请注意，此方案在循环中使用正则表达式检测字符串尾部的字符是否空格，尽管使用正则表达式增加了一点性能负担，但它允许你根据浏览器定义空格字符列表，以保持简短和兼容性。

Although using a regex for this adds a bit of performance overhead, it lets you defer the list of whitespace characters to the browser for the sake of brevity and compatibility.

youdao

请注意，此方案在循环中使用正则表达式检测字符串尾部的字符是否空格，尽管使用正则表达式增加了一点性能负担，但它允许你根据浏览器定义空格字符列表，以保持简短和兼容性。

Although using a regex for this adds a bit of performance overhead, it lets you defer the list of whitespace characters to the browser for the sake of brevity and compatibility.

youdao