Number原生类型的扩展

数值和字符串之间的转换
字符串  数值
Number.parseLocale(value)
Number.parseInvariant(value)
数值  字符串
Number.prototype.format(format)
Number.prototype.localeFormat(format)

localeFormat和parseLocale方法
需要将EnableScriptGlobalization属性设为true
浏览器中设置的语言文化
可以通过设置Page.Culture来改变
格式信息会输出到页面中

parseInvariant和format方法
相当于语言环境为en-US

     < form id = " form1 "  runat = " server " >
         < asp:ScriptManager ID = " ScriptManager1 "  runat = " server "  EnableScriptGlobalization = " true "   />
        
         < div id = " info " ></ div >
         < script language = " javascript "  type = " text/javascript " >
            function display(text)
            {
                document.getElementById( " info " ).innerHTML  +=  (text  +   " <br /> " );
            }

            var num  =   12345678.12345678 ;
            display( " num.format('p') =  "   +  num.format( " p " ));
            display( " num.format('d') =  "   +  num.format( " d " ));
            display( " num.format('c') =  "   +  num.format( " c " ));
            display( " num.format('n') =  "   +  num.format( " n " ));
            display( " -------------- " )
            display( " num.localeFormat('p') =  "   +  num.localeFormat( " p " ));
            display( " num.localeFormat('d') =  "   +  num.localeFormat( " d " ));
            display( " num.localeFormat('c') =  "   +  num.localeFormat( " c " ));
            display( " num.localeFormat('n') =  "   +  num.localeFormat( " n " ));
         </ script >
     </ form >