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Other References

CSSStyleDeclaration JS Conversion


JavaScript RegExp Groep [abc]


Voorbeeld

'n Globale soektog na die karakter "h" in 'n string:

let text = "Is this all there is?";
let pattern = /[h]/g;

Definisie en gebruik

Hakies [abc] spesifiseer passings vir die karakters binne die hakies.

Hakies kan enkele karakters, groepe of karakterreekse definieer:

[abc]Enige van die karakters a, b of c
[AZ]Enige karakter van hoofletter A tot hoofletter Z
[az]Enige karakter van kleinletter a tot kleinletter z
[Az]Enige karakter van hoofletter A tot kleinletter z

Blaaierondersteuning

/[abc]/ is 'n ECMAScript1 (ES1) kenmerk.

ES1 (JavaScript 1997) word ten volle ondersteun in alle blaaiers:

Chrome IE Edge Firefox Safari Opera
Yes Yes Yes Yes Yes Yes

Sintaksis

new RegExp("[abc]")

or simply:

/[abc]/

Sintaksis met wysigers

new RegExp("[abc]", "g")

or simply:

/[abc]/g


Wenk

Gebruik die [^abc] uitdrukking om enige karakter NIE tussen die hakies te vind nie.

Voorbeeld

Doen 'n globale soektog vir die karakters "i" en "s" in 'n string:

let text = "Do you know if this is all there is?";
let pattern = /[is]/gi;

Voorbeeld

'n Globale soektog na die karakterspan van kleinletters "a" tot kleinletters "h" in 'n string:

let text = "Is this all there is?";
let pattern = /[a-h]/g;

Voorbeeld

Doen 'n globale soektog vir die karakterspan van hoofletter "A" tot hoofletter "E":

let text = "I SCREAM FOR ICE CREAM!";
let pattern = /[A-E]/g;

Voorbeeld

'n Globale soektog vir die karakterspan van hoofletters "A" tot kleinletters "e" (sal vir alle hoofletters soek, maar slegs kleinletters van a tot e.)

let text = "I Scream For Ice Cream, is that OK?!";
let pattern = /[A-e]/g;

Voorbeeld

'n Wêreldwye, hoofletter-onsensitiewe soektog na die karakterspan [as]:

let text = "I Scream For Ice Cream, is that OK?!";
let pattern = /[a-s]/gi;

Voorbeeld

'n "g" en "gi" soektog vir karakters:

let text = "THIS This this";
let result1 = text.match(/[THIS]/g);
let result2 = text.match(/[THIS]/gi);

Soekmetodes vir gereelde uitdrukkings

In JavaScript kan 'n gewone uitdrukking tekssoektog met verskillende metodes gedoen word.

Met 'n patroon as 'n gereelde uitdrukking, is hierdie die mees algemene metodes:

VoorbeeldBeskrywing
text.match( patroon )Die String-metode pas()
text.search( patroon )Die String metode soek()
patroon .exec(teks)Die RexExp-metode exec()
patroon .toets(teks)Die RegExp metode toets()