was going to ask you the same. ;-)

Brad Christie Over a year ago

@vissu pepala: Don't worry about it, everyone's here to help without passing judgement. I know I've had many-a-night coding and did a face-palm the next morning to some stupid error I couldn't see the night before. ;-)

simotek Over a year ago

Just made the same mistake :-) and found the soln straight away thanks to your question

Tomáš Zato Over a year ago

Same mistake here too. Force of habit is the stronger the deeper the night is.

Mike B Over a year ago

@Raynos - years have passed and people are making the same mistakes, lol :D [same here]

|

Limon Monte · Accepted Answer · 2018-06-05 11:48:25Z

14

In my case, the error was caused by using let in the loop. Old browsers like Firefox 38 doesn't support let.

Replacing let by var solved the issue.

answered Jun 5, 2018 at 11:48

Limon Monte

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1 Comment

JAX Over a year ago

I was having the same problem today in FF38 but the really irritating part is that the code works fine in the dev tools console, but not on my page. I tried adding [code]"use strict";[/code] but all that did was create a different error message without a line number.

lpd · Accepted Answer · 2016-04-12 16:47:05Z

5

If you are here in 2016, maybe you are trying to use a let declaration outside strict mode in a browser that does not yet support it. Replace it with var or add 'use strict;' to the top of your function.

answered Apr 12, 2016 at 16:47

lpd

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Comments

gen_Eric · Accepted Answer · 2011-04-19 14:35:15Z

4

Change int i and int j to var i and var j.

answered Apr 19, 2011 at 14:35

gen_Eric

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Comments

Raynos · Accepted Answer · 2011-04-19 14:36:39Z

1

var strLength = nodeWordsStringArray.length;
for(int i = 0; i < nodeWordsStringArray.length; i++)

You can use for (int i = 0; i < strLength; i++) it is more efficient. As for your actual error try moving your brackets to the end of your for line. for(..;..;..) {

P.S. as mentioned there is no int.

answered Apr 19, 2011 at 14:36

Raynos

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