javascript clean array

Question

I have four product gallery with the possibility to check the detail of each product from each gallery. Every time the user enter in the detail of any product an array is filled with all the products from that gallery. I should tell this is one single page.

I want to completely delete all the records in the array when the user exits the detail view, because when the user enter again in the detail view the array length increments his size.

I already tried arrayName.length =0; and arrayName.length = [] and it deleted the previous data, but his size continue incrementing like this:

1st time detail view is loaded --> arrayName{valA,valB,valC}

2nd time detail view is loaded --> arrayName{,,,val1,val2,val3}

what it's supposed to be in the 2nd time is: arrayName{val1,val2,val3}

Any idea in how I can solve this issue??

Thanks all

The solution

Thanks all guys. It was my problem.

while($rowDetails = mysql_fetch_array($rsDetails)){
?>
        <script language="javascript">
            arrayProd[pos] = <?php echo $rowDetails['RefArticleID']; ?>;
            pos++;
        </script>
   ...

The array is filled into a while cycle and it increments the pos. At the same time I re-initialize the array I force the pos to be 0 (zero)

arrayProd = [];
pos =0;

Thank you all

SoWeLie · Accepted Answer · 2012-01-24 00:29:33Z

11

This one is really simple, just re-initialize the array:

arrayName = [];

answered Jan 24, 2012 at 0:29

SoWeLie

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Comments

Mario J Vargas · Accepted Answer · 2012-01-24 00:45:31Z

3

Did you try re-initializing the array by setting it to an empty array?

arrayName = [];

edited Jan 24, 2012 at 0:45

answered Jan 24, 2012 at 0:31

Mario J Vargas

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1 Comment

RobG Over a year ago

That isn't 're-declaring' the array, it is assigning a new array object to the variable arrayName (i.e. initialising, per SoWeLie's answer). Declaring a variable a second time (i.e. var arrayName;) has no effect on its value.

RobG · Accepted Answer · 2012-01-24 00:53:14Z

3

I already tried arrayName.length =0;

That should work, except perhaps for browsers that don't comply with ECMA-262 ed 3 — which shoul be very, very few. In which browser does it fail for you?

and arrayName.length = []

Presumably you meant (otherwise you would see an error):

arrayName = [];

which should work without exception.

answered Jan 24, 2012 at 0:53

RobG

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