How to position popover over a highlighted portion of text?

问题

Assume this scenario where there is a body of text. And, on highlighting a word from it, I want a popover to show up with the tooltip positioned at the highlighted word.

Kind of like how mac shows definitions of words like below -

It's an angularjs application, and am using angularui. So, an angular ui focussed solution would be preferable but not necessary.

Thanks in advance.

回答1:

You can use following code to get do what you want to do... Good Luck:

<html>

<head>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>

  <script>
    function getSelectedText() {
      var text = "";
      if (typeof window.getSelection != "undefined") {
        text = window.getSelection().toString();
      } else if (typeof document.selection != "undefined" && document.selection.type == "Text") {
        text = document.selection.createRange().text;
      }
      return text;
    }

    function doSomethingWithSelectedText() {
      var selectedText = getSelectedText();
      if (selectedText) {

        $('#infoDiv').css('display', 'block');
        $('#infoDiv').css('position', 'absolute');
        $('#infoDiv').css('left', event.clientX + 10);
        $('#infoDiv').css('top', event.clientY + 15);
      } else {
        $('#infoDiv').css('display', 'none');
      };
    };

    document.onmouseup = doSomethingWithSelectedText;
    document.onkeyup = doSomethingWithSelectedText;
  </script>
  <style>
    /*Tooltip div styling */
    .tooltipDiv {
      display: none;
      width: 250px;
      z-index: 101;
      background-color: #fff;
      border: 3px solid #666;
      padding: 12px 12px 12px 12px;
      border-radius: 0px 25px 0px 25px;
    }
  </style>

</head>

<body>
  <div id="infoDiv" class="tooltipDiv">This is where your will put whatever you like...</div>

  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
</body>

</html>

来源：https://stackoverflow.com/questions/28246522/how-to-position-popover-over-a-highlighted-portion-of-text

标签

javascript

jquery

css

angularjs

angular-ui