需要从两个符号之间删除空格

Question

Need to remove whitespace from between two colons. So the output of : test : would be :test: . I got it to detect everything between :: but now I need it to match only the whitespace. This is the regex that matches everything: (?<=\\:)(.*?)(?=\\:)

Answer 1

Try capturing colon and replace() :

/\s*(:)\s*/gi

Demo

 var str = `fbflb : vfkvbfkvb : otjtjb : hih igvjyfv ugukgu ugug ` var rgx = /\\s*(:)\\s*/gi; var res = str.replace(rgx, '$1'); console.log(res); 

Answer 2

Try this

": test :".replace(/: *(.*?) *:/g,":$1:")

 let a = ": test :".replace(/: *(.*?) *:/g,":$1:") console.log(a); 

If you wanna only remove spaces from string then use simply

": test :".replace(/ /g,'')

 let a = ": test :".replace(/ /g,'') console.log(a); 

Answer 3

Use Replace and capturing group

 let str = ': test :' let op = str.replace(/(:)\\s+(.*?)\\s+(:)/g, "$1$2$3") let op1 = str.replace(/:(.*?):/g,':$1:' ) console.log(op); console.log(op1) 

Answer 4

The following regex will remove all space characters from a string. \\s represents any "space" type of character including tabs. the 'g' flag will perform multiple matches.

let text = ': test :'
let textWithoutSpaces = text.replace(/\s/g, '');
// textWithoutSpaces === ':test:'

Answer 5

Use

 var s = " test : test : test"; console.log( s.replace(/:[^:]+:/g, function (m) { return m.replace(/\\s+/g, ''); }) ) 

Details

• /:[^:]+:/g - matches all substrings that start with : , then have 1+ chars other than : and then :
• m is the matched text found, it is passed to the callback method in replace method
• m.replace(/\\s+/g, '') removes all 1+ consecutive whitespace chars inside that match, and after this, the text is returned, and pasted back into the result.