Best way to pick up text in a HTML element that is in the parent node only
I have, for example, markup like this
<div id="content">
<p>Here is some wonderful text, and here is a <a href="#">link</a>. All links should have a `href` attribute.</p>
</div>
Now I want to be able to perform some regex replace on the text inside the p element, but not in开发者_如何学Python any HTML, i.e. be able to match the href within backticks, but not inside the anchor element.
I thought about regex, but as the general consensus is, I shouldn't be using them to parse HTML.
My current method of doing this is like so: I've got a bunch of words in an array, and I am looping through them and making an object of data like so:
termsData[term] = {
regex: new RegExp('(\\b' + term + '\\b)', 'gmi'),
replaceWith: '<span>{TERM}</span>'
};
I then loop through it again, making the replacements like so:
var html = obj.html();
$.each(terms, function(i, term) {
// Replace each word in the HTML with the span
html = html.replace(termsData[term].regex, termsData[term].replaceWith.replace(/{TERM}/, '$1'));
});
obj.html(html);
Now I did a lot of this last night at an ungodly hour, and copying and pasting it into here seems to make think I should refactor some of this.
So from you should be able to tell, I want to be able to replace plain text, but not anything inside a HTML tag.
What would be the best way to do it?
Note: The source code is coming from here if you'd like a better look.
You're right to not want to be processing HTML with regex. It's also bad news to be assigning huge chunks of .html()
; apart from the performance drawbacks of serialising and reparsing a large amount of HTML, you'll also lose unserialisable data like event listeners, form data and JS properties/references.
See the findText
function in this answer and call something like (assuming obj is a jQuery wrapper over your topmost node to search in):
findText(obj[0], /\b(term1|term2|term3)\b/g, function(node, match) {
var span= document.createElement('span');
node.splitText(match.index+match[0].length);
span.appendChild(node.splitText(match.index));
node.parentNode.insertBefore(span, node.nextSibling);
});
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