Replace Only Once Body Text, With Some Html, By An Iframe
What I need to do I display an iframe with javascript in the body of an HTML page. With something like that document.write('); In this iframe ther
Solution 1:
With the help of xiaoyi, I've found some solutions :
- Stop the loop and replace only the first match
- Globalize the functions to search/replace multiple keywords
I think that it could be optimized, but for me it works like a charm, and I share it with you, if it can help anyone (don't forget to change the target of the document, here "parent") :
(function(){
// don't replace text within these tagsvar skipTags = { 'a': 1, 'style': 1, 'script': 1, 'iframe': 1, 'meta':1, 'title':1, 'img':1, 'h':1 };
// find text nodes to apply replFn tofunctionfindKW( el, term, replFn )
{
var child, tag,found=false;
for (var i = 0;i<=el.childNodes.length - 1 && !found; i++)
{
child = el.childNodes[i];
if (child.nodeType == 1)
{ // ELEMENT_NODE
tag = child.nodeName.toLowerCase();
if (!(tag in skipTags))
{
findKW(child, term, replFn);
}
}
elseif (child.nodeType == 3)
{ // TEXT_NODE
found=replaceKW(child, term, replFn); // if found=true, we stop the loop
}
}
};
// replace terms in text according to replFnfunctionreplaceKW( text, term, replFn)
{
var match,
matches = [],found=false;
while (match = term.exec(text.data))
{
matches.push(match);
}
for (var i = 0;i<=matches.length - 1 && !found; i++)
{
match = matches[i];
// cut out the text node to replace
text.splitText(match.index);
text.nextSibling.splitText(match[1].length);
text.parentNode.replaceChild(replFn(match[1]), text.nextSibling);
if(matches[i])found=true;// To stop the loop
}
return found;
};
// First search/replacevar replTerm = 'keyword';
findKW(
parent.document.body,
newRegExp('\\b(' + replTerm + ')\\b', 'gi'),
function (match)
{
var link = parent.document.createElement('a');
link.href = 'http://www.okisurf.com/#q=' + replTerm;
link.target = '_blank';
link.innerHTML = match;
return link;
}
);
// A second search/replacevar replTerm = 'word';
findKW(
parent.document.body,
newRegExp('\\b(' + replTerm + ')\\b', 'gi'),
function (match)
{
var link = parent.document.createElement('a');
link.href = 'http://www.okisurf.com/#q=' + replTerm;
link.target = '_blank';
link.innerHTML = match;
return link;
}
);
// Other search/replace// ...
}());
I've also discovered that the second solution doesn't works with Internet Explorer witch doesn't accept the createTreeWalker()
DOM function
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