Searching array of objects using jquery grep with wildcards

Question

I'm searching an array of objects using jquery grep and would like to include wildcards in the search. For example, I have an array as follows:

courses = [
{code: 'ENCH3TH', otherFields: otherStuff},
{code: 'ENCH3THHS1', otherFields: otherStuff},
{code: 'ENCH3TH2', otherFields: otherStuff},
{code: 'ENCH4RT', otherFields: otherStuff},
{code: 'ENCH4MT', otherFields: otherStuff}]

I'd like to get all the courses with the ENCH3TH prefix. I have attempted

var resultSet = $.grep(courses, function(e){ return e.code == 'ENCH3TH/'; });

..to no avail (note the use of the '/' after 'ENCH3TH' as the wildcard).

In what language is / a wildcard?

Barmar
– Barmar

2013-09-12 07:34:31 +00:00
Commented Sep 12, 2013 at 7:34 — Barmar
– Barmar, Commented Sep 12, 2013 at 7:34

Arun P Johny · Accepted Answer · 2013-09-12 07:26:43Z

4

You can use String.indexOf() here, = will not work with wild chars

var resultSet = $.grep(courses, function (e) {
    return e.code.indexOf('ENCH3TH') == 0;
});

Demo: Fiddle

Or use regex

var regex = /^ENCH3TH/
var resultSet = $.grep(courses, function (e) {
    return regex.test(e.code);
});

Demo: Fiddle

edited Sep 12, 2013 at 7:26

answered Sep 12, 2013 at 7:21

Arun P Johny

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