摘要： number = string*1;string = number+'';var str = '012.8372';var s = 0;str = str*1;alert(typeof(str));//numbers += '';alert(typeof(s));//stringvar boo = true;alert(typeof(boo));//booleanvar bs = Boolean(s);alert("bs:"+typeof(bs));alert("bsv:"+bs);//true 阅读全文