javascript 匹配行尾javascript正则表达式
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match end of line javascript regex
提问by dr jerry
I'm probably doing something very stupid but I can't get following regexp to work in Javascript:
我可能正在做一些非常愚蠢的事情，但我无法在 Javascript 中使用以下正则表达式：
pathCode.replace(new RegExp("\/\/.*$","g"), "");
I want to remove // plus all after the 2 slashes.
我想删除 // 加上 2 个斜线之后的所有内容。
回答by Vivin Paliath
Seems to work for me:
似乎对我有用：
var str = "something //here is something more";
console.log(str.replace(new RegExp("\/\/.*$","g"), ""));
// console.log(str.replace(/\/\/.*$/g, "")); will also work
Also note that the regular-expression literal /\/\/.*$/gis equivalent to the regular-expression generated by your use of the RegExpobject. In this case, using the literal is less verbose and might be preferable.
另请注意，正则表达式文字/\/\/.*$/g等效于您使用RegExp对象生成的正则表达式。在这种情况下，使用文字不那么冗长，可能更可取。
Are you reassigning the return value of replaceinto pathCode?
您是否正在重新分配replaceinto的返回值pathCode？
pathCode = pathCode.replace(new RegExp("\/\/.*$","g"), "");
replacedoesn't modify the string object that it works on. Instead, it returns a value.
replace不会修改它处理的字符串对象。相反，它返回一个值。
回答by Harmen
This works fine for me:
这对我来说很好用：
var str = "abc//test";
str = str.replace(/\/\/.*$/g, '');
alert( str ); // alerts abc
回答by Steve Claridge
a = a.replace(/\/\/.*$/, "");
