It's probably something really simple, but I'm just learning.
There's a page with 3 blockquote tags on it, and I'd need to get the innerHTML of the one containing a certain string. I don't know how to search/match a string and get the innerHTML of the tag containing the matched result.
Any help would be appreciated!
var searchString = 'The stuff in innerHTML';
var elements = document.getElementsByTagName('blockquote')
for (var i = 0; i < elements.length; i++) {
if (elements[i].innerHTML.indexOf(searchString) !== -1) {
alert('Match');
break;
}
}
:)
Btw there would be a much nicer method if you'd be using Prorotype JS (which is much better than jQuery btw):
var el = $$('blockquote').find(function(el) {
return el.innerHTML.indexOf('The string you are looking for.') !== -1;
});
You could of course also use regular expressions to find the string, which might be more useful (use el.match() for that).
If you need to search through every <blockquote>
on the page, try this:
function findBlockquoteContainingHtml(matchString) {
var blockquoteElements = document.getElementsByTagName('BLOCKQUOTE');
var i;
for (i = 0; i < blockquoteElements.length; i++) {
if (blockquoteElements[i].innerHTML.indexOf(matchString) >= 0) {
return blockquoteElements[i].innerHTML;
}
}
return null;
}
Assign an id to the blockquote elements then you can get the innerHTML like this:
HTML:
<blockquote id="bq1">Foo</blockquote>
JS:
var quote1 = document.getElementById('bq1').innerHTML;
Be careful using innerHTML
to search for text within a tag, as that may also search for text in attributes or tags as well.
You can find all blockquote
elements using:
var elems = document.getElementsByTagName("blockquote")
You can then look through their innerHTML
, but I would recommend instead looking through their textContent
/ innerText
(sadly, this is not standardized across browser, it seems):
for (i in elems) {
var text = elems[i].textContent || elems[i].innerText;
if (text.match(/foo/)) {
alert(elems[i].innerHTML);
}
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.