我有一个像这样的字符串
This is great day, tomorrow is a better day, the day after is a better day, the day after the day after that is the greatest day
我基本上想在逗号处分割这个长字符串并插入一个新行，这样它就变成了
This is great day
tomorrow is a better day
the day after is a better day
the day after the day after that is the greatest day
我怎样才能做到这一点 ？
随着内置split https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/String/split and join https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/join methods
var formattedString = yourString.split(",").join("\n")
如果您希望换行符成为 HTML 换行符，那么
var formattedString = yourString.split(",").join("<br />")
这对我来说最有意义，因为您将其分成几行，然后用换行符将它们连接起来。
虽然我认为在大多数情况下速度不如可读性重要，但在这种情况下我很好奇，所以我写了一个快速的基准 http://jsperf.com/split-vs-replace-so.
看来（在铬中）使用str.split(",").join("\n")比str.replace(/,/g, '\n'); .
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