Javascript .replace() 不起作用
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Javascript .replace() not working
提问by Hoser
carList = cars.innerHTML;
alert(carList);
carList = carList.replace("<center>","").replace("</center>","").replace("<b>","").replace("</b>","");
alert(carList);
Why in the world is this happening? I've tried splitting this out into individual string.replace()'s and that gives the same result.
为什么会发生这种情况？我尝试将其拆分为单独的 string.replace() 并给出相同的结果。
回答by Karl-Johan Sj?gren
Using .replace()with a string will only fix the first occurrence which is what you are seeing. If you do it with a regular expression instead you can specify that it should be global (by specifying it with a gafterwards) and thus take all occurrences.
.replace()与字符串一起使用只会修复您所看到的第一次出现。如果您使用正则表达式执行此操作，则可以指定它应该是全局的（通过使用 after 指定它g），从而获取所有出现的次数。
carList = "<center>blabla</center> <b>some bold stuff</b> <b>some other bold stuff</b>";
alert(carList);
carList = carList.replace(/<center>/g,"").replace(/<\/center>/g,"").replace(/<b>/g,"").replace(/<\/b>/g,"");
alert(carList);
See this fiddlefor a working sample.
有关工作示例，请参阅此小提琴。
回答by r3mainer
You can use a regular expression to match all of these at the same time:
您可以使用正则表达式同时匹配所有这些：
carList = carList.replace(/<\/?(b|center)>/g,"");
The gflag at the end of the match string tells Javascript to replace all occurrences, not just the first one.
g匹配字符串末尾的标志告诉 Javascript 替换所有匹配项，而不仅仅是第一个。
