Split string JavaScript in a specific way

Question

Hi I want to split a string in a specific way in javascript, like if the string is C:/users/Me/AppData/elastic/elastic 1.6. I know I can split it using the split() method and use pop() and shift() to get first and last splitted string but I want to split it like, except the last string. So the answer should be like “C:/users/Me/AppData/elastic"

I did it like this,

str.split(str.split("/").pop()).shift()

I got the out put like this,

C:/users/Me/AppData/

But I want it like this,

C:/users/Me/AppData

more importantly, what have you done so far to solve your issue? — chazsolo
– chazsolo, Commented Oct 23, 2017 at 15:05
I want split strings in JavaScript except the last word separated by the "/". — user8427401
– user8427401, Commented Oct 23, 2017 at 15:06
@rayancarlon - that is a task definition... We are asking where you are having problems with that task... — Lix
– Lix, Commented Oct 23, 2017 at 15:07

llama · Accepted Answer · 2017-10-23 15:16:50Z

2

It sounds like you're saying that you want the final item in the path to be dropped. To do that, you can use .lastIndexOf() to get the last / position, and then .slice() up to that point if it wasn't -1.

var str = "C:/users/Me/AppData/elastic/elastic 1.6";

var idx = str.lastIndexOf("/");
var res = str;

if (idx !== -1) {
  res = str.slice(0, idx);
}

console.log(res);

Or like this, which is similar to your attempt, but may be slower:

var str = "C:/users/Me/AppData/elastic/elastic 1.6";

var res = str.split("/");
res.pop();
res = res.join("/");

console.log(res);

Your original solution does work as long as the last item doesn't appear anywhere else in the URL. Otherwise you'll get only the part before the first split item.

edited Oct 23, 2017 at 15:16

answered Oct 23, 2017 at 15:10

llama

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Comments

Killzone Kid · Accepted Answer · 2017-10-23 20:12:31Z

0

If you want regex:

var str = "C:/users/Me/AppData/elastic/elastic 1.6"; 
str = str.replace(/\/[^\/]*$/, "");

The expression reads:

Grab everything starting from / until the end of the string.
There should be no / in between.
Replace it with nothing

answered Oct 23, 2017 at 20:12

Killzone Kid

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