javascript String.prototype.replace() 删除破折号和下划线
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String.prototype.replace() to remove dashes and underscores
提问by Rodrigo Medeiros
I'm trying to remove all ocurrences of dashes and underscores of a string with String.prototype.replace(), but it's not working and I don't know why. My code:
我正在尝试使用 删除字符串的所有破折号和下划线String.prototype.replace()，但它不起作用，我不知道为什么。我的代码：
var str = "dash-and_underscore";
str = str.replace(/_|\-/, " ");
console.log(str);
outputs:
输出：
"dash and_underscore"
in the Chrome console.
在 Chrome 控制台中。
Since the |acts like the ORopperator, what am I doing wrong? I've tried the solution here, but it didn't work, or I'm too dumb to understand - which is an option ;)
既然|行为像OR经营者，我做错了什么？我在这里尝试了解决方案，但没有用，或者我太笨了无法理解 - 这是一个选项;)
回答by Casimir et Hippolyte
Try this:
试试这个：
str = str.replace(/[_-]/g, " ");
[..]defines a character classgmeans global research
[..]定义一个字符类g意味着全球研究
(You can write it with a quantifier /[_-]+/gto remove several consecutive characters at a time.)
（您可以使用量词编写它以一次/[_-]+/g删除多个连续字符。）
or
或者
str = str.replace(/_|-/g, " ");
that is correct too, but slower. Note that the dash doesn't need to be escaped out of a character class since it isn't a special character.
这也是正确的，但速度较慢。请注意，破折号不需要从字符类中转义出来，因为它不是特殊字符。
