CODEWITHSUNDEEP
javascriptregex
olo
olo

Reputation: 5271

Select first dash only with regex in JavaScript

How to select the first dash - only and before the space?

HEllo Good - That is my - first world

The regex I wrote .+?(?=-) selected HEllo Good - That is my.

If I have only the string HEllo Good - That is my, it looks ok, but with the space.

var string = 'HEllo Good - That is my - first world';
console.log(string.match(/.+?(?=-)/gm));

Upvotes: 0

Views: 270

Answers (1)

user7637745
user7637745

Reputation: 975

If you need the first dash only, just match the string using the beginning of input ^:

const text = 'HEllo Good - That is my - first world';
const pattern = /^.*?\s(-)/;
const match = text.match(pattern);

console.log(`full match: ${match[0]}`);
console.log(`dash only: ${match[1]}`)

If you need what's before, including/excluding the first dash:

const text = 'HEllo Good - That is my - first world';
const patternIncludeDash = /(^.*?\s-)/;
const patternExcludeDash = /(^.*?\s)-/;

console.log('before the dash, but include dash: ' + text.match(patternIncludeDash)[1]);
console.log('before the dash, but exclude dash: ' + text.match(patternExcludeDash)[1]);

Upvotes: 2

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