use javascript to split this string "text[99][text]"

Question

I have some input text field in a form that have name with this format: sometext[234][sometext]

Something like <input type="text" name="user[2][city]" />

I need obtain 'user','2' and 'city' with split function.

Thank you

Check if this works stackoverflow.com/questions/1493407/…

Carlos Valenzuela
– Carlos Valenzuela

2011-02-23 18:30:44 +00:00
Commented Feb 23, 2011 at 18:30 — Carlos Valenzuela
– Carlos Valenzuela, Commented Feb 23, 2011 at 18:30

jAndy · Accepted Answer · 2011-02-23 18:38:08Z

5

I guess a regular expression fits better here.

var res = document.getElementsByTagName('input')[0].getAttribute('name').match(/^(\w+)?\[(\d+)?\]\[(\w+)?\]$/);

console.log(res[1]); // === "user"
console.log(res[2]); // === "2"
console.log(res[3]); // === "city"

edited Feb 23, 2011 at 18:38

answered Feb 23, 2011 at 18:32

jAndy

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2 Comments

Shaz Over a year ago

I'd rather see an id being added than guessing that there is only one input element. :P

jAndy Over a year ago

@Shaz: indeed. I just hope the OP already querys for the element somehow. This is just for demonstration.

broofa · Accepted Answer · 2011-02-23 18:32:49Z

3

>>> "user[2][city]".split(/[\[\]]+/)

Returns this array:

["user", "2", "city", ""]

answered Feb 23, 2011 at 18:32

broofa

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1 Comment

jAndy Over a year ago

problem with this is, if for some reason the first numeric value is empty, it would just split into ['user', 'city', ''].

Humberto · Accepted Answer · 2011-02-23 18:34:42Z

1

Have you used regexes? Try this sample (available in jsFiddle):

var re = /(.+?)\[(\d+)\]\[(.+?)\]/;
var result = re.exec("user[2][city]");
if (result != null)
{
    var firstString = result[1]; // will contain "user"
    var secondString = result[2]; // will contain "2"
    var thirdString = result[3]; // will contain "city"
    alert(firstString + "\n" + secondString + "\n" + thirdString);
}

answered Feb 23, 2011 at 18:34

Humberto

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