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Sorry I'm a newbie in web programming. I have a problem to send array from Javascript / JS array to my function in controller and load new view.
I try to use ajax and I can read that array but ajax not load new view, how to do that?
Please tell me the correct way to send javascript array to controller and load new view.
Please help.
Here's my javascript:
$.ajax({
type: "POST",
url: "<?= base_url() ?>index.php/test/coba",
data: {
test: "test"
}
});
and my controller test.php
function coba() {
$data['test'] = $this->input->post('test');
$this->load->view('newview',$data);
}
Please help
AJAX is meant to send or receive data from the client side to the server side. You can't display a view by using an AJAX method, what you could do, however, is receive values that could then be displayed by using Javascript code.
But AJAX is mainly used to give the client the possibility to interact with the database, which doesn't seem to be what you are trying to do, are you sure you need to use AJAX?
If you need to display something depending on user behaviour, without requiring database calls, then Javascript should be all you need. You could add the HTML code with PHP, and hide it, and when the user does the specific action, you can fill what needs to be filled and display your content.
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I am trying to create a web page that can update data automatically calling ajax method. But ajax method need to call by user. There is no process that can always try to find any update of this web page. I want to update data like chat box when Data update on my server. Now I notice that Facebook news feed automatic update. I want to make like this.
Ajax methods don't need to be called by the user; you're free to call them whenever you like from your Javascript code.
One simple possibility would be to make use of Javascript's setTimeout() or setInterval() functions which can run whatever Javascript you like (including Ajax calls) after a set time interval.
Alternatively then you could look at newer technology like WebSockets https://en.wikipedia.org/wiki/WebSocket to help reduce load on the server and browser.
Use setInterval
window.setInterval(function() {
... ajax call ....
}, 2000);
call ajax function automatically
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i am trying to clean up my code..
is there a way to run this code with Ajax or jquery rather than placing the code in the html page itself..thanks in advance
<?php $acct = new acct; echo $acct->accountProfile("accountphone"); ?>
You can have js execute an ajax function (via $.post) on a load event like $( document ).ready(function() {//code}, using something like $("#div").html(data); to populate data into a container.
That said, I don't think that's necessarily more organized than putting it into your HTML code itself. You don't want to process LOGIC too much in your view, but the nature of web development is that it is "messy" (IMO) and that you have to often just insert PHP all over the place, to do singular functions/echos as you seem to be doing.
Yes, you could put all your PHP code in a separated PHP file, eg.
PrintAccount.php
$acct = new acct;
echo $acct->accountProfile("accountphone");
And at your HTML , via AJAX (I'm using ajax with jquery in this example) you "print" php file response in your html
index.html
<div id="accountphone"></div>
<script>
$.ajax({
type: "POST",
url: "PrintAccount.php",
success: function(data){
$("#accountphone").html(data);
}
});
</script>
Now, my personal opinion: This is good? depends, if you have a lot of PHP code is actually good doing this, you could improve it as real services like REST, it'll be awesome for clean code at HTML files. You have also another option, using MVC, so most of code will be written at Controller, and just a few at View. Now, about your given example, with just a small amount of PHP code this is totally unnecessary, you are complicating too much a simple task.
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My question to save time:
What is the simplest way to count clicks of a button, save that value to a Wordpress MySQL db and retrieve that updated total number into a div with Ajax, so the page doesn't need to up reloaded to see it?
I'm just learning how to dive into more UX glory with added mysql db support and Ajax updates with jQuery as the driving force.
My knowledge of working with databases in general is... green to say the least.
I have another question going, but I thought I'd open this up as a more general question. I see lots of tutorials online, but not a lot of elegant, minimal code like I know I've learnt here on SO already.
OP is here: Counting clicks with jQuery and displaying with Ajax
You can bind to the button's click event and then tell your server-side logic to increment the count in the database, like this:
$("#YourButton").click(function() {
$.ajax({
url: '/PathToServerSide',
type: 'POST',
data: {increment: true},
success: function(data) {
alert('Server click count updated!')
}
});
}
Note: Never trust the client-side to tell the server-side what the count value is, but instead send a command (increment) to tell the server-side logic to increment the value in the database.
To display the amount of clicks, use the data returned from the AJAX success callback and the jQuery .html() function, like this:
$('#YourCounter').html('The button has been clicked ' + data + ' times`);
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I want to create a dashboard for a bespoke web service we have so that we can monitor usage on a real-time basis. Something similar to the couchbase dashboard if you have seen that. If not, its basically a line graph that scrolls right to left with time along the bottom of the graph and usage on the y-axis.
To minimise data bandwidth I am assuming there is a way to pass just the changed data to update a graph rather than sending a new image/vector each time. And this would get drawn with a javascript charting library.
What I am unclear on is how to get the data from the server. Is the normal approach to have the javascript code poll the server using AJAX every second (if you are after second by second updates) or is some other method used?
I used PHP for the back end and HTML/JS for the client end.
And does anyone have any examples or links that could be helpful.
For getting the data from the backend, I think you can call it using Ajax, reload each second using setInterval(), making something looks like:
setInterval(function() {
$.ajax({
url: url of your backend server,
type: 'GET',
success: function (data) {
//data returned from the server, use it to draw your chart
}
});
}, 1000); // recall ajax every second
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Is it possible to create a auction site in PHP using AJAX to refresh the page once a user has entered a higher amount of money.
I can handle the PHP side of it okay but I was wondering if AJAX can really be used so that it refreshes often without putting a lot of strain on server resources?
I also plan to use JQuery to implement AJAX as this makes the job a whole lot easier. Anybody have any code examples that you think could be used?
Any help would be appreciated/
Thanks!
var currentHighestBid=0;
setTimeOut(getHighestBid,5000); //5000ms wait before polling for a better price
function getHighestBid()
{
$.ajax(
url: url, // ur php end point,
type: "GET"
data: {} //json data if you want to send anything as a querystring parameter to your servre
dataType:"json"
success: function(response)
{
if(response.currentMaxBid>currentHighestBid)
{
currentHighestBid=response.currentMaxBid;
//code to update your markup
}
}
});
Hope that made sense..
Read abt json in php
Polling would work as "zzzz" mentioned. Comet (Push based instead of Polling) would be a nicer/better solution for this use case. However PHP is not really good at this with high traffic sites. Node.JS with Socket.IO would be a good solution for you :)