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Get parent element in jQuery

We often need access of parent elements in the DOM while using jQuery functions.This can be achieved by using element.parent().

Let us take some example:

HTML Code:
<div id="div1">
        <span>This is span</span>
</div>

jQuery Code:
<script>
$($document).ready(function(){
    var par_id = ("span").parent().attr('id');
    alert(par_id);
});
</script>
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