How to use regular expressions to extract strings between fixed characters

This article mainly introduces how to use regular expressions to extract strings between fixed characters, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.

The sample code is as follows

/ / extract the string function getInnerString (source, prefix, postfix) {var regexp = new RegExp (encodeReg (prefix) +'. +'+ encodeReg (postfix), 'gi') between fixed characters; var matches = String (source) .match (regexp); var formatedMatches = _ .map (matches, value = > {return value. Replace (prefix,'). Replace (postfix,');}); return formatedMatches } / / escape the regular character function encodeReg (source) {return String (source) .replace (/ ([. * +? ^ =!: ${} () | [\] /\]) / gMagne'\ $1');}

Use:

Var a = 'Let's swing the sculls'; getInnerString (a, 'let's', 'let's'); / / 'sculls'] var b = 'boss and out of the office, please leave a message for Secretary Li'; getInnerString (b, 'leave a message for you',') / / [Secretary Li] Thank you for reading this article carefully. I hope the article "how to use regular expressions to extract strings between fixed characters" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support it. Pay attention to the industry information channel, more related knowledge waiting for you to learn!