[英]Javascript regex error, text between two characters
(?<=\[)[^\]]*(?=\])
which is matching text: 匹配文本:
[11/Sep/2016:21:58:55 +0000]
it works fine in sublime while testing, but when I do 在测试时,它在升华方面效果很好,但是当我这样做时
str.match(/(?<=\[)[^\]]*(?=\])/)
Ive got error: SyntaxError: Invalid regular expression Ive错误:SyntaxError:正则表达式无效
what Im doing wrong ? 我在做什么错?
You can use regex as : /[^\\[\\]]+/ 您可以将regex用作: / [^ \\ [\\]] + /
const regex = /[^\\[\\]]+/; const str = `[11/Sep/2016:21:58:55 +0000]`; let m; if ((m = regex.exec(str)) !== null) { // The result can be accessed through the `m`-variable. m.forEach((match, groupIndex) => { console.log(`Found match, group ${groupIndex}: ${match}`); }); }
You may use capturing and grab the Group 1 contents. 您可以使用捕获并获取第1组的内容。
If you have one value to extract, use 如果您要提取一个值,请使用
var m = "[11/Sep/2016:21:58:55 +0000]".match(/\\[([^\\]]*)]/); console.log(m ? m[1] : "No match");
If there are more, use RegExp#exec
with /\\[([^\\]]*)]/g
and collect the matches: 如果还有更多, RegExp#exec
与/\\[([^\\]]*)]/g
并收集匹配项:
var s = "[11/Sep/2016:21:58:55 +0000] [12/Oct/2016:20:58:55 +0001]"; var rx = /\\[([^\\]]*)]/g; var res = []; while ((m=rx.exec(s)) !== null) { res.push(m[1]); } console.log(res);
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