jQuery/javascript delete suffix of variable

Question

I have a variable set to retrieve the id of a specific element which is "PubRecNum-1" (the number is also variable and will change depending on the record number). What I'm needing is a way to only take the first 3 letters of the variable "Pub" (needed for comparison purposes).

Any ideas?

Andy E · Accepted Answer · 2010-06-03 13:06:36Z

3

You can get those letters using substring() or slice():

var str = "PubRecNum-1";
alert(str.substring(0, 3)); // -> "Pub"
alert(str.slice(0, 3)); // -> "Pub"

answered Jun 3, 2010 at 13:06

Andy E

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1 Comment

Andy E Over a year ago

@sadmicrowave: yes, that would work fine. As a general rule I would stick to using slice or substring, substr isn't part of the ECMAScript standard and its implementation differs between browsers.

Karl Johan · Accepted Answer · 2010-06-03 13:06:39Z

2

Javascript's substring() or substr() is used for exactly this

answered Jun 3, 2010 at 13:06

Karl Johan

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1 Comment

Andy E Over a year ago

Note that the substr() is not part of the ECMAScript standard and its implementation varies between browsers. Although (0, 3) as arguments would work the same across implementations, I prefer to avoid substr() altogether.

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