How can i get all text nodes inside a dom range?_问答_开发者

How can i get all text nodes inside a dom range?

开发者 https://www.devze.com 2023-04-11 15:40 出处：网络

I am working with a real time editor and need to find all text nodes that are inside the range a user has selected.

Example (the "|" marks the selection range start and end point):

<p>Here starts the |selection.</p>
<p>This is fully in the range.</p>
<p>This only |partial.</p>

How do i find all those nodes? (i do not want to find the textnode "Here" in case there is more than one textnodes in the first paragr开发者_Python百科aph! (there could be several!))

Rangy (disclosure: written by me) does this for you:

range.getNodes([3]); // 3 is Node.TEXT_NODE

Otherwise, I'd suggest traversing the DOM of the range's commonAncestorContainer and for each text node encountered, check whether it overlaps the range by creating a range for the text node (using selectNode()) and using its compareBoundaryPoints() method to compare it to the selection range.

Assuming you are interested only in eliminating the text nodes that are not selected, this might work for you.

 var selectedTextOfFirstNode = '';
 //for simplicity assuming one selected range
 var range = window.getSelection().getRangeAt(0);
 if (range.startContainer.nodeType == 3)   
     selectedTextOfFirstNode = range.startContainer.textContent
                                           .substring(range.startOffset);

This gives the string "selection." and leaves off the text that is not selected. You can do the same thing with range.endContainer Now you can create text nodes using this text if you are interested in nodes and not the text that is selected.

Hey firend try below code

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>payam jabbari</title>
<script src="http://code.jquery.com/jquery-2.0.2.min.js" type="text/javascript"></script>
<script type="text/javascript">

$(document).ready(function(){
    var startNode = $('p.first').contents().get(0);
var endNode = $('span.second').contents().get(0);
var range = document.createRange();
range.setStart(startNode, 0);
range.setEnd(endNode, 5);
var selection = document.getSelection();
selection.addRange(range);
// below code return all nodes in selection range. this code work in all browser
var nodes = range.cloneContents().querySelectorAll("*");
for(var i=0;i<nodes.length;i++)
{
   alert(nodes[i].innerHTML);
}
});
</script>
</head>

<body>
<div>

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<ol>
    <li>China says military will respond to provocations.</li>
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</ol>
</div>
</body>
</html>