摘要:
代码: 1 <!DOCTYPE html> 2 <html> 3 <head> 4 <title>查询详情</title> 5 <meta name="keywords" content=""/> 6 <meta name="description" content=""> 7 <meta char 阅读全文
摘要:
一、精度丢失和重写toFixed()函数 1、重写toFixed() 1 Number.prototype.toFixed = function(length){ 2 var carry = 0; //存放进位标志 3 var num, multiple; //num为原浮点数放大multiple倍 阅读全文