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实例代码“Ctrl+/”提示“F11/ESC”全屏返回格式化恢复运行

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>.position() 实例</title>
  <link rel="stylesheet" href="//apps.bdimg.com/libs/jqueryui/1.10.4/css/jquery-ui.min.css">
  <style>
  .positionDiv {
    position: absolute;
    width: 75px;
    height: 75px;
    background: green;
  }
  </style>
  <script src="//apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script>
  <script src="//apps.bdimg.com/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
</head>
<body>
 
<div id="targetElement">
  <div class="positionDiv" id="position1"></div>
  <div class="positionDiv" id="position2"></div>
  <div class="positionDiv" id="position3"></div>
  <div class="positionDiv" id="position4"></div>
</div>
 
<script>
$( "#position1" ).position({
  my: "center",
  at: "center",
  of: "#targetElement"
});
 
$( "#position2" ).position({
  my: "left top",
  at: "left top",
  of: "#targetElement"
});
 
$( "#position3" ).position({
  my: "right center",
  at: "right bottom",
  of: "#targetElement"
});
 
$( document ).mousemove(function( event ) {
  $( "#position4" ).position({
    my: "left+3 bottom-3",
    of: event,
    collision: "fit"
  });
});
</script>
 
</body>
</html>

AخA
 
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>.position() 实例</title>
  <link rel="stylesheet" href="//apps.bdimg.com/libs/jqueryui/1.10.4/css/jquery-ui.min.css">
  <style>
  .positionDiv {
    position: absolute;
    width: 75px;
    height: 75px;
    background: green;
  }
  </style>
  <script src="//apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script>
  <script src="//apps.bdimg.com/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
</head>
<body>
 
<div id="targetElement">
  <div class="positionDiv" id="position1"></div>
  <div class="positionDiv" id="position2"></div>