假设我们有一个包含一些大写英文字母的字符串,例如:const str = "Connecting to server Connection has been successful We found result";我们需要编写一个JavaScript函数,它接收这样一个字符串,并在字符串中每个大写字母之前的空格前插入一个逗号 ', '。代码如下:const str = "Connecting to server Connection has been successful We found result"; const capitaliseNew = str => { let newStr = ''; const regex = new RegExp(/.[A-Z]/g); newStr = str.replace(regex, ', $&'); return newStr; }; ... 阅读更多