javascript - 这个 javascript 正则表达式有什么作用？

Question

这是什么意思？

name = name. replace(/([A-Z]) /g, " -$1" );

是js。

更正我的意思是 name = name.replace(/([A-Z])/g, "-$1");

Answer 1

意思是:

Take the string "name," and look for each uppercase letter followed by a space. When you find one occurrence, replace it with a hyphen, then the letter. Once you've done that for all occurrences, assign this new string back to the "name" variable.

例如，如果“name”在执行此行之前是AB CD，则在执行此行后“name”将是A-BCD。