Hide/show a icon depending upon the location.search? - javascript

Let us say i have a page http://www.abc.com/xyz.html and i am going to access this page in two ways
simple as it is
I will append some stuff to the url e.g. http://www.abc.com/xyz.html?nohome by just putting the value ?nohome manually in the code.
Now i will add some javascript code something like this
$(document).ready(function () {
if (location.search=="?value=nohome") {
// wanna hide a button in this current page
}
else {
// just show the original page.
}
});
Any help will be appreciated.

As you are using jQuery to catch the DOM-ready event, I guess a jQuery solution to your problem would be fine, even though the question isn't tagged jQuery:
You can use .hide() to hide and element:
$(document).ready(function () {
if (location.search=="?value=nohome")
{
$("#idOfElementToHide").hide();
}
// Got rid of the else statement, since you didn't want to do anything on else
});

Related

jQuery On Not working for simple script

There must be some mental block that I'm just not getting...My entire site is working fine, but dynamically created links with an ID are not. Something is wrong in my code...it's as simple as this but it's not working, please show me my dumb mistake (I know it's something simple).
so for example this would be a generated link:
Hi
and then I have this script:
$(document).ready(function() {
$(document).on('click','#himan',function(){
alert('hi');
});
});
but nothing happens, and I get no errors...I'm lost, maybe my coffee is not working today. Can someone help me?
Here is demo
It is working perfect:
$(document).ready(function () {
$(document).on('click', '#himan', function () {
alert('hi');
});
});
reason might be duplicate of id, there must only one element with specific id because id is a unique on a page, if you adding multiple element use class instead of id.
Handle the click event on #himan itself...
function initializeDynamicLinks() {
$('#himan').on('click',function(){
alert('hi');
});
}
$(document).ready(function() {
initializeDynamicLinks()
});
Here you see it working: http://jsfiddle.net/digitalextremist/emUWL/
Rerun initializeDynamicLinks() whenever you add links dynamically.
And... as has been pointed out several times in comments, you need to make sure #himan only occurs once in your source to be completely sure everything will function properly.

Unhiding search result div with javascript or jquery without button click

I'm very frustrated right now... and making lots of mistakes. Sorry about that
I've been trying to unhide a specific div based on search results
If no search was made the div should not appear, and this is easy with css, but once the search is done I have to change the style to 'block'.
Since I'm using the google custom search javascript its too hard to replace the button for another similar button that triggers my javascript function.
I also couldn't figure out how to replace the "resultDiv" into some more complex path
I already done this javascript function to hide a div based on the result div...
css div style is at #main.section .widget.HTML
function check()
{
if (document.getElementById('resultDiv')) {
if ($('.gsc-expansionArea').is(":empty")) {
document.getElementById('resultDiv').style.display = 'none';
}
else {
document.getElementById('resultDiv').style.display = 'block';
}
}
}
I think there might be 2 possible solutions. First is to load the script
<body onLoad="check();">
but doesn't seems to work.
Second would be check URL for ?q= meaning a search was done, but I don't know how to get these parameters from URL.
Please assist me. Thank you
well, since you've tagged jquery:
$(window).load(function(){
check();
})
and your function check() could be more like
function check() {
if ($('#resultDiv').length) {
if ($('.gsc-expansionArea').is(":empty")) {
$('#resultDiv').css({'display': 'none'})
}
else {
$('#resultDiv').css({'display': 'block'})
}
}
}
--
Second would be check URL for ?q= meaning a search was done, but I
don't know how to get these parameters from URL.
use location.search
Location search Property
MDN window.location
Replace
<body onLoad="javascript:check();">
with
<body onLoad="check();">
You can use
$(document).ready(function()
{
check();
}
to load the function when the page loads. You can also simplify your function with jQuery:
function check()
{
var isEmpty= $('.gsc-expansionArea').is(":empty");
$('#resultDiv').toggle(isEmpty);
}
The documentation for toggle is here.

How do I run a jQuery function when any link (a) on my site is clicked

I have a new site build on corecommerce system which does not have much access to HTML and non to PHP. Only thing I can use is JavaScript. Their system is currently not great on page load speed so I wanted at least customers to know something is happening while they wait 5-8 seconds for a page to load. So I found some pieces of code and put them together to show an overlay loading GIF while page is loading. Currently it will run if you click anywhere on the page but I want it to run only when a link (a href) on the site is clicked (any link).
I know you can do a code that will run while page loading but this isn't good enough as it will execute too late (after few seconds)
Anyway, this is my website www.cosmeticsbynature.com and this is the code I use. Any help will be great.
<div id="loading"><img src="doen'tallowmetopostanimage" border=0></div>
<script type="text/javascript">
var ld=(document.all);
var ns4=document.layers;
var ns6=document.getElementById&&!document.all;
var ie4=document.all;
if (ns4)
ld=document.loading;
else if (ns6)
ld=document.getElementById("loading").style;
else if (ie4)
ld=document.all.loading.style;
jQuery(document).click(function()
{
if(ns4){ld.visibility="show";}
else if (ns6||ie4)
var pb = document.getElementById("loading");
pb.innerHTML = '<img src="http://www.cosmeticsbynature.com/00222-1/design/image/loading.gif" border=0>';
ld.display="block";
});
</script>
Doing this will be easier if you include jQuery in your pages. Once that is done, you can do:
$('a').click(function() {
// .. your code here ..
return true; // return true so that the browser will navigate to the clicked a's href
}
//to select all links on a page in jQuery
jQuery('a')
//and then to bind an event to all links present when this code runs (`.on()` is the same as `.bind()` here)
jQuery('a').on('click', function () {
//my click code here
});
//and to bind to all links even if you add them after the DOM initially loads (`on()` is the same as `.delegate()` here; with slightly different syntax, the event and selector are switched)
jQuery(document).on('click', 'a', function () {
//my click code here
});
Note: .on() is new in jQuery 1.7.
what you are doing is binding the click handler to the document so where ever the user will click the code will be executed, change this piece of code
jQuery(document).click(function()
to
jQuery("a").click(function()
$("a").click(function(){
//show the busy image
});
How about this - I assume #loading { display:none}
<div id="loading"><img src="http://www.cosmeticsbynature.com/00222-1/design/image/loading.gif" border=0></div>
<script type="text/javascript">
document.getElementById('loading').style.display='block'; // show the loading immediately
window.onload=function()
document.getElementById('loading').style.display='none'; // hide the loading when done
}
</script>
http://jsfiddle.net/vol7ron/wp7yU/
A problem that I see in most of the answers given is that people assume click events only come from <a> (anchor) tags. In my practice, I often add click events to span and li tags. The answers given do not take those into consideration.
The solution below sniffs for elements that contain both events, which are created with jQuery.click(function(){}) or <htmlelement onclick="" />.
$(document).ready(function(){
// create jQuery event (for test)
$('#jqueryevent').click(function(){alert('jqueryevent');});
// loop through all body elements
$('body *').each(function(){
// check for HTML created onclick
if(this.onclick && this.onclick.toString() != ''){
console.log($(this).text(), this.onclick.toString());
}
// jQuery set click events
if($(this).data('events')){
for (key in($(this).data('events')))
if (key == 'click')
console.log( $(this).text()
, $(this).data('events')[key][0].handler.toString());
}
});
});
Using the above, you might want to create an array and push elements found into the array (every place you see console.log

Basic jQuery problems

I am struggling with jQuery for a long time now. It is very powerful and there are lot of great things we can do with jQuery.
My problem is that I use a lot of jQuery features at the same time. E.g. I have a site that displays items, 12 items per page and I can paginate through the pages using jQuery. On the same page I implemented a thumpsUp button that uses jQuery too.
The more jQuery features I use, the harder it gets to arrange them properly. E.g.:
$(document).ready(function() {
$(".cornerize").corner("5px"); //cornerize links
$('a#verd').live('click', exSite); //open iframe
$("a.tp").live('click', thumpsUp); //thumps up
$("a#next").click(getProgramms); //next page
$("a#previous").click(getProgramms); //previous page
//for the current page reload the content
$("a#page").each(function() {
$(this).click(getProgramms);
});
//this isn't working...
$('.smallerpost').live('click', alert('test'));
});
Have a look at the last code line. I want to perform an alert when the div element is clicked. Instead of doing so the page shows me the alert when I refresh the page. A click on the div has no effect.
What am I doing wrong? What would be a strategy here to have clean and working jQuery?
Change that line to
$('.smallerpost').live('click', function () {
alert('test');
});
and while you're there...
$("a#page").each(function() {
$(this).click(getProgramms);
});
has exactly the same effect as:
$('a#page').click(getProgramms);
... but technically there should be only one element with id='page' anyway
Your code $('.smallerpost').live('click', alert('test')); calls the alert immediately and passes its return value into the live function as the second parameter. What you want to pass there is a function to call, so you want:
$('.smallerpost').live('click', function() {
alert('test');
});
or
$('.smallerpost').live('click', handleSmallerPostClick);
function handleSmallerPostClick() {
alert('test');
}
...depending on how you structure your code.

Using Jquery to slowly hide a div

I'm trying to make some code which finds if a div exists, and if it does then have it fade away slowly. I have this to determine whether or not the div exists
if($('#error').length != 0)
{
$('#error').hide(500);
}
And that does work but only on a refresh, I've been attempting to put it in a timer like this:
var refreshId = setInterval(function()
{
if($('#error').length != 0)
{
$('#error').hide(500);
}
}, 500);
But its not getting rid of the innerHTML! I have some code which on hover alters the innerHTML of the error div so I can fill it up, but for some reason this isn't working, any advice would help!
Thank you!
$("#error").fadeOut(500);
Update:
If you are looking to check for existence:
var msg = $("#error");
if(msg.length) {
msg.fadeOut(500);
}
If you want to empty it:
$("#error").empty();
If you just want to delay 500ms then fade out, do this:
$("#error").delay(500).fadeOut();
To also empty the element, provide a callback to .fadeOut() like this:
$("#error").delay(500).fadeOut(function() {
$(this).html('');
});
There's no need to check .length, if an element that matches the selector isn't present, nothing happens :)
The div you're trying to hide likely hasn't loaded by the time your script runs. Try this; it will defer execution until the DOM is loaded:
$(document).ready(function() {
// put your code here
});
This is a good practice when using jQuery anyway.
Reference: http://docs.jquery.com/Tutorials:Introducing_$(document).ready()

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