Adding css class using javascript to header that is implemented using javascript - javascript

I am developing a website with many html files and just recently i started using seperated header and footer html files in order to save time by implementing them using javascript to my pages. The problem is now all the header and footer looks the same, while before using this handy technique i had the pages highlighted depending on the page you were on(this was done by manually adding class to different <a> tags depending on what the page(html file) it is), but now i can't find a way to target a specific <a>that would be targeted only on specific html to change it's css. The code looks something like this:
HTML home.html:
<div id="header"></div>
HTML header.html:
<ul>
<li id="LI_56">
Home
</li>
</ul>
Javascript looks like this:
$(function(){
$("#header").load("header.html");
$("#footer").load("footer.html");
});
css looks like this:
.home{
background-color:red;
}
and what I tried to do is:
<script>
$( document ).ready(function() {
document.getElementById('A_57').className = 'home';
});
</script>
But i get error:"TypeError: document.getElementById(...) is null" . When the header is already in my home.html and not implemented by javascript everything works fine, but that's no an option. Hoping anyone knows a solution. Using diffrent css files for each html is also clearly not an option - it should be as straight forward and developer friendly(smart & lazy) as possible! :) Thanks in advance!

Set the class name in a "complete" callback, this callback is executed after post-processing and HTML insertion has been performed:
$(function(){
$("#header").load("header.html", function() {
document.getElementById('A_57').className = 'home';
});
$("#footer").load("footer.html");
});

This is because the element doesn't yet exist. Add the class after the html has been loaded.
$(function(){
$("#header").load("header.html", function() {
var $homeLink = $('#header').find('a').filter(function() {
return $.trim($(this).text()) === 'Home'
});
$homeLink.addClass('home');
});
$("#footer").load("footer.html");
});

Related

HTML & JS Markup - better way possible?

I'm loading my html files into a #content div in order to avoid the complete page to reload when clicking on a link. I'm doing this by calling the following in my index.html:
[...]
<div id="content">
<script type="text/javascript">$("#content").load("home.html");</script>
</div>
The problem is that no javascript in my global.js will be executed if it's related to one of the html files that will be loaded into my #content div.
In order to handle that fact I simply put the js of the related html file right into that specific one by posting it with the <script> command, e.g. like this:
<script type="text/javascript">
$(document).ready(function () {
$(".faq").click(function () {
$(this).find(".faq_answer").toggle();
});
});
</script>
I'm totally unhappy with it and so my question is: is there a way I could put my js back in my global.js file?
If I understand correclty your question, you need to use even delegation to assign event handlers to elements that doesn't exist yet
$(document).on("click",".faq", function (){ ... })
Where document can be replaced by any container of .faq that exists at bind time.
For more details check "Direct and delegated" section here
Try to load the page through your global.js inside of keeping it in your html page.
Keep the script that will load the content first.
This should work

jQuery shows hidden content on refresh

I use this fancy little jQuery toggle on my site, works great. But now I have a little larger text area I want to hide, and therefore I've included it in another php file, but when the site opens\refreshes the content is briefly shown and then hidden? Have I done something wrong or does it simply not work right with includes in it ?
Show me?
<div class="content">
<?php include 'includes/test.php'?>
</div>
<script>
jQuery(document).ready(function() {
var par = jQuery('.content');
jQuery(par).hide();
});
jQuery('#toggleMe').click(function() {
jQuery('.content').slideToggle('fast');
return false;
});
</script>
Use css to hide it
.content{
display:none;
}
Also
var par = jQuery('.content');
is a jQuery object so don't need to wrap it again as
jQuery(par).hide();
Just use par.hide(); but in this case, when you will use css to hide the element, then you don't need this anymore.
That will happen. The document briefly shows all the HTML before executing the code in your ready handler. (It has nothing to do with the PHP include.) If you want an element hidden when the page loads, hide it using CSS.
#myElement {
display: none;
}
The toggle should still work correctly.
You just need to don't use jquery document ready function. just use style attribute.
Show me?
<div class="content" style="display:none">
<?php include 'includes/test.php'?>
</div>
<script>
jQuery(document).ready(function() {
jQuery('#toggleMe').click(function() {
jQuery('.content').slideToggle('fast');
return false;
});
</script>
If this information is sensitive/not supposed to be seen without access granted, hiding it with CSS will not fix your problem. If it's not, you can ignore all of this and just use CSS with a display: none property.
If the information IS supposed to be hidden:
You need to only load the file itself on-demand. You would request the data with AJAX, do a $('.content').html() or .append() and send the result back directly from the server to the browser using something like JSON.
You are using the "ready" function that meant it will hide the element when the document is ready (fully loaded).
You can hide it using css:
.contnet { display: none; }
how you render you site server side does not affect how the site is loaded on the browser, what affects it is how the specific browser chooses to load your javascript and html, what i would recommend is set the element to hidden with css, since that is applied before anything else. And keep you code as is, since the toggle will work anyways
You can also clean up the code a little bit.
<script>
$(document).ready(function(){
$('.content').hide();
$('#toggleMe').click(function(){
$('.content').slideToggle('fast');
});
});
</script>

Javascript syntax for jQuery .load() function

I've just attempted to make a simple script to use ajax to load a new part of a page. The class remove/add to change the relevant text colour works fine. However, the new html does not seem to appear. I have a feeling this is to do with my general js syntax but I can't work it out.
Javascript:
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#page_menu a").click(function() {
$("#page_menu p").removeClass("current");
$(this).children().addClass("current");
var project = $(this).attr("name");
var loadUrl = project + ".html";
$("#project_image").load(loadUrl);
return false;
});
});
</script>
An example of an anchor tag in the html would be:
<a name=example href="#">Example</a>
The html file I'm looking to load would be called "example.html" and the code in it:
<h1>Hello</h1>
I'm sure it's pretty straight-forward but I'm just not seeing it!
Cheers,
Rich
I would use the href of the anchor directly:
Example
<div id="project_image"></div>
And then AJAXify it:
$(function() {
$('#page_menu a').click(function() {
$('#page_menu p').removeClass('current');
$(this).children().addClass('current');
$('#project_image').load(this.href);
return false;
});
});
Anchor's most certainly do have a name attribute, so that part would be okay.. but to make things cleaner, change your anchor to:
Example
For length sake you can use shorthand syntax for $(document).ready, and also do the class changes in one chain. Then just load the page specified in the href and to see if the request actually worked, add a callback, like so:
$(function() {
$("#page_menu a").click(function(e) {
$("#page_menu p").removeClass("current").filter(this).addClass("current");
$("#project_image").load(this.href, function(res) {
// This will allow you to see the response from the server without having to dig through requests
// If you don't have a console for some reason, just change this to alert()
console.log(res);
});
e.preventDefault();
});
});

Same JQuery click function for numerous links

I have a page that has multiple links with various attributes (these attributes will be pulled in from a database):
index.php
<html>
<head>
<script type='text/javascript' src='header.js'></script>
</head>
<body>
My_Link_1
My_Link_2
<div id='my_container'> </div>
</body>
</html>
My header.js file has:
$(document).ready(function(){
$('.link_click').click(function(){
$("#my_container").load("classes/class.project.php", {proj: $(this).attr('id')} );
return false;
});
});
class.project.php is pretty simple:
<?php
echo "<div id='project_container'>project = ".$_POST['proj']." : end project</div>";
?>
This loads and passes the ID variable (which actually comes from a database) to class.project.php. It works fine for the first link click (either link will work). Once one link is clicked no other links with this div class will work. It feels like javascript loads the class.porject.php and it will not refresh it into that #my_container div.
I tried running this as suggested by peterpeiguo on the JQuery Fourm, with the alert box for testing wrapped inside .each:
Copy code
$(document).ready(function() {
$('.link_click').each(function() {
$(this).click(function() {
alert($(this).html());
});
});
});
This seems to work fine for the alert box. But when applying it to .load() it does not reload the page with the new passed variable. As a matter of fact, it doesn't even reload the current page. The link performs no function at that point.
The example site can be viewed here: http://nobletech.net/gl/
I looked at the link you posted, and the problem is that when you're doing load you're replacing the elements on the page with new ones, thus the event handlers don't work anymore.
What you really want to do is target the load. Something like:
$("#project_container").load("classes/class.project.php #project_container", {proj: $(this).attr('projid')} );
This only loads stuff into the proper container, leaving the links and other stuff intact.
Ideally, the php script should only return the stuff you need, not the whole page's markup.
BTW- Caching shouldn't be an issue in this case, since .load uses POST if parameters are passed. You only have to worry about ajax caching with GETs
Sounds like the request is getting cached to me.
Try this:
$.ajaxSetup ({
// Disable caching of AJAX responses */
cache: false
});
Sorry but this might be completely wrong but after examining your XHR response I saw that you are sending back html that replaces your existing elements.
So a quick fix would be to also send the following in your XHR response (your php script should output this also):
<script>
$('.link_click').each(function() {
$(this).click(function() {
alert($(this).html());
});
</script>

Adding an anchor to generated URLs

I have tried finding a simialr example and using that to answer my problem, but I can't seem to get it to work, so apologies if this sounds similar to other problems.
Basically, I am using Terminal Four's Site Manager CMS system to build my websites. This tool allows you to generate navigation elements to use through out your site.
I need to add a custom bit of JS to append to these links an anchor.
The links generated are similar to this:
<ul id="tab-menu">
<li>test link, can i rewrite and add an anchor!!!</li>
</ul>
I can edit the css properties of the link, but I can't figure out how to add an anchor.
The JQuery I am using is as follows:
<script type="text/javascript" src="http://jquery.com/src/jquery-latest.pack.js"></script>
<script type="text/javascript">
$(document).ready(function(){
// everything goes here
$("#tab-menu").children("li").each(function() {
$(this).children("a").css({color:"red"});
});
});
</script>
Thanks in advance for any help.
Paddy
sort of duplicate of this:
How to change the href for a hyperlink using jQuery
just copy the old href and add anchor to it and paste that back
var link = $(this).children("a").attr("href");
$(this).children("a").attr("href", link+ "your own stuff");
A nice jQuery-based method is to use the .get(index) method to access the raw DOM element within your each() function. This then gives you access to the JavaScript link object, which has a property called 'hash' that represents the anchor part of a url. So amending your code slightly:
<script type="text/javascript">
$(document).ready(function(){
// everything goes here
$("#tab-menu").children("li").children("a").each(function() {
$(this).css({color:"red"}).get(0).hash = "boom";
});
});
Would change all the links in "#tab_menu li" to red, and attach "#boom" to the end.
Hope this helps!
I can now target the html by using the following:
$(this).children("a").html("it works");
I assumed that:
$(this).children("a").href("something");
would edit the href but I am wrong.
Paddy
I am not sure for the answer, I dint try
$("#tab-menu").children("li").children("a").each(function() {
// $(this).css({color:"red"}).get(0).hash = "boom";
var temp_url = $(this).href +'#an_anchor';//or var temp_url = $(this).attr('href');
$(this).attr('href', temp_url);
});

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