CODEWITHSUNDEEP
javascriptjqueryfunctionglobal-variables
Md Riad Hossain
Md Riad Hossain

Reputation: 291

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

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?

Upvotes: 1

Views: 2755

Answers (4)

Sohil Desai
Sohil Desai

Reputation: 2988

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.

Upvotes: 0

davidaam
davidaam

Reputation: 449

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/

Upvotes: 1

Kanishka Panamaldeniya
Kanishka Panamaldeniya

Reputation: 17576

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');
    }
});

Upvotes: 0

Manish Kumar
Manish Kumar

Reputation: 15497

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;
    }
});

Upvotes: 0

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