topical media & game development
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professional-javascript-10-DOMRangeExample2.htm / htm



  <html>
      <head>
          <title>DOM Range Example</title>
          <script type="text/javascript">
              function useRanges() {
                  var oRange1 = document.createRange();
                  var oRange2 = document.createRange();
                  var oP1 = document.getElementById("p1");
                  
                  var iP1Index = -1;
                  for (var i=0; i < oP1.parentNode.childNodes.length; i++) {
                      if (oP1.parentNode.childNodes[i] == oP1) {
                          iP1Index = i;
                          break;
                      }
                  }
                          
                  oRange1.setStart(oP1.parentNode, iP1Index);
                  oRange1.setEnd(oP1.parentNode, iP1Index + 1);
                  oRange2.setStart(oP1, 0);
                  oRange2.setEnd(oP1, oP1.childNodes.length);
  
                  
                  document.getElementById("txtStartContainer1").value = oRange1.startContainer.tagName;
                  document.getElementById("txtStartOffset1").value = oRange1.startOffset;
                  document.getElementById("txtEndContainer1").value = oRange1.endContainer.tagName;
                  document.getElementById("txtEndOffset1").value = oRange1.endOffset;
                  document.getElementById("txtCommonAncestor1").value = oRange1.commonAncestorContainer.tagName;
  
                  document.getElementById("txtStartContainer2").value = oRange2.startContainer.tagName;
                  document.getElementById("txtStartOffset2").value = oRange2.startOffset;
                  document.getElementById("txtEndContainer2").value = oRange2.endContainer.tagName;
                  document.getElementById("txtEndOffset2").value = oRange2.endOffset;
                  document.getElementById("txtCommonAncestor2").value = oRange2.commonAncestorContainer.tagName;
              }
          </script>
      </head>
      <body><p id="p1"><b>Hello</b> World</p>
          <input type="button" value="Use Ranges" onclick="useRanges()" />        
          <table border="0">
          <tr>
              <td>
                  <fieldset>
                      <legend>oRange1</legend>
                      Start Container: <input type="text" id="txtStartContainer1" /><br />
                      Start Offset: <input type="text" id="txtStartOffset1" /><br />
                      End Container: <input type="text" id="txtEndContainer1" /><br />
                      End Offset: <input type="text" id="txtEndOffset1" /><br />
                      Common Ancestor: <input type="text" id="txtCommonAncestor1" /><br />    
                  </fieldset>
              </td>
              <td>
                  <fieldset>
                      <legend>oRange2</legend>
                      Start Container: <input type="text" id="txtStartContainer2" /><br />
                      Start Offset: <input type="text" id="txtStartOffset2" /><br />
                      End Container: <input type="text" id="txtEndContainer2" /><br />
                      End Offset: <input type="text" id="txtEndOffset2" /><br />
                      Common Ancestor: <input type="text" id="txtCommonAncestor2" /><br />
                  </fieldset>
              </td>
          </tr>
          </table>
          <p><strong>Note:</strong> This example uses DOM ranges and will only work in browsers that support DOM ranges. This example will fail in Internet Explorer.</p>
      </body>
  </html>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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