how to find '/' character using expression in javascript

Question

i want to get the index of all string '/jk' from the string 'ujj/jkiiiii/jk' using JavaScript and match function.I am able to find all string but when i am using / ,it is showing error.

Possible duplicate of Return positions of a regex match() in Javascript? — Aprillion
– Aprillion, Commented Jan 30, 2016 at 10:39
var string='ujj/jkiiiii/jk'; var regex = //jk/gi, result, indices = []; while ((result = regex.exec(string))) { indices.push(result.index); } — Ujjwal Kumar Gupta
– Ujjwal Kumar Gupta, Commented Jan 30, 2016 at 11:35

grabantot · Accepted Answer · 2016-01-30 10:36:34Z

6

If you want to get an array of positions of '/jk' in a string you can either use regular expressions:

var str = 'ujj/jkiiiii/jk'
var re = /\/jk/g
var indices = []
var found
while (found = re.exec(str)) {
    indices.push(found.index)
}

Here /\/jk/g is a regular expression that matches '/jk' (/ is escaped so it is \/). Learn regular expressions at http://regexr.com/.

Or you can use str.indexOf(), but you'll need a loop anyway:

var str = 'ujj/jkiiiii/jk'
var substr = '/jk'
var indices = []
var index = 0 - substr.length
while ((index = str.indexOf(substr, index + substr.length)) != -1) {
    indices.push(index)
}

The result in both cases will be [3, 11] in indices variable.

edited Jan 30, 2016 at 10:36

answered Jan 30, 2016 at 10:17

grabantot

2,14920 silver badges35 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

PRVS · Accepted Answer · 2016-01-30 10:28:46Z

-1

I update my answer.

you just need to add a '\' when you want to find a '/' because '\' is the escape character. As you don't give any clue of what you want to do. This is what I can help. If you update your answer with your code I can help a little more.

edited Jan 30, 2016 at 10:28

answered Jan 30, 2016 at 9:37

PRVS

1,7006 gold badges40 silver badges75 bronze badges

4 Comments

Ujjwal Kumar Gupta Over a year ago

It will return only the first index of 'jk' not all.

PRVS Over a year ago

Show an example without "/". So, I can see what you want. But try this: stackoverflow.com/questions/4664850/…

Ujjwal Kumar Gupta Over a year ago

You can check out example here- stackoverflow.com/questions/3410464/…. Here all the strings are working good,but what if the string contains '/' character then how to make regx.

PRVS Over a year ago

I update my answer. to be more general as you need(without code)

Collectives™ on Stack Overflow

how to find '/' character using expression in javascript

2 Answers 2

Comments

4 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

4 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related