regular expression in jQuery selectors

Question

I have the following HTML:

<div class="questionItem">
<input data-val="true" data-val-number="The field MappingId must be a number." 
       data-val-required="The MappingId field is required." 
      id="answers_2__MappingId" name="answers[2].MappingId" type="hidden" value="23" />
<input id="answers_2__Item" name="answers[2].Item" type="hidden" value="B0300" />
<input id="answers_2__SetAnswer" name="answers[2].SetAnswer" type="hidden" value="^" />
</div>

jQuery will get me all the questionItems with this:

var coll = $('.questionItem');

I don't need all of them, I simply need the questionItems that have a child input with a name of answers[/d+].SetAnswer and value of ?.

How does one construct that has() clause?

This may help: http://stackoverflow.com/questions/3086554/find-all-elements-based-on-ids-using-regex-on-jquery-selector — nhahtdh, Jun 08 '12 at 16:04

score 2 · Answer 1 · answered Jun 08 '12 at 16:06

It should be something like this:

var coll = $(".questionItem").filter(function() {
    return $(this).find(":input").filter(function() {
        return /^answers\[\d+\]\.SetAnswer$/.test(this.name) && this.value == "?";
    }).length > 0;
});

DEMO: http://jsfiddle.net/nUNJd/

Sampson · Accepted Answer · 2012-06-08T17:13:24.427

1

Regular expressions aren't needed here. Just use :has and attribute selectors:

$(".questionItem:has(input[name$='.SetAnswer'][value='?'])");

Fiddle: http://jsfiddle.net/jonathansampson/S8kft/

edited Jun 08 '12 at 17:13

answered Jun 08 '12 at 16:14

Sampson

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Right on the mark! I love the jsfiddle.net site, that rock. Thanks you. – Sam Carleton Jun 08 '12 at 18:29

regular expression in jQuery selectors

2 Answers2