I have a HTML list of about 500 items and a "filter" box above it. I started by using jQuery to filter the list when I typed a letter (timing code added later): $('#filter').keyup( function() { var jqStart = (new Date).getTime(); var search = $(this).val().toLowerCase(); var $list = $('ul.ablist > li'); $list.each( function() { if ( $(this).text().toLowerCase().indexOf(search) === -1 ) $(this).hide(); else $(this).show(); } ); console.log('Time: ' + ((new Date).getTime() - jqStart)); } ); However, there was a couple of seconds delay after typing each letter (particularly the first letter). So I thought it may be slightly quicker if I used plain Javascript (I read recently that jQuery's each function is particularly slow). Here's my JS equivalent: document.getElementById('filter').addEventListener( 'keyup', function () { var jsStart = (new Date).getTime()...
first lets make a good Query string searcher in JS
ReplyDeletefunction querySt(qsName, url)
{
var theUrl;
if (url == null || url == undefined)
theUrl = window.location.search.substring(1); else theUrl = url;
var g = theUrl.split("&");
for (var i = 0; i < g.length; i++) {
var pair = g[i].split("=");
if (pair[0].toLowerCase() == qsName.toLowerCase())
{
return pair[1];
}
}
return null;
}
$(function (){
if (querySt("open")!='true') return;
});
taken from website http://www.onlineaspect.com/2009/06/10/reading-get-variables-with-javascript/
ReplyDeletefunction $_GET(q,s) {
s = s ? s : window.location.search;
var re = new RegExp('&'+q+'(?:=([^&]*))?(?=&|$)','i');
return (s=s.replace(/^?/,'&').match(re)) ? (typeof s[1] == 'undefined' ? '' : decodeURIComponent(s[1])) : undefined;
}
You can test location.href with a regex:
ReplyDeleteif (location.href.match(/open=true/)
// do something
You might want to work on the regex though, to make sure it works for you.