首页 »Javascript教程 » javascript运算符:JavaScript 4则运算 »正文javascript运算符:JavaScript 4则运算来源: 发布时间:星期六, 2009年2月14日 浏览:0次 评论:0
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var alsoAString = '25'; var isANumber = 25; // var isEqual = (alsoAString ![]() var isEqual = (alsoAString ![]() //除法 ![]() ![]() ![]() //介绍说明:javascript ![]() ![]() ![]() ![]() ![]() ![]() ![]() // ![]() //返回值:arg1除以arg2 ![]() function accDiv(arg1,arg2){ var t1=0,t2=0,r1,r2; try{t1=arg1.toString ![]() try{t2=arg2.toString ![]() with(Math){ r1=Number(arg1.toString ![]() r2=Number(arg2.toString ![]() ![]() } } //给Number类型增加 ![]() ![]() ![]() ![]() Number.prototype.div = function (arg){ ![]() } //乘法 ![]() ![]() ![]() //介绍说明:javascript ![]() ![]() ![]() ![]() ![]() ![]() ![]() // ![]() //返回值:arg1乘以arg2 ![]() function accMul(arg1,arg2) { var m=0,s1=arg1.toString ![]() ![]() try{m ![]() try{m ![]() ![]() } //给Number类型增加 ![]() ![]() ![]() ![]() Number.prototype.mul = function (arg){ ![]() } //加法 ![]() ![]() ![]() //介绍说明:javascript ![]() ![]() ![]() ![]() ![]() ![]() ![]() // ![]() //返回值:arg1加上arg2 ![]() function accAdd(arg1,arg2){ var r1,r2,m; try{r1=arg1.toString ![]() try{r2=arg2.toString ![]() m=Math.pow(10,Math.max(r1,r2)) ![]() } //给Number类型增加 ![]() ![]() ![]() ![]() Number.prototype.add = function (arg){ ![]() } document.writeln("未改进 ![]() document.writeln("改进以后 ![]() document.writeln("未改进 ![]() document.writeln("改进后 ![]() </script> 0
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