How to check if jQuery .each() is not empty

Question

how to check if jQuery .each() function cant find something, then change txt value to 'default'.

$(this).closest('.filter-select__dropdown-inner').find('> .button--checkbox.button--active').each(function(i) {
    var val = $(this).val();

    if (i == 0) {
        txt = val;
    } else {
        txt = txt + ', ' + val;
    }
});

im already try

if (i == null) {
    txt = 'default';
}

but it doesnt work

@PutraFajarHasanuddin, it might be a contextual issue. If you're trying to find the size of the array _in which_ you are iterating, you'd be much better off using: ``$(this).closest('.filter-select__dropdown-inner').find('> .button--checkbox.button--active').length``. Using ``i`` in the context you described, would return the length of the first argument, for the array item you're currently iterating over. — XtraSimplicity, Jun 30 '16 at 12:13
Hold on, if it is empty set the text to 'default'? What text? — Taplar, Jun 30 '16 at 12:13
Well you can try something like this as well: **[JSFiddle](https://jsfiddle.net/RajeshDixit/ku9fgLwx/)** — Rajesh, Jun 30 '16 at 12:19

score 5 · Accepted Answer · edited Jun 30 '16 at 12:11

5

Use .length in jquery to get the length

var lnt = $(this).closest('.filter-select__dropdown-inner').find('> .button--checkbox.button--active');
if(lnt.length > 0) {

lnt.each(function(i) {
    var val = $(this).val();

    if (i == 0) {
        txt = val;
    } else {
        txt = txt + ', ' + val;
    }
});

}

edited Jun 30 '16 at 12:11

rafaelcastrocouto

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answered Jun 30 '16 at 12:09

Jayesh Chitroda

4,987
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1

I edited the answer to make use of the variable to increase efficiency. – rafaelcastrocouto Jun 30 '16 at 12:12

score 1 · Answer 2 · answered Jun 30 '16 at 12:09

1

make use of .length and check its empty or not.

var objcollection = $(this).closest('.filter-select__dropdown-inner').
         find('> .button--checkbox.button--active');

if(objcollection.length==0)
{
}
else
{
}

answered Jun 30 '16 at 12:09

Pranay Rana

175,020
35
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How to check if jQuery .each() is not empty

2 Answers2