字符串延续的空格替换成一个空格

字符串连续的空格替换成一个空格var str 迪兰恒进var tmp/\s+/gvalval.replace(tmp, )

字符串连续的空格替换成一个空格
var str = "迪兰    恒进"
var tmp=/\s+/g;  
val=val.replace(tmp," ");