顯示“縮略語列表”(day27)

2020年6月11日

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Explaining the Document Object Model</title>
  <link rel="stylesheet" href="typography.css">
</head>
<body>
  <h1>What is the Document Object Model?</h1>
  <p>
    The <abbr title="World Wide Web Consortium">W3C</abbr> defines the <abbr title="Document Object Model">DOM</abbr> as:
  </p>
  <blockquote cite="http://www.w3.org/DOM/">
    <p>
      A platform- and language-neutral interface that will allow programs
      and scripts to dynamically access and update the content, structure and style of documents.
    </p>
  </blockquote>
  <p>
    It is an <abbr title="Application Programming Interface">API</abbr> 
    that can be used to navigate <abbr title="HyperText Markup Language">
    HTML</abbr> and <abbr title="eXtensible Markup Language">XML</abbr> documents.  
  </p>
  <script src="../js/addLoadEvent.js"></script>
  <script src="displayAbbreviations.js"></script>
 </body>
</html>
* {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Consolas";
  font-size: 10pt;
}

abbr {
  text-decoration: none;
  border: 0;
  font-style: normal;
}

function addLoadEvent(func){  //onload事件綁定函數
  var oldonload = window.onload;
  if(typeof window.onload != "function"){
    window.onload = func;
  } else {
    window.onload = function(){
      oldonload();
      func();
    }
  }
}
function displayAbbreviations(){
  if(!document.getElementsByTagName||
    !document.createElement||
    !document.createTextNode)return false;
  var abbreviations = document.getElementsByTagName("abbr");
  if(abbreviations.length < 1) return false;
  var defs = new Array();
  for(var i = 0;i < abbreviations.length; i++){
    var definition = abbreviations[i].getAttribute("title");
    var key = abbreviations[i].lastChild.nodeValue;
    defs[key] = definition;
  }
  var dlist = document.createElement("dl");
  for(key in defs){
    var definition = defs[key];
    var dtitle = document.createElement("dt");
    var dtitle_text = document.createTextNode(key);
    dtitle.appendChild(dtitle_text);
    var ddesc = document.createElement("dd");
    var ddesc_text = document.createTextNode(definition);
    ddesc.appendChild(ddesc_text);
    dlist.appendChild(dtitle);
    dlist.appendChild(ddesc);
  }
  var header = document.createElement("h2");
  var header_text = document.createTextNode("Abbreviations");
  header.appendChild(header_text);
  document.body.appendChild(header);
  document.body.appendChild(dlist);
}

addLoadEvent(displayAbbreviations);

 

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