javascript怎么将带有科学计数法的大数转换成普通数？在线急等，马上给分采纳

Question

javascript怎么将带有科学计数法的大数转换成普通数？比如1.23E12怎么转换成1230000000000

Answer 1

var num = 1.23E12；
parseFloat(num.toString(), 10);

Answer 2

function toNum (num) {
var temp = num.toUpperCase().split('E')

var mul = 1;
for (var i=0; i<temp[1]-0; i++) {
mul = mul *10;
}
return temp[0] * mul
}