Get Selected HTML in browser via Javascript
I have a requirement for my web app to allow the user to "P开发者_高级运维rint Selected Only". In other words, a user selects text and potentially images and then clicks this option. I've seen examples of getting selected text with Javascript, but haven't found a solution for getting the selected html itself.
As an example if I have a document like so:
<html>
<head>
</head>
<body>
<p>A bunch of text</p>
<img src="someimage.jpg" />
<p>Even more text</p>
</body>
</html>
If user highlights the image and the second paragraph, I'd want the javascript to return:
<img src="someimage.jpg" />
<p>Even more text</p>
Is this possible and how would one go about doing it?
Edit: I ended up going with a js library called Rangy for this.
Here is some code I found somewhere but I lost the actual link and this seems to work.
http://jsfiddle.net/Y4BBq/
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>The serialized HTML of a selection in Mozilla and IE</title>
<script type="text/javascript">
function getHTMLOfSelection () {
var range;
if (document.selection && document.selection.createRange) {
range = document.selection.createRange();
return range.htmlText;
}
else if (window.getSelection) {
var selection = window.getSelection();
if (selection.rangeCount > 0) {
range = selection.getRangeAt(0);
var clonedSelection = range.cloneContents();
var div = document.createElement('div');
div.appendChild(clonedSelection);
return div.innerHTML;
}
else {
return '';
}
}
else {
return '';
}
}
</script>
</head>
<body>
<div>
<p>Some text to <span class="test">test</span> the selection on.
Kibology for <b>all</b><br />. All <i>for</i> Kibology.
</p>
</div>
<form action="">
<p>
<input type="button" value="show HTML of selection"
onclick="this.form.output.value = getHTMLOfSelection();">
</p>
<p>
<textarea name="output" rows="5" cols="80"></textarea>
</p>
</form>
</body>
</html>
There are some issues with the code (I tested with safari) where it doesn't return the exact selection.
Similar code with the same issues as the other implementation
http://snipplr.com/view/10912/get-html-of-selection/
http://jsfiddle.net/hwzqP/
getSelectionHTML = function () {
var userSelection;
if (window.getSelection) {
// W3C Ranges
userSelection = window.getSelection ();
// Get the range:
if (userSelection.getRangeAt)
var range = userSelection.getRangeAt (0);
else {
var range = document.createRange ();
range.setStart (userSelection.anchorNode, userSelection.anchorOffset);
range.setEnd (userSelection.focusNode, userSelection.focusOffset);
}
// And the HTML:
var clonedSelection = range.cloneContents ();
var div = document.createElement ('div');
div.appendChild (clonedSelection);
return div.innerHTML;
} else if (document.selection) {
// Explorer selection, return the HTML
userSelection = document.selection.createRange ();
return userSelection.htmlText;
} else {
return '';
}
};
I haven't read the source of this extension/bookmarklet, but I've tried it and it seems to work. You might find your answer in here:
http://blog.webkitchen.cz/view-selection-source-chrome-extension
加载中,请稍侯......
精彩评论