JavaScript定时器制作弹窗小广告

本文实例为大家分享了js定时器制作弹窗广告的具体代码，供大家参考，具体内容如下

<head>
 <meta charset="UTF-8">
 <title>Title</title>
 <style type="text/css">
 * {
  padding: 0;
  margin: 0;
 }
 li {
  list-style: none;
 }
 body {
  background: #940032;
 }

 #counter {
  width: 500px;
  height: 420px;
  background: #939;
  margin: 50px auto 0;
  position: relative;
 }

 #counter h2 {
  line-height: 42px;
  padding-left: 15px;
  font-size: 14px;
  font-family: arial;
  color: #ff3333;
 }

 #counter a {
  font-weight: normal;
  text-decoration: none;
  color: #ff3333;
 }

 #counter a:hover {
  text-decoration: underline;
 }

 #bg {
  width: 280px;
  height: 200px;
  border: 3px solid #680023;
  background: #990033;
  filter: alpha(opacity=80);
  opacity: 0.8;
  position: absolute;
  left: 50%;
  top: 115px;
  margin-left: -141px;
 }

 #counter_content {
  width: 250px;
  position: absolute;
  top: 130px;
  left: 130px;
  z-index: 1;
 }

 #counter_content h3 {
  margin-bottom: 10px;
 }

 #counter_content h3 input {
  border: none;
  width: 223px;
  height: 30px;
  line-height: 30px;
  padding: 0 10px;
  background: url(img/ico.png) no-repeat;
  text-align: right;
  color: #333;
  font-size: 14px;
  font-weight: bold;
 }

 #counter_content div {
  width: 250px;
 }

 #counter_content input {
  width: 60px;
  height: 30px;
  line-height: 30px;
  float: left;
  background: url(img/ico.png) no-repeat -303px 0;
  text-align: center;
  color: #fff;
  cursor: pointer;
  margin: 0 1px 4px 0;
  border: 0;
 }

 #counter_content div > input:hover {
  background: url(img/ico.png) no-repeat -243px 0;
 }

 #counter p {
  width: 500px;
  position: absolute;
  bottom: 20px;
  left: 0;
  color: #ff3333;
  text-align: center;
  font-size: 12px;
 }
 </style>
</head>
<body>
<div id="counter">
 <h2>简易计算</h2>
 <div id="counter_content">
 <h3><input id="input1" type="text" value="0"/></h3>
 <div id="div1">
  <input type="button" value="7" onclick="kick('7')"/>
  <input type="button" value="8" onclick="kick('8')"/>
  <input type="button" value="9" onclick="kick('9')"/>
  <input type="button" value="+" onclick="kick('+')"/>
  <input type="button" value="4" onclick="kick('4')"/>
  <input type="button" value="5" onclick="kick('5')"/>
  <input type="button" value="6" onclick="kick('6')"/>
  <input type="button" value="-" onclick="kick('-')"/>
  <input type="button" value="1" onclick="kick('1')"/>
  <input type="button" value="2" onclick="kick('2')"/>
  <input type="button" value="3" onclick="kick('3')"/>
  <input type="button" value="*" onclick="kick('*')"/>
  <input type="button" value="0" onclick="kick('0')"/>
  <input type="button" value="C" onclick="kick('C')"/>
  <input type="button" value="=" onclick="kick('=')"/>
  <input type="button" value="/" onclick="kick('/')"/>
 </div>
 </div>
</div>
</body>
<script>
 var showInput = document.getElementById("input1");
 var isClear = false;
 var tempStr = "";
 var clacType = "";
 var isContinue = true;
 function kick(clickValue) {
 switch (clickValue) {
  case "=":
  if (tempStr != "" && clacType != "") {
   showInput.value = clac(tempStr, showInput.value, clacType);
   isContinue = false;
   clacType = "";
  }
  break;
  case "+":
  case "-":
  case "*":
  case "/":
  //如果预存的操作符不为空 表示表示连续操作
  if (clacType != "" && !isContinue) { //先执行计算
   tempStr = clac(tempStr, showInput.value, clacType);
   isClear = true;
   clacType = clickValue;
  } else {
   tempStr = showInput.value; //点击操作符之后 预存字符
   isClear = true;//表示点击了操作符
   clacType = clickValue;//预存操作符
  }
  isContinue = true;
  break;
  case "C":
  showInput.value = "0";
  isClear = false;
  tempStr = "";
  clacType = "";
  break;
  default://普通的数字按钮点击
  showInput.value = showInput.value == "0" ? "" : showInput.value;
  isContinue = false;
  if (isClear) {
   showInput.value = "";
   showInput.value += clickValue;
   isClear = false;
  } else {
   showInput.value += clickValue;
  }
  break;
 }
 }


 function clac(num1, num2, type) {
 switch (type) {
  case "+":
  return Number(num1) + Number(num2);
  case "-":
  return Number(num1) - Number(num2);
  case "*":
  return Number(num1) * Number(num2);
  case "/":
  return Number(num1) / Number(num2);
  default:
  break;
 }
 }
 </script>

效果图：

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