CODEWITHSUNDEEP
javascriptregex
Bertrand Engogram
Bertrand Engogram

Reputation: 629

Regex for end of string

I can't find the magic formula to get my regex working in Javascript. let's say I have:

const branchnames = [
    { name:'WICO-29', key:1 },
    { name:'WICO-9', key:2 },
    { name:'wico-2', key:3 },
    { name:'wiCo-2: description', key:4 },
    { name:'WiCO-2 example ', key:5 },
    { name:'WiCO-2-dosomething', key:6 },
    { name:'wiCO-2, great', key:7 },
];

I would like to recover every names excepts for the first two. Hence I am looking for a regex looking for "wico-2" (not case sensitive), followed either by nothing or a non alphanumerical character. Following attempts didn't work...

const reg = new RegExp(/wico-2[ ,:-]?$/, "i"); // miss: 4,5,6,7
const reg = new RegExp(/wico-2\W/, "i"); // miss: 3
const reg = new RegExp(/wico-2\W?/, "i"); // wrong:1
const reg = new RegExp(/wico-2\W?$/, "i"); // only 3

branchnames.forEach( element => {
    console.log ( element.name.match(reg));
});

any help ? thanks !

Upvotes: 0

Views: 855

Answers (4)

brso05
brso05

Reputation: 13232

You could do this:

/wico-2(([ ,:-]+|$).*$)/

Here is a link to regex tester:Regex

enter image description here

Upvotes: 0

Shekhar Khairnar
Shekhar Khairnar

Reputation: 2691

You can use regex as /wico-2(?!\d)/gi

const branchnames = [
    { name:'WICO-29', key:1 },
    { name:'WICO-9', key:2 },
    { name:'wico-2', key:3 },
    { name:'wiCo-2: description', key:4 },
    { name:'WiCO-2 example ', key:5 },
    { name:'WiCO-2-dosomething', key:6 },
    { name:'wiCO-2, great', key:7 },
];
const reg = new RegExp(/wico-2(?!\d)/, "gi");

branchnames.forEach( element => {
  if(element.name.match(reg)){
     console.log (element);
  }
});

Upvotes: 1

Redu
Redu

Reputation: 26191

One might do as follows;

var branchnames = [
    { name:'WICO-29', key:1 },
    { name:'WICO-9', key:2 },
    { name:'wico-2hello', key:3 },
    { name:'wico-2', key:3 },
    { name:'wiCo-2: description', key:4 },
    { name:'WiCO-2 example ', key:5 },
    { name:'WiCO-2-dosomething', key:6 },
    { name:'wiCO-2, great', key:7 },
];
branchnames.forEach(bn => /wico-2(?=[^\dA-Za-z]|$)/i.test(bn.name) && console.log(bn.name));

Upvotes: 0

Thomas Ayoub
Thomas Ayoub

Reputation: 29451

I would use /wico-2(?:\D+|$)/ to do this:

const branchnames = [
    { name:'WICO-29', key:1 },
    { name:'WICO-9', key:2 },
    { name:'wico-2', key:3 },
    { name:'wiCo-2: description', key:4 },
    { name:'WiCO-2 example ', key:5 },
    { name:'WiCO-2-dosomething', key:6 },
    { name:'wiCO-2, great', key:7 },
];

const reg = new RegExp(/wico-2(?:\D+|$)/, "i"); 

branchnames.forEach( element => {
    console.log ( element.name.match(reg));
});

Explanation of (?:\D+|$):

  • Non-capturing group (?:\D+|$)
    • 1st Alternative \D+ : matches any character that's not a digit (equal to [^0-9])
    • + Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy)
    • 2nd Alternative $: asserts position at the end of the string

Upvotes: 1

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