JavaScript RegEx Match Failing

Question

I am having issues matching a string using regex in javascript. I am trying to get everything up to the word "at". I am using the following and while it doesn't return any errors, it also doesn't do anything either.

var str = "Team A at Team B";
var matches = str.match(/(.*?)(?=at|$)/);

I tried multiple regex patterns before coming across this SO post, Regex to capture everything before first optional string, but it doesn't to return what I want.

Andreas Wong · Accepted Answer · 2012-08-16 01:36:15Z

1

Remove the ? at your first capturing group, and |$ from your second, and add ^ to mark beginning of string:

str.match(/^(.*)(?=at)/)

Alternatively (I personally find below easier to read, but your call):

str.substr(0, str.search(/\bat\b/))

answered Aug 16, 2012 at 1:36

Andreas Wong

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