I am trying to pass an id value to a php script with jquery.
So, I was trying to create a link:
Superman
and when this link is clicked, I would like jquery to grab the id value and place it in the php script or php grabs the id? im not sure the best way.
I want the id value so it can be placed in a mysql query like this:
SELECT * FROM hero_db WHERE category="superman"
So, i get the id and place it in for the category as seen above.
I have trying many things, but am unfamiliar with jquery but trying to learn as much as I can.
Thank you for any help on this.
It sounds like you want to load HTML when the link is clicked. If so you need markup something like this:
Superman
<div id="superman_data">
</div>
with Javascript:
$("a.loaddata").click(function() {
$("#" + this.id + "_data").load('/loaddata.php', {id: this.id});
return false;
});
What this does is binds an event listener to all anchors with a class of "loaddata". When it's clicked on, the ID is passed to loaddata.php. That script should return HTML. It is loaded into the named div.
There are various jQuery Ajax methods. Which one you use depends on what you want to achieve.
$.post('http://PHP_SCRIPT_URL', {id: $('a.yourlik').attr('id')});
Related
Simply, I have an <a> tag having values(ID) which will be posted to the same page in clicking,
I wanted to load data into the table based on the ID provided by the post method. On the other hand I am having a clock which is rested again and again when fired a post method.
I simply wanted to do the same via jQuery.
In short I wanted to Implement ajax using jQuery
Also I am using database MySQL, with PHP scripting
Any sort help will be appreciated.
<a class="D" href="?ID=<?php echo $rows[0]; ?>" onclick="">Question<?php echo $QNo; ?></a>
I wanted the same above and get ID for searching relevant data against the ID.
I might be wrong here, but you basically want to query a PHP page based on an ID and display relevant content in a div?
To make an AJAX call, setup a PHP page that will query your database and in turn return HTML data which you can then display in a DOM element.
A very simple example of this would be:
HTML
Load table 1
Load table 2
<div id="contentToPopulate"></div>
jQuery:
$('a.linkToLoadTable').click(function(){
var pageId = $(this).data('tableId')
$.ajax({
url: 'loadTable.php?id='+pageId
}).done(function(data) {
$('#contentToPopulate').html(data)
});
})
I have the below code, and I'm not sure if it even works. Basically, I want to do a like system, whereby when I click on the link, it adds a +1 to the user's likes.
I've tried so hard to read up but I just don't get anything, and I found a code similar below.
When I clicked on the link, it does process my insert.php page, but I don't know how to get the variable values...
What should I do? I'm not sure if the code structure below is correct...
Thanks!
<script>
function insertSalary()
{
var salary = $("#salary").val();
$.post('insert.php', {salary: salary}, function(data)
{
$("#current-salary").html(data);
});
}
</script>
<div id="current-salary">
<a id="salary" onClick="insertSalary();">+1</a>
</div>
The variable will be in your php script as $_POST['salary']
The value of salary is passed as part of the post method in jquery.
So you can do:
$.post('script.php', {salary: 100}, function(data){...});
and this will pass the value 100 to your php script as the salary value.
In php the $_POST and $_GET hashes contain the data that you pass with a given request. In jquery $.post, $.get $.ajax create requests and take data hashes to build the data you want to pass with the request.
While this may work, I would recommend separating your logic from your website by putting the javascript in an external file and then link your HTML page to it.
I would also advise against declarative event binding which you have done by specifying onClick="insertSalary()".
jQuery provides a method to pro-grammatically assign functions to events using the on method. So for your code, you could use:
$('#current-salary').on('click', insertSalary());
so, I have read just about every question on this subject, but the solutions don't work for my project, it seems that when I change the dropdown, it does the first event, but when I change to a different element it doesn't do anything else, but when I do this with an alert message it changes every time.
here is what I have to demonstrate what I mean
I tried .post it works great until I add php and all the dynamic functions, is it because I used $('#updateDiv').html(url);
I also hide and showed the div based on the change of the dropdown, but all that did was hid and show the div, I want the div to show the content based on a list of categories.
the PHP side will be dynamic, but if I do .html() none of the php renders properly.
http://fiddle.jshell.net/LrxUS/
$.post(url, function(data) {
$("#updateDiv").html(data);
});
As per the fiddle, you have specified
var mydropdown = $('#mydropdown');
but in the change function, you have specified $(mydropdown), either define only id in the variable or the object. Like,
var mydropdown = '#mydropdown';
$(mydropdown).change(function() {}
After that use $.ajax to get the dynamic content.
Ok, lets make it the simplest so that there is no room for mistake in the client side script. Use $.load method defined here.
AS:
$("#updateDiv").load(url);
And don't forget to check what your firebug, chrome inspector or fiddler says about your request in case if you don't get the required result.
I am trying to expand on some code written by someone else, but I am having trouble using one of the javascript variables. If I set it in the title of a div or something similar like so:
$("#test12").attr("title" , ccode);
then it works fine and the title of the div is 'CA', which it should be. But if I try to put it into the text area of the div, then it tries to run a function or something but I can't see where it's doing it.
Is there a way I can convert it to simple text and stop it from running any functions?
Thanks for any help
Edit:
This is all of the code I can see at the moment:
<script>
//<!--
function loadForeignOffices(ccode){
//load window with details...
$('#iframe_3').attr("src", "<?php echo $html->url("/", true); ?>erc/maps/contacts/"+ccode);
$("#test12").attr("title" , ccode);
}
//-->
</script>
Basically what I'm trying to do is use the ccode variable because I want to display CA on the screen, but when I try to do that it seems to run some other function and fails, and doesnt show CA.
You may need to brush up on your jQuery dot-operators:
.load() is an ajax call that will load the contents of () into the selected element. In one of your comments you mention you are trying to do this $("#test12").load(ccode); which is inherently silly, if ccode is the string "CA"
.attr() will change the attributes of the selected element. If you are trying to display "CA", $("#test12").attr("title" , ccode); this will clearly not accomplish that -- As "CA" is added to the title attribute. As in <div id="test12" title="CA"></div>
Perhaps what you are looking for is .html() which inserts the string into the selected element. Or even .innerText()
Why don't you spend some time reading the jQuery documentation. A little bit goes a long way!
Keep in mind your PHP code is executing first on the server, then your javascript.
Here's a JS Fiddle as a start: http://jsfiddle.net/QsFJ4/3/
I have a page I am constructing and I need to pass in the values of the option dropdowns to the next page. The problem is that these dropdowns are not in a form.
http://posnation.com/test/pre_config/pre_config_step_2.html
Basically what i need to pass to the next page is that when i click "Proceed To Next Step" I need to pass the value of the type of field like "restaurant" and the number of stations "2" if the user selects restaurant and 2.
HTML:
<a id="proceed" href="foo.html">Proceed!</a>
JS:
$('#proceed').click(function() {
location.href = this.href +'?someVal='+ escape($('#my_select').val());
return false;
});
Working example that executes a formless google search: http://jsfiddle.net/CKcbU/
You basically just add what you want to the query string with javascript.
But really, if at all possible, you should use a form with method="get" which pretty much does this for you without any JavaScript at all.
Use a query string.
http://posnation.com/test/pre_config/pre_config_step_2.html?restaurant=The+Eatery&stations=2
In other words, pass them as part of the URL when calling the next page. The next page will be responsible for reading the query string and extracting the values out.
http://en.wikipedia.org/wiki/Query_string
I do not know what you are using to code in so I cannot be detailed regarding the mechanics of constructing the URL or parsing out the values from the query string on the receiving page.
Here is an article on doing it using JavaScript:
http://javascript.about.com/library/blqs.htm
You can use JavaScript for the same. Assign a onclick event with button of proceed and call a function. In this function use:
windows.location=url?rest=valuerest&opt=valueopt
I am not sure what you are working with, but with almost any framework that I know of you can pass a parameter as part of the url.
These would work fine.
http://posnation.com/test/pre_config/step_2
http://posnation.com/test/pre_config/step_3
Then, just grab the parameter and react accordingly.