将Javascript UTF-8转换为ASCII(例如PHP中的Iconv('UTF-8'，'ASCII//TRANSLIT'，$ string))

我想知道如何使用Javascript将UTF-8中的字符转换"为最接近的ASCII等效字符，就像Iconv在PHP中一样.

I'm wondering how it's possible to 'translate' characters in UTF-8 to the closest ASCII equivalent using Javascript, just like Iconv doest in PHP.

示例:

ü变成u
ó变成o

ü becomes u
ó becomes o

我宁愿不使用替换，因为a)它需要一组完整的字符，这是很多工作，并且b)我将很难获得一组完整的字符，并且我会永远不确定我是否会错过一两个.

I'd rather not use a replace, because a) it requires a complete set of characters, which is a lot of work and b) i'd would be hard to get a complete set of characters, and i'll never be certain if i'm missing one or two.