根据多个分隔符拆分字符串

Question

I was trying to split a string based on multiple delimiters by referring How split a string in jquery with multiple strings as separator

Since multiple delimiters I decided to follow

var separators = [' ', '+', '-', '(', ')', '*', '/', ':', '?'];
var tokens = x.split(new RegExp(separators.join('|'), 'g'));​​​​​​​​​​​​​​​​​

But I'm getting error

Uncaught SyntaxError: Invalid regular expression: / |+|-|(|)|*|/|:|?/: Nothing to repeat 

How to solve it?

Answer 1

escape needed for regex related characters +,-,(,),*,?

var x = "adfds+fsdf-sdf";

var separators = [' ', '\\\+', '-', '\\\(', '\\\)', '\\*', '/', ':', '\\\?'];
console.log(separators.join('|'));
var tokens = x.split(new RegExp(separators.join('|'), 'g'));
console.log(tokens);

http://jsfiddle.net/cpdjZ/

Answer 2

This should work:

var separators = [' ', '+', '(', ')', '*', '\\/', ':', '?', '-'];
var tokens = x.split(new RegExp('[' + separators.join('') + ']', 'g'));​​​​​​​​​​​​​​​​​

Generated regex will be using regex character class: /[ +()*\\/:?-]/g

This way you don't need to escape anything.

Answer 3

The following would be an easier way of accomplishing the same thing.

var tokens = x.split(new RegExp('[-+()*/:? ]', 'g'));​​​​​​​​​​​​​​​​​

Note that - must come first (or be escaped), otherwise it will think it is the range operator (eg az )

Answer 4

我认为您需要转义 +、* 和 ?，因为它们在大多数正则表达式语言中具有特殊含义

Answer 5

This is because characters like + and * have special meaning in Regex.

Change your join from |to |\\ and you should be fine, escaping the literals.

Answer 6

If you want to split based in multiple regexes and dont want to write a big regex You could use replace and split . Like this:

 const spliters = [ /(\\[products\\])/g, /(\\[link\\])/g, /(\\[llinks\\])/g, ]; let newString = "aa [products] bb [link] [products] cc [llinks] dd"; spliters.forEach(regex => { newString = newString.replace(regex, match => `æææ${match}æææ`); }); const mySplit = newString.split(/æææ([^æ]+)æææ/) console.log(mySplit);

This works very well for my case.