CODEWITHSUNDEEP
javascript
Mona Coder
Mona Coder

Reputation: 6316

How to remove strings before nth character in a text?

I have a dynamically generated text like this

xxxxxx-xxxx-xxxxx-xxxxx-Map-B-844-0

How can I remove everything before Map ...? I know there is a hard coded way to do this by using substring() but as I said these strings are dynamic and before Map .. can change so I need to do this dynamically by removing everything before 4th index of - character.

Upvotes: 1

Views: 896

Answers (4)

Mark
Mark

Reputation: 92440

I would just find the index of Map and use it to slice the string:

let str = "xxxxxx-xxxx-xxxxx-xxxxx-Map-B-844-0"
let ind = str.indexOf("Map")
console.log(str.slice(ind))

If you prefer a regex (or you may have occurrences of Map in the prefix) you man match exactly what you want with:

let str = "xxxxxx-xxxx-xxxxx-xxxxx-Map-B-844-0"
let arr = str.match(/^(?:.+?-){4}(.*)/)
console.log(arr[1])

Upvotes: 3

Sphinx
Sphinx

Reputation: 10729

Uses String.replace with regex expression should be the popular solution.

Based on the OP states: so I need to do this dynamically by removing everything before 4th index of - character.,

I think another solution is split('-') first, then join the strings after 4th -.

let test = 'xxxxxx-xxxx-xxxxx-xxxxx-Map-B-844-0'
console.log(test.split('-').slice(4).join('-'))

Upvotes: 0

Katherine R
Katherine R

Reputation: 1158

I would just split on the word Map and take the first index

var splitUp = 'xxxxxx-xxxx-xxxxx-xxxxx-Map-B-844-0'.split('Map') var firstPart = splitUp[0]

Upvotes: 0

Nina Scholz
Nina Scholz

Reputation: 386600

You could remove all four minuses and the characters between from start of the string.

var string = 'xxxxxx-xxxx-xxxxx-xxxxx-Map-B-844-0',
    stripped = string.replace(/^([^-]*-){4}/, '');
    
console.log(stripped);

Upvotes: 4

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