JavaScript - get array element fulfilling a condition

Question

I\'m learning JavaScript using W3C and I didn\'t find an answer to this question.

I\'m trying to make some manipulations on array elements which fulfill some conditi

Answer 1

You can use for ... in in JavaScript:

for (var key in array) {
    if (/* some condition */) {
        // ...
    }
}

As of JavaScript 1.6, you can use this, too:

for each (var element in array) {
    // ...
}

These are mainly meant to traverse object properties. You should consider to simply use your for-loop.

EDIT: You could use a JavaScript framework like jQuery to eliminate these cross-browser problems. Give it a try. Its $.each()-method does the job.