用JS 寻找水仙花的两种方法
第一种办法是运行正则表达式来实现的，如下列代码中的：markReg方法。这个方法可以判断n位数水仙花查找。只要指定option参数就行。
第二种办法是正常的方法来实现。如下列代码中的：markDemo方法。这个方法只实现3位数的水仙花查找。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>寻找水仙花-两种方法</title><script type="text/javascript" src="自己测试/jquery-ui/js/jquery-1.4.2.min.js"></script><script type="text/javascript">function Sxh(){this.value = 100;this.reg = /(\d)(\d)(\d)/;this.num = 3;this.markReg = function(){var str='';this.reg.exec(this.value);for(var j=1;j<this.num;j++){str += "Math.pow(RegExp.$"+j+","+this.num+")+";}str += "Math.pow(RegExp.$"+this.num+","+this.num+")";if(eval(str) == this.value){return true;}else{return false;}}this.set = function(option){this.value = option.value;this.num = option.num;this.reg = option.reg;}this.markDemo = function(){var a = Math.floor(this.value / 100);var b = Math.floor(this.value % 100 / 10);var c = Math.floor(this.value % 100 %10);var v = Math.pow(a,3)+Math.pow(b,3)+Math.pow(c,3);if(v == this.value){return true;}else{return false;}}}$(function(){var s = new Sxh();for(var j = 100; j<1000;j++){s.value = j;if(s.markReg()){$("#text").html($("#text").html()+" "+s.value);}if(s.markDemo()){$("#text").html($("#text").html()+" "+s.value);}}});function shui(i,reg,n){var str='';reg.exec(i);for(var j=1;j<n;j++){str += "Math.pow(RegExp.$"+j+","+n+")+";}str += "Math.pow(RegExp.$"+j+","+n+")";return eval(str);}</script></head><body><div id="text"> </div></body></html>?