CODEWITHSUNDEEP
javascriptjquery
Ray
Ray

Reputation: 43

What does this regex do (/"([^"]+(?="))"/g, '$1')?

I'm debugging someone's code and wondering what this regex does?

Code: 

<script>

 var t = document.getElementById("filterVal").value;
 var s = filterVal.replace(/"([^"]+(?="))"/g, '$1')

</script>

Upvotes: 2

Views: 64

Answers (2)

Nina Scholz
Nina Scholz

Reputation: 386570

It removes a balanced count of double quotes.

console.log('a"bc"de"f'.replace(/"([^"]+)(?=")"/g, '$1'));
console.log('a"bc"d"e"f'.replace(/"([^"]+)(?=")"/g, '$1'));

// a version without a positive lookahead (looks like the same result)
console.log('a"bc"de"f'.replace(/"([^"]+)"/g, '$1'));
console.log('a"bc"d"e"f'.replace(/"([^"]+)"/g, '$1'));

Upvotes: 4

Flash
Flash

Reputation: 1014

As stated basically removes the qoutes: say filteVal = "It's sunny today"

 var t = document.getElementById("filterVal").value;
 var s = filterVal.replace(/"([^"]+(?="))"/g, '$1')
//output: It's sunny today

You can also try it out by just right clicking in chrome and opening inspect and typing it out in the console.

Upvotes: 1

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