[英]How do I split this string using JavaScript?
I have this string 我有这个字符串
(<<b>>+<<10>>)*<<c>>-(<<x>>+<<y>>)
Using JavaScript, what is the fastest way to parse this into 使用JavaScript,解析它的最快方法是什么
[b, 10, c, x, y]
I'd suggest: 我建议:
"(<<b>>+<<10>>)*<<c>>-(<<x>>+<<y>>)".match(/[a-z0-9]+/g);
// ["b", "10", "c", "x", "y"]
References: 参考文献:
尝试这个:
'(<<b>>+<<10>>)*<<c>>-(<<x>>+<<y>>)'.match(/[^(<+>)*-]+/g)
use regex 使用正则表达式
var pattern=/[a-zA-Z0-9]+/g
your_string.match(pattern).
var str = '(<<b>>+<<10>>)*<<c>>-(<<x>>+<<y>>) ';
var arr = str.match(/<<(.*?)>>/g);
// arr will be ['<<b>>', '<<10>>', '<<c>>', '<<x>>', '<<y>>']
arr = arr.map(function (x) { return x.substring(2, x.length - 2); });
// arr will be ['b', '10', 'c', 'x', 'y']
Or you can also use exec
to get the capture groups directly: 或者您也可以使用
exec
直接获取捕获组:
var regex = /<<(.*?)>>/g;
var match;
while ((match = regex.exec(str))) {
console.log(match[1]);
}
This regular expression has the benefit that you can use anything in the string, including other alphanumerical characters, without having them matched automatically. 这个正则表达式的好处是,您可以使用字符串中的任何内容,包括其他字母数字字符,而不会自动匹配它们。 Only those tokens in
<< >>
are matched. 只有
<< >>
中的标记才匹配。
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