replace double slash in javascript

Question

I'm working in a javascript function, in a given string I need to replace // for only one slash / by now I have:

result= mystring.replace("\/\/", "/");

bt it's not working, I still get the string with double slash, so which is the proper regex to indicate the double slash to the replace function?

I already tried:

!//!
////
///g///g

Edit: I'm using it to correct a URL that is saved in the string, for example, sometimes that URL can be something like: mywebpage/someparameter//someotherparameter and that double slash gives problem, so I need to replace it to one single slash like: mywebpage/someparameter/someotherparameter

You need to provide a minimal reproducible example: Show how you define mystring. Show how you test the value of result. — Quentin
– Quentin, Commented Dec 17, 2016 at 18:49
"which is the proper regex" — Why are you asking about regex when you are using a string and not a regex? — Quentin
– Quentin, Commented Dec 17, 2016 at 18:50
@SrednyMCasanova — Re edit: Don't just describe the strings, provide a minimal reproducible example — Quentin
– Quentin, Commented Dec 17, 2016 at 19:03

Pranav C Balan · Accepted Answer · 2016-12-17 19:04:57Z

23

Use regex /\/\//(or /\/{2}/) with a global modifier to replace all occurrence.

result= mystring.replace(/\/\//g, "/");

console.log(
  'hi// hello//123//'.replace(/\/\//g, '/')
)

edited Dec 17, 2016 at 19:04

answered Dec 17, 2016 at 18:51

Pranav C Balan

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2 Comments

Pranav C Balan Over a year ago

@SrednyMCasanova : glad to help :)

A.Casanova Over a year ago

Take into account that the regex is not a string. I mean, "/\/\//g" does not work

epascarello · Accepted Answer · 2016-12-17 19:15:11Z

6

There is no need to escape it if it is a string used as a replacement

console.log("asd//qwe".replace("//","/"));

If it were a regular expression, you would need to escape it

console.log("asd//qwe".replace(/\/\//,"/"));

Now if there is more than one set, than you need to use a regular expression with a global modifier.

console.log("asd//qwe".replace(/\/\//g,"/"));

edited Dec 17, 2016 at 19:15

answered Dec 17, 2016 at 18:51

epascarello

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