这个抽奖，怎么修改得奖的概率？不让选哪个就不选哪个？

2015-12-08 12:41:40 246 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

超详细网安学习路线（Day1-Day2）渗透测试（Penetration Testing），就是一种通过模拟恶意攻击者的技术与方法，挫败目标系统安全控制措施，取得访问控制权，并发现具备业务影响后果安全隐患的一种安全测试与评估方法。简单来说，就是合法去入侵别人的系统，来帮助其找出漏洞，增强防护能力。阅读详情

function GetRandomNum(Min,Max){  



		var Range = Max - Min;  



		var Rand = Math.random();  



		return(Min + Math.round(Rand * Range));  



}  

</script>

<script type="text/javascript">	

$(document).ready(function(){

	$("#tip").hover(

		function () {

			$(this).attr("src","images/four2.gif");

		},

		function () {

			$(this).attr("src","images/four1.gif");

		}

	); 

	

	

	var roll= function(){

		$(this).unbind('mouseenter').unbind('mouseleave'); 

		$(this).attr("src","images/four2.gif");

		if(parseInt($(".coud_num").html())<= 0){

			alert("您的抽奖机会已用完，请截图发给微信客服!");

			var json_error= "error_0";

			return false;

		}



		$(this).unbind("click",roll);

		

		var angle = 0;

		

		var Rand_num = GetRandomNum(1,99);

		

		//var json_error;

		

		switch(Rand_num){ 

		case "2":

						var json_error="win_1";

						break;

		case "32":

						var json_error="win_2";

						break;

		case "62":

						var json_error="win_3";

						break;

		case "92":

						var json_error="win_4";

						break;	

	    default :

			var json_error="error_2";											

		

		 }

		

				switch(json_error){   

					case "error_0":   

						alert("您的抽奖机会已用完，您可以完成任务获取更多抽奖机会.");

						return false;

						break;

					case "win_1":

						var $dushu= 1080;

						break;

					case "win_2":

						var $dushu= 1350;  						

						break;   

					case "win_3": 

						var $dushu= 1260;			

						break;   

					case "win_4": 

						var $dushu= 1170;

						break;   

					case "error_2":

						var error_num = GetRandomNum(1,4);

						if(error_num==1){

							var $dushu= 1125;

						}else if(error_num==2){

							var $dushu= 1215;

						}else if(error_num==3){

							var $dushu= 1305;

						}else if(error_num==4){

							var $dushu= 1395;

						}

						

						break;   

					default: 		

			}

		

		

		

		

	    var zhuan=setInterval(function(){

				angle+=15;

				$("#img").rotate(angle);

				if(angle >= $dushu){

					clearInterval(zhuan);

					switch(json_error){ 

					

						case "win_1":   

							alert("手气不错！");

							break;

						case "win_2":   

							alert("手气不错！");

							break;

						case "win_3":   

							alert("手气不错!");

							break;

						case "win_4":   

							alert("手气不错!");

							break;

						case "error_2":

						

							if(error_num==1){

								alert("手气不错！");

							}else if(error_num==2){

								alert("手气不错！");

							}else if(error_num==3){

								alert("手气不错！");

							}else if(error_num==4){

								alert("手气不错！");

							}   

							

							break;

						default:

					}

					

					$(".coud_num").html($(".coud_num").html()-1);

					$("#tip").bind("click",roll	);

					

					$("#tip").attr("src","images/four1.gif");

					$("#tip").hover(

						function () {

							$(this).attr("src","images/four1.gif");

						},

						function () {

							$(this).attr("src","images/four2.gif");

						}

					); 



					

				}				

			},50);				

			

		

	}

	

	

		$("#tip").bind("click",roll	);

	

	

	

});

document.onselectstart=new Function("event.returnValue=false;");

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