1 number = string*1;
 2 
 3 string = number+'';
 4 
 5 var str = '012.8372';
 6 var s = 0;
 7 str = str*1;
 8 alert(typeof(str)); //number
 9 s += '';
10 alert(typeof(s)); //string
11 var boo = true;
12 alert(typeof(boo)); //boolean
13 var bs = Boolean(s);
14 alert("bs:"+typeof(bs));
15 alert("bsv:"+bs); //true