getting number only from 10.0 or 2

Question

I am trying to figure out how to go about detecting what browser is being used. Some report the version as being 10.0, 10, 4.6 or 5. How can i just get the whole number without any .x at the end (if it has one to begin with)?

I currently use this:

version = version.substring(0,3);

Which works if its a whole number but not if it has a period in them.

David

duplicated question : http://stackoverflow.com/a/596503/889678 — mgraph, Mar 23 '12 at 14:35
Please don't do version detection, if you must serve different scripts for different browser, use [object detection](http://www.quirksmode.org/js/support.html) — Lie Ryan, Mar 23 '12 at 14:39

score 5 · Answer 1 · answered Mar 23 '12 at 14:33

5

What about something like...

var index = version.indexOf(".");
if(index != -1){
   version = version.substring(0, index);
}

Here is a working example

answered Mar 23 '12 at 14:33

musefan

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score 4 · Answer 2 · answered Mar 23 '12 at 14:33

4

convert it to a integer

versionInteger = parseInt(version, 10)

answered Mar 23 '12 at 14:33

silly

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score 3 · Answer 3 · answered Mar 23 '12 at 14:34

3

You can use parseInt() with a radix of 10 to convert it to just the whole number part.

parseInt(10.5, 10);

jsFiddle demo

answered Mar 23 '12 at 14:34

Anthony Grist

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score 1 · Answer 4 · answered Mar 23 '12 at 14:38

1

version = version.split('.')[0];

answered Mar 23 '12 at 14:38

Engineer

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getting number only from 10.0 or 2

4 Answers4