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add variable inside regex in javascript

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Calm Cardinal answered on September 11, 2020 Popularity 10/10 Helpfulness 6/10

answer add variable inside regex in javascript

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add variable inside regex in javascript

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var pattern="cd"
var repeats=3
new RegExp(`${pattern}{${repeats}}`, "g")

Popularity 10/10 Helpfulness 6/10 Language javascript

Source: stackoverflow.com

Tags: add javascript regex

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Contributed on Dec 16 2020

Calm Cardinal

0 Answers Avg Quality 2/10

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js regex with variable

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function alphabet(str) {
  let alphabetStr = 'abcdefghijklmnopqrstuvwxyz';
  let strRegEx =`[${str[0]}-${str[3]}]`;  //set regex with variables
  let newRegEx = new RegExp(strRegEx, 'g'); //create new regex object
  //regex object pattern is: RegExp(pattern, modifiers)
  let charSetStr = alphabetStr.match(newRegEx);  
  return charSetStr;
}

console.log(alphabet('abce'));
//expected [ 'a', 'b', 'c', 'd', 'e' ]

Popularity 10/10 Helpfulness 6/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Aug 20 2021

Encouraging NeoBliz

0 Answers Avg Quality 2/10

javascript use variable regex

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// CREATE A REGEXP object
var replace = "regex";
var re = new RegExp(replace,"g");
//then use
"mystring".replace(re, "newstring")

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Sep 11 2020

GutoTrosla

0 Answers Avg Quality 2/10

add variable inside regex in javascript

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add variable inside regex in javascript

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