CODEWITHSUNDEEP
javascriptstring
Kathirvel Shanmugasundaram
Kathirvel Shanmugasundaram

Reputation: 153

get index value from string representing array jquery

given string is

var strg = "RoomItemsQuantity[items][1][itemId]"

I'm having the above string value.How can i get itemId from the string.

var index = strg.lastIndexOf("[");
var fnstrg = strg.substr(index+1);
var fnstrg = fnstrg.replace("]","");

I've done like this is there any easiest way to do this?

thanks,

Upvotes: 0

Views: 87

Answers (3)

RobG
RobG

Reputation: 147453

You can use a regular expression like:

('RoomItemsQuantity[items][1][itemId]'.match(/([^\[]+)\]$/) || [])[1] // itemId

You can also use lookahead or lookbehind but support may not be available.

Upvotes: 1

jony89
jony89

Reputation: 5367

If the above pattern is fixed, then you could use the following trick :

var myString = "RoomItemsQuantity[items][1][itemId]";
var myItemId = (myString+"[").split("][")[2]

Upvotes: 1

DontVoteMeDown
DontVoteMeDown

Reputation: 21465

This code...

var arr = "RoomItemsQuantity[items][1][itemId]".replace(/]/g, "").split("[")

Will result in an array like this:

["RoomItemsQuantity", "items", "1", "itemId"]

Then...

arr[arr.length - 1]

Will give you what you want.

Upvotes: 2

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