regex - How to add white space in regular expression in Javascript - Stack Overflow

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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.

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.

• javascript
• regex

Share Improve this question Follow edited Jun 24, 2014 at 7:01 Nitish Kumar asked Jun 24, 2014 at 6:59 Nitish KumarNitish Kumar 4,87033 gold badges2121 silver badges3838 bronze badges 4

• Where do you want to add the white space? – zx81 Commented Jun 24, 2014 at 7:04
• using your pattern.. /{{\w{1,}\ \w{1,}}}/gi – webkit Commented Jun 24, 2014 at 7:17
• \s - will match exact one space – Naresh Ravlani Commented Jun 24, 2014 at 7:27
• Hey there, following up on this, did one of the answers solve it for you, or is the question still there? – zx81 Commented Jun 25, 2014 at 21:14

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3 Answers 3

Sorted by: Reset to default 2

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.

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 pulsory character then use + instead of *.

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

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