Multi tool use

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

HEllo Good - That is my - first world

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

.+?(?=-)

HEllo Good - That is my

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

HEllo Good - That is my

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

1 Answer
1

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]);

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