Javascript 从字符串中删除连字符的最快方法 [js]
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fastest way to remove hyphens from a string [js]
提问by sova
I have IDs that look like: 185-51-671but they can also have letters at the end, 175-1-7b
我的 ID 看起来像：185-51-671但它们也可以在末尾有字母，175-1-7b
All I want to do is remove the hyphens, as a pre-processing step. Show me some cool ways to do this in javascript? I figure there are probably quite a few questions like this one, but I'm interested to see what optimizations people will come up with for "just hyphens"
我想要做的就是删除连字符，作为预处理步骤。告诉我一些很酷的方法来在 javascript 中做到这一点？我认为可能有很多这样的问题，但我很想知道人们会为“只是连字符”提出哪些优化
Thanks!
谢谢！
edit: I am using jQuery, so I guess .replace(a,b) does the trick (replacing a with b)
编辑：我正在使用 jQuery，所以我猜 .replace(a,b) 可以解决问题（用 b 替换 a）
numberNoHyphens = number.replace("-","");
any other alternatives?
还有其他选择吗？
edit #2:
编辑#2：
So, just in case anyone is wondering, the correct answer was
所以，以防万一有人想知道，正确的答案是
numberNoHyphens = number.replace(/-/g,"");
and you need the "g" which is the pattern switch or "global flag" because
并且您需要作为模式开关或“全局标志”的“g”，因为
numberNoHyphens = number.replace(/-/,"");
will only match and replace the first hyphen
只会匹配并替换第一个连字符
回答by James Hill
You need to include the global flag:
您需要包含全局标志：
var str="185-51-671";
var newStr = str.replace(/-/g, "");
回答by Cristian Sanchez
This is notfaster, but
这不是更快，而是
str.split('-').join('');
should also work.
也应该工作。
I set up a jsperf test if anyone wants to add and compare their methods, but it's unlikely anything will be faster than the replacemethod.
如果有人想添加和比较他们的方法，我会设置一个 jsperf 测试，但不太可能比该replace方法更快。
回答by Trey
var str='185-51-671';
str=str.replace(/-/g,'');
回答by Doug Chamberlain
Som of these answers, prior to edits, did not remove all of the hyphens. You would need to use .replaceAll("-","")
在编辑之前，其中一些答案并未删除所有连字符。你需要使用.replaceAll("-","")
