Drag and Click

The Demo Webpage to Tell Drag and Click

Sometimes it’s not that intuitive to tell drag and click event, as both of them are detecting mousedown event. The following script handles this problem, and provide basic drag and click functions.

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<!DOCTYPE html>
<html lang="zh-CN">
<meta charset="UTF-8" />
<meta view-port="width=device-width, initial-scale" />
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.5.0/css/all.css">
<head>
  <style>
    #box1, #box2, #box3, #box4, #box5, #box6 {
      position: absolute;
    }

    * {
      margin: 0;
      padding: 0;
    }

    body {
      font-size: 100%;
      margin: 3em;

    }

    h2, p {
      font-size: 100%;
      font-weight: normal;
    }

    ul, li {
      list-style: none;
    }

    ul {
      overflow: hidden;
      padding: 3em;
    }

    ul li a {
      text-decoration: none;
      color: #000;
      background: #F1F1F1;
      display: block;
      height: 350px;
      width: 280px;
      padding: 1em;
      /* Firefox */
      -moz-box-shadow: 5px 5px 7px rgba(20, 20, 20, 1);
      /* Safari+Chrome */
      -webkit-box-shadow: 5px 5px 7px rgba(20, 20, 20, .5);
      /* Opera */
      box-shadow: 5px 5px 7px rgba(20, 20, 20, .5);
      -webkit-transform: rotate(-6deg);
      -o-transform: rotate(-6deg);
      -moz-transform: rotate(-6deg);
      -moz-transition: -moz-transform .15s linear;
      -o-transition: -o-transform .15s linear;
      -webkit-transition: -webkit-transform .15s linear;
    }

    ul li {
      margin: 1em;
      float: left;
    }

    ul li h2 {
      font-size: 140%;
      font-weight: bold;
      padding-bottom: 20px;
    }

    ul li p {
      font-size: 120%;
    }

    .contact-info {
      position: fixed;
      top: 40%;
      z-index: 99999;
      left: 0;

    }

    .option {
      cursor: pointer;
      position: relative;
    }

    .option i {
      display: block;
      width: 60px;
      text-align: center;
      height: 60px;
      line-height: 60px;
      background: #f1f1f1;
      color: #b9b9b9;
      font-size: 20px;
    }

    .option:hover i {
      color: #6F7784;
    }

    .text {
      position: absolute;
      height: 60px;
      width: 120px;
      background: #6F7784;
      top: 0;
      z-index: -1;
      left: -140px;
      color: #f2e9e1;
      line-height: 60px;
      text-align: center;
      transition: left 0.6s;
    }

    .option:hover .text {
      left: 60px;
    }
  </style>

  <script type="text/javascript">
    var noClick = false;
    window.onload = function () {
      var box1 = document.getElementById("box1");
      var box2 = document.getElementById("box2");
      var box3 = document.getElementById("box3");
      var box4 = document.getElementById("box4");
      var box5 = document.getElementById("box5");
      var box6 = document.getElementById("box6");
      drag(box1);
      drag(box2);
      drag(box3);
      drag(box4);
      drag(box5);
      drag(box6);
      function drag(obj) {
        console.log(123);
        obj.onmousedown = function (event) {
          obj.setCapture && obj.setCapture();
          event = event || window.event;

          var ol = event.clientX - obj.offsetLeft;
          var ot = event.clientY - obj.offsetTop;

          document.onmousemove = function (event) {
            noClick = true;
            event = event || window.event;
            var left = event.clientX - ol;
            var top = event.clientY - ot;
            obj.style.left = left + "px";
            obj.style.top = top + "px";
            return false;
          };

          document.onmouseup = function (e) {
            document.onmousemove = null;
            document.onmouseup = null;
            obj.releaseCapture && obj.releaseCapture();
            return false;
          };
          
          return false;
        };
        obj.onclick = function (event){
          if(noClick){
            noClick = false;
            event.preventDefault();
            return false;
          }
        }
      }
    }
  </script>
</head>
<body>
  <ul>
    <li>
      <a href="javascript:alert('Hi, you clicked me!');" id="box1">
        <h2>Wednesday 6th September, 10:36pm</h2>
        <p>
          1, I have continued trade talks with Iran.
          <br>
          2, Replied to Trump about stuff.
          <br>
          3, Followed up on trade deals with Israel.
          <br>
          4, Started hopeful trade deals with Egypt.
        </p>
      </a>
    </li>
    <li>
      <a href="javascript:alert('Hi, you clicked me!');" id="box2">
        <h2>Wednesday 6th September, 7:22pm</h2>
        <p>
          Things to do...
          <br>
          1, follow up trade deals and Arms deals in case people have forgotten i.e., Israel, Turkey, Libya and Egypt
        </p>
      </a>
    </li>
    <li>
      <a href="javascript:alert('Hi, you clicked me!');" id="box3">
        <h2>Monday 4th September, 5:09pm</h2>
        <p>
          Important: We decided to have a meeting at 7pm Tuesday to discuss Israel-Palestine conflict.
        </p>
      </a>
    </li>
    <li>
      <a href="javascript:alert('Hi, you clicked me!');" id="box4">
        <h2>Sunday 3rd September, 5:37pm</h2>
        <p>
          1, I have assured Morocco that we support them in their ownership of the Western Sahara.
          <br>
          2, Also, have tweeted about it and contacted all media issuing a statement that we support Morocco
        </p>
      </a>
    </li>
    <li>
      <a href="javascript:alert('Hi, you clicked me!');" id="box5">
        <h2>Saturday 2nd September, 4:56pm</h2>
        <p>
          I have continued trade talks with Saudi Arabia, Israel and Morocco. No response yet. I have also added the
          trade talks tags to each of the emails and archived them.
        </p>
      </a>
    </li>
    <li>
      <a href="javascript:alert('Hi, you clicked me!');" id="box6">
        <h2>Saturday 2nd September, 2:48pm</h2>
        <p>I'll do Algeria, Libya and Iran
          <br>
          you can do Saudi, Israel and Morocco
          <br>
          then we need to talk more with the European leaders let's try start talks with them about Syria and say we don't
          believe a ceasefire will work
        </p>
      </a>
    </li>

  </ul>

  <!-- set a side bar -->
  <div class="contact-info">
    <div class="option">
      <i class="fa fa-home"></i>
      <a class="text" href="#">Home</a>
    </div>
    <div class="option">
      <i class="fa fa-envelope"></i>
      <a class="text" href="email">Email</a>
    </div>
    <div class="option">
      <i class="fab fa-twitter-square"></i>
      <a class="text" href="tweet">Tweet</a>
    </div>
    <div class="option">
      <i class="fas fa-newspaper"></i>
      <a class="text" href="news">News</a>
    </div>
    <div class="option">
      <i class="fas fa-comment-alt"></i>
      <a class="text" href="chat">Chat</a>
    </div>
    <div class="option">
      <i class="fa fa-cog"></i>
      <a class="text" href="control">Control</a>
    </div>
  </div>

</body>
</html>