JAVASCRIPT

javscript match method

//The match() method searches a string for a match against a regular expression, and returns the matches, as an Array object.

// ex : Search a string for "ain":

let text = "The rain in SPAIN stays mainly in the plain";
text.match(/ain/g);

// >> ain,ain,ain

//if you find this answer is useful ,
//upvote ⇑⇑ , so can the others benefit also . @mohammad alshraideh ( ͡~ ͜ʖ ͡°)

js regexp match

// 1. Match indices for numbered group
const matchObj = /(a+)(b+)/d.exec('aaaabb');

console.log(matchObj);
/*
Output -
['aaaabb', 'aaaa', 'bb', index: 0, input: 'aaaabb', groups: undefined, indices: Array(3)]
*/
// then
matchObj.indices[1];
/*
Output - 
[0, 4]
*/
// -------------------------

// 2. Match indices for named groups
const matchObj = /(?<as>a+)(?<bs>b+)/d.exec('aaaabb');

console.log(matchObj);
/*
Output - 
['aaaabb', 'aaaa', 'bb', index: 0, input: 'aaaabb', groups: {as: 'aaaa', bs: 'bb'}, indices: Array(3)]
*/
// then
matchObj.indices.groups;
/*
Output -
{ as: [0,4], bs: [4,6] }
*/

javascript match

cadena = "Para más información, vea Capítulo 3.4.5.1";
expresion = /(capítulo d+(.d)*)/i;
hallado = cadena.match(expresion);
console.log(hallado);

JavaScript String match()

let text = "The rain in SPAIN stays mainly in the plain";
text.match(/ain/g);

js regexp match

// ES2022
const matchObj = /(a+)(b+)/d.exec('aaaabb');

console.log(matchObj);
/*
Output -
['aaaabb', 'aaaa', 'bb', index: 0, input: 'aaaabb', groups: undefined, indices: Array(3)]
*/