日度归档:2020年2月22日

javascript中如何检测一个网址是否可以成功访问呢?


摘要:
下文讲述使用Jquery检测网址是否有效,如下所示:


实现思路:
使用$.ajax访问网址,如果能够正常访问,则代表网址有效

 
   <script>
   
function webUrlCheck() {
  $.ajax({
    type: "GET",
    cache: false,
    url: "http://www.maomao365.com",
    data: "",
    success: function() {
      //网址有效
    },
    error: function() {
      //code
    }
  });
}
	
   </script>
   

HTML5 required属性简介说明


摘要:
下文讲述html元素中required属性的简介说明,如下所示:


require 属性功能

require属性用于设置元素为必填项


require 属性举例

例:
设置html元素的input标签为必填项

 
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.maomao365.com/" />
<title>猫猫教程(www.maomao365.com)
required属性举例说明
</title>
</head>
<body>
<form>
  <input id="text" required />
  <input id="button"  value="查询" type="submit" />
</form>
</body>
</html>

html之required属性简介说明

html之required属性简介说明

如何用css 实现一个带挡位的风扇效果呢?


摘要:
下文讲述使用css实现一个风扇效果,如下所示:


实现思路:
1.绘制风扇形状
2.通过:checked设置不同选项产生不同的动画

例:

  
  <!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.maomao365.com/" />
<title>猫猫教程(www.maomao365.com)---
css风扇效果
</title>
<style>
@keyframes leafRotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
#fan {
  width: 230px;
  position: absolute;
  z-index: 10;
}
#fan .header {
  width: 230px;
  height: 230px;
  position: absolute;
  left: -15px;
  top: -15px;
  background: #42c7ea;
  border-radius: 50%;
  z-index: 10;
  border: 2px solid blue;
}
#fan .mask {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 2px solid blue;
  position: relative;
  background: #e4ecef;
  z-index: 11;
}
#fan .mask .logo {
  border: 2px solid blue;
  border-radius: 50%;
  position: absolute;
  width: 80px;
  height: 90px;
  text-align: center;
  line-height: 90px;
  color: blue;
  font-size: 14px;
  top: 53px;
  left: 58px;
  background: #42c7ea;
  z-index: 3;
}
#fan .mask .line {
  width: 200px;
  height: 2px;
  background: #3c8a93;
  position: absolute;
  top: 99px;
  z-index: 2;
}
#fan .mask .line_1 {
  width: 200px;
  height: 2px;
  background: #3c8a93;
  position: absolute;
  top: 99px;
  z-index: 2;
}
#fan .mask .line_2 {
  width: 200px;
  height: 2px;
  background: #3c8a93;
  position: absolute;
  top: 99px;
  z-index: 2;
  transform: rotate(30deg);
}
#fan .mask .line_3 {
  width: 200px;
  height: 2px;
  background: #3c8a93;
  position: absolute;
  top: 99px;
  z-index: 2;
  transform: rotate(60deg);
}
#fan .mask .line_4 {
  width: 200px;
  height: 2px;
  background: #3c8a93;
  position: absolute;
  top: 99px;
  z-index: 2;
  transform: rotate(90deg);
}
#fan .mask .line_5 {
  width: 200px;
  height: 2px;
  background: #3c8a93;
  position: absolute;
  top: 99px;
  z-index: 2;
  transform: rotate(120deg);
}
#fan .mask .line_6 {
  width: 200px;
  height: 2px;
  background: #3c8a93;
  position: absolute;
  top: 99px;
  z-index: 2;
  transform: rotate(150deg);
}
#fan .mask .leafs {
  z-index: 1;
  position: absolute;
  animation: leafRotate 0s infinite linear;
  transform-origin: center center;
  width: 200px;
  height: 200px;
}
#fan .mask .leafs .leaf {
  width: 72px;
  height: 60px;
  border-radius: 20% 40%;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  left: 100px;
  top: 100px;
  transform-origin: left top;
}
#fan .mask .leafs .leaf_1 {
  width: 72px;
  height: 60px;
  border-radius: 20% 40%;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  left: 100px;
  top: 100px;
  transform-origin: left top;
}
#fan .mask .leafs .leaf_2 {
  width: 72px;
  height: 60px;
  border-radius: 20% 40%;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  left: 100px;
  top: 100px;
  transform-origin: left top;
  transform: rotate(120deg);
}
#fan .mask .leafs .leaf_3 {
  width: 72px;
  height: 60px;
  border-radius: 20% 40%;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  left: 100px;
  top: 100px;
  transform-origin: left top;
  transform: rotate(240deg);
}
#fan .neck {
  width: 40px;
  height: 70px;
  border: 2px solid blue;
  background: #42c7ea;
  position: absolute;
  left: 80px;
  z-index: 9;
  border-radius: 0 0 5% 5%;
}
#fan .neck_footer {
  width: 50px;
  height: 20px;
  border: 2px solid blue;
  background: #77e1f1;
  position: absolute;
  top: 263px;
  left: 75px;
  border-radius: 50%;
  z-index: 8;
}
#fan .bottom {
  width: 200px;
  height: 80px;
  border-radius: 50%;
  border: 2px solid blue;
  background: #42c7ea;
  position: absolute;
  top: 250px;
  left: 0px;
  z-index: 7;
}
#fan .bottom_footer {
  width: 20px;
  height: 20px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 40%;
  z-index: 6;
  top: 310px;
}
#fan .bottom_footer_1 {
  width: 20px;
  height: 20px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 40%;
  z-index: 6;
  top: 310px;
  left: 20px;
}
#fan .bottom_footer_2 {
  width: 20px;
  height: 20px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 40%;
  z-index: 6;
  top: 310px;
  left: 160px;
}
#fan .switch {
  position: absolute;
  width: 24px;
  height: 24px;
  top: 296px;
  z-index: 13;
  opacity: 0;
  cursor: pointer;
}
#fan .switch_btn {
  display: inline-block;
  text-align: center;
  width: 18px;
  height: 20px;
  line-height: 20px;
  font-size: 12px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 50%;
  color: blue;
  cursor: pointer;
  top: 296px;
  z-index: 12;
  transform: rotateX(45deg);
}
#fan .switch_0 {
  position: absolute;
  width: 24px;
  height: 24px;
  top: 296px;
  z-index: 13;
  opacity: 0;
  cursor: pointer;
  left: 50px;
}
#fan .switch_0:checked + div + input + div + input + div + input + div + .mask .leafs {
  animation-play-state: paused;
}
#fan .switch_1 {
  position: absolute;
  width: 24px;
  height: 24px;
  top: 296px;
  z-index: 13;
  opacity: 0;
  cursor: pointer;
  left: 75px;
}
#fan .switch_1:checked + div {
  background: #a9af27;
  color: blue;
}
#fan .switch_1:checked + div + input + div + input + div + .mask .leafs {
  animation-duration: 0.7s;
}
#fan .switch_2 {
  position: absolute;
  width: 24px;
  height: 24px;
  top: 296px;
  z-index: 13;
  opacity: 0;
  cursor: pointer;
  left: 100px;
}
#fan .switch_2:checked + div {
  background: #a9af27;
  color: blue;
}
#fan .switch_2:checked + div + input + div + .mask .leafs {
  animation-duration: 0.4s;
}
#fan .switch_3 {
  position: absolute;
  width: 24px;
  height: 24px;
  top: 296px;
  z-index: 13;
  opacity: 0;
  cursor: pointer;
  left: 125px;
}
#fan .switch_3:checked + div {
  background: #a9af27;
  color: blue;
}
#fan .switch_3:checked + div + .mask .leafs {
  animation-duration: 0.3s;
}
#fan .switch_btn_0 {
  display: inline-block;
  text-align: center;
  width: 18px;
  height: 20px;
  line-height: 20px;
  font-size: 12px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 50%;
  color: blue;
  cursor: pointer;
  top: 296px;
  z-index: 12;
  transform: rotateX(45deg);
  left: 50px;
}
#fan .switch_btn_1 {
  display: inline-block;
  text-align: center;
  width: 18px;
  height: 20px;
  line-height: 20px;
  font-size: 12px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 50%;
  color: blue;
  cursor: pointer;
  top: 296px;
  z-index: 12;
  transform: rotateX(45deg);
  left: 75px;
}
#fan .switch_btn_2 {
  display: inline-block;
  text-align: center;
  width: 18px;
  height: 20px;
  line-height: 20px;
  font-size: 12px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 50%;
  color: blue;
  cursor: pointer;
  top: 296px;
  z-index: 12;
  transform: rotateX(45deg);
  left: 100px;
}
#fan .switch_btn_3 {
  display: inline-block;
  text-align: center;
  width: 18px;
  height: 20px;
  line-height: 20px;
  font-size: 12px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 50%;
  color: blue;
  cursor: pointer;
  top: 296px;
  z-index: 12;
  transform: rotateX(45deg);
  left: 125px;
}
#fan .on_off {
  position: absolute;
  width: 40px;
  height: 20px;
  top: 296px;
  z-index: 13;
  left: 80px;
  opacity: 0;
  cursor: pointer;
}
#fan .on_off:checked + div {
  box-shadow: none;
}
#fan .on_off:checked + div + .mask .leafs {
  animation: leafRotate 2s 1 ease-out;
  animation-delay: 1s;
  animation-fill-mode: forwards;
}
#fan .on_off_btn {
  display: inline-block;
  text-align: center;
  width: 40px;
  height: 20px;
  line-height: 20px;
  font-size: 12px;
  background: #bdcc2b;
  border: 2px solid blue;
  position: absolute;
  border-radius: 50%;
  color: blue;
  cursor: pointer;
  top: 296px;
  z-index: 12;
  left: 80px;
  box-shadow: inset 2px 2px 6px #555;
}
</style>
</head>
<body>
  <div id="fan">
    <input type="radio" name="switch" class="switch_0">
    <div class="switch_btn_0">0</div>
    <input type="radio" checked="" name="switch" class="switch_1">
    <div class="switch_btn_1">1</div>
    <input type="radio" name="switch" class="switch_2">
    <div class="switch_btn_2">2</div>
    <input type="radio" name="switch" class="switch_3">
    <div class="switch_btn_3">3</div>
    <div class="mask">
      <div class="logo">猫猫教程</div>
      <div class="line_1"></div>
      <div class="line_2"></div>
      <div class="line_3"></div>
      <div class="line_4"></div>
      <div class="line_5"></div>
      <div class="line_6"></div>
      <div class="leafs">
        <div class="leaf_1"></div>
        <div class="leaf_2"></div>
        <div class="leaf_3"></div>
      </div>
    </div>
    <div class="header"></div>
    <div class="neck"></div>
    <div class="neck_footer"></div>
    <div class="bottom"></div>
    <div class="bottom_footer_1"></div>
    <div class="bottom_footer_2"></div>
  </div>
</body>
</html>

css 实现风扇效果

css 实现风扇效果