Change a variable value inside a Jquery .filter() function

Question

I have a table which has id 'myTable'. Now there is a textbox in which I write down the item name to find whether it exists in the myTable cell or not. To do this I have written the following code -

var retval=0;   
var search = $("#searchitem").val().trim();
$("table#myTable tr td").filter(function() {
    if($(this).text() == search){retval=1;alert('Same item found');}
else{retval=0;}
});

The problem is that, when it finds the same item in the table cell it shows the alertbox. But the value of my variable retval never changes. It always shows 0. How can I solve it?

Probably in one iteration its making retval=1 and in the next resetting it back to 0, put an alert in else block and then debug. — Farhan
– Farhan, Commented Aug 24, 2013 at 7:09
use console.log instead of alerts. It's much easier to see what's happening than getting stupid boxes popping up everywhere. — RobH
– RobH, Commented Aug 24, 2013 at 7:17
What are you using retval for? I think there's probably a better solution to whatever problem you're facing than the one you're trying to use. — David Thomas
– David Thomas, Commented Aug 24, 2013 at 7:24

davidaam · Accepted Answer · 2013-08-24 08:05:18Z

1

I think what you are trying to accomplish could be done by using :contains() selector, like this:

var search = $("#searchitem").val().trim();
var retval = $("table#myTable tr td:contains('"+search+"'") ? 1 : 0;

I haven't tested it but I'm almost sure it works. It's a much more cleaner approach and surely more readable.

jQuery :contains() docs: http://api.jquery.com/contains-selector/

answered Aug 24, 2013 at 8:05

davidaam

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Comments

Manish Kumar · Accepted Answer · 2013-08-24 07:10:12Z

0

please try return false like this

var retval=0;   
var search = $("#searchitem").val().trim();
$("table#myTable tr td").filter(function() {
    if($(this).text() == search){
        retval=1;
        alert('Same item found');
        return false;
    }else{
        retval=0;
    }
});

answered Aug 24, 2013 at 7:10

Manish Kumar

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Comments

Kanishka Panamaldeniya · Accepted Answer · 2013-08-24 07:17:09Z

0

change the variable value only if found , because you assign the variable to 0 at the beginning.

var retval=0;   
var search = $("#searchitem").val().trim();
$("table#myTable tr td").filter(function() {
    if($(this).text() == search){
        retval=1;
        alert('Same item found');
    }
});

answered Aug 24, 2013 at 7:17

Kanishka Panamaldeniya

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Comments

Sohil Desai · Accepted Answer · 2013-08-24 09:05:06Z

0

Try this code

var search = $("#searchitem").val().trim();
var filteredData = $("table#myTable tr td").filter(function(element, index) 
{
    return $(element).text() == search;
});

now this code return array of TD elements which satisfy the condition.

answered Aug 24, 2013 at 9:05

Sohil Desai

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