CODEWITHSUNDEEP
javascriptregex
Nitish Kumar
Nitish Kumar

Reputation: 4870

How to add white space in regular expression in Javascript

I have a string {{my name}} and i want to add white space in regular expression

var str = "{{my name}}";

var patt1 = /\{{\w{1,}\}}/gi; 

var result = str.match(patt1);

console.log(result);

But result in not match.

Any solution for this.

Upvotes: 1

Views: 20751

Answers (3)

Naresh Ravlani
Naresh Ravlani

Reputation: 1620

Try this on 

^\{\{[a-z]*\s[a-z]*\}\}$

Explanation:

  • \{ - Matches a literal { symbol.

  • \{ - Matches a literal { symbol.

  • [a-z]* - will match zero or more characters

  • \s - will match exact one space

  • \} - Matches a literal } symbol.

  • \} - Matches a literal } symbol.

If you want compulsory character then use + instead of *.

Upvotes: 1

Avinash Raj
Avinash Raj

Reputation: 174696

Give the word character\w and the space character\s inside character class[],

> var patt1 = /\{\{[\w\s]+\}\}/gi; 
undefined
> var result = str.match(patt1);
undefined
> console.log(result);
[ '{{my name}}' ]

The above regex is as same as /\{\{[\w\s]{1,}\}\}/gi

Explanation:

  • \{ - Matches a literal { symbol.

  • \{ - Matches a literal { symbol.

  • [\w\s]+ - word character and space character are given inside Character class. It matches one or more word or space character.

  • \} - Matches a literal } symbol.

  • \} - Matches a literal } symbol.

Upvotes: 2

zx81
zx81

Reputation: 41838

To match this pattern, use this simple regex:

{{[^}]+}}

The demo shows you what the pattern matches and doesn't match.

In JS:

match = subject.match(/{{[^}]+}}/);

To do a replacement around the pattern, use this:

result = subject.replace(/{{[^}]+}}/g, "Something$0Something_else");

Explanation

  • {{ matches your two opening braces
  • [^}]+ matches one or more chars that are not a closing brace
  • }} matches your two closing braces

Upvotes: 0

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