JQuery :: Using Ajax To Retrieve And Update A HTML Input Field With JSON Results From URL
Jan 1, 2012
so, the pseudo code: - on change of input contents, check to see if two input fields are set - if set, update a third field with "loading..." text and a loading gif - use ajax to send data to a url, and get a calculated json response - update the third field with the calculated response
I know I'm getting the correct response, according to firebug: {"pace":"10:00"}
the code:
$('#run_distance').change(function() {
if ($(this).val() != '' && $('#run_time').val() != '')
{
$('#run_pace').val('Calculating Pace…');
[Code].....
how to update the #run_pace input field with the json response.
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May 21, 2011
I am doing a project now i going to use ajax to retrieve coordinate from the json in html and pin the coordinate onto a point on the map using javascript but the problem is i am only able to use one point on the map can tell me what to add in ? or how should i change it with? it will be nice if u can change the code from the below and show me how
Quote:
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Mar 25, 2010
I am trying to use a $.post call in jQuery to check a user's credentials before submitting a form (so I can show errors without reloading the page), but I've run into a problem. I know why it is, because AJAX is not synchronous, but I just can't figure out how to do it.
In my code the script I'm making the call to returns "valid" or "invalid". If the return is "valid", I want to submit the form, if not, show an error message. Here is a simplified version:
$("#my_form").submit( function () {
some_value = "username"
$.post(script_location, {data : some_value}, function (data) {
response = data
[Code]...
This obviously does not work because code is executed quickly one after another and the variable "response" is not yet set when the execution gets to the if statement, since it is set sometime later, asynchronously.
I looked into using functions, callbacks, but nothing seems to work properly, I always run into the same issue. This is probably really simple, i just a complete dunce, please do let me know what is the standard way of doing this properly.
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Jul 11, 2011
Environment is PHP - MYSQL When the user changes the value of a select drop-down, I want to use Ajax and query one table of my database, retrieve three pieces of data, and place the data in three separate text fields in my form. Is there a simple tutorial out there that explains this?
I get the general concept of the separate php file for the query, but I'm pretty much lost.
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Apr 18, 2011
In the code below I am trying to show the echo statement from a php file. The ajax call works when I use the alert(), but I am trying to put it in a div tag but not working.
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Nov 4, 2010
I have troubles with a simple jQuery.ajax-request which looks like this:
jQuery.ajax({
type: "GET",
url: "[URL]",
//url: "[URL]",
data: "",
success: function(data, status) {
$('body').html(data);
},
dataType: "json"
});
I test this with two different url's:
[URL]
[URL]
The first url works and I get json-data in the data-object. The second url gives a "parseerror", and I can't figure out why. As far as I can see (and using a json-validator) the second url returns valid json, so what's wrong?
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Jul 22, 2010
I'm creating a page that calculates a number depending on what value is inputted into a text field. I need to create some javascript that updates this new calculated value and outputs it next to the input field. Anytime the user changes the number, it recalculates the value. My calculation is currently being produced by PHP, however if I need to, I can create javascript as well to recalculate these numbers.
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Aug 15, 2011
I have a web service that accepts application/json but returns HTML to place in a DIV. I am not having any luck configuring the .ajax call so that it both POSTs in a format accepted by the web service and does not attempt to validate the HTML response as JSON.
[Code]...
It would seem that I cannot have anything other than 'json' in the dataType, even though from the docs it appears that this only affects the interpretation of the response, changing it's value to 'html' causes the web service to reject the call. I've also tried a converter but perhaps I'm not using it properly. Is it possible to use jquery to post JSON and get back HTML? What configurations am I missing?
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Sep 11, 2010
I have a html file that I want to load, loop through the json data and for each json entry I want to add a new block of the html and insert the json data into the matching div/class of the html. json looks like this:
{"Super" : [{"Name" : "John Doe", "Age" : "30"}, {"Name" : "Jane Doe", "Age" : "40"}]};
html looks like this:
<div class="Name"></div><div class="Age"></div>
So for each json entry of name/age, I want to insert that into the html, and then add another row, until all json data has been fetched. After this I want to insert all of this into #box, which is just a divthat should contain that html. Looping like this obviously does not work, since I just keep replacing the same html through the loop.
var jsonData = {"Super" : [{"Name" : "John Doe", "Age" : "30"}, {"Name" : "Jane Doe", "Age" : "40"}]};
$.each(json.Super, function() {
$('#box .Name').html(this.Name);
$('#box .Age).html(this.Age);
});
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Dec 9, 2010
I'm using BBC's glow to make an ajax post, its works fine, but I'm having trouble displaying the results, if I use:
It displays the results in a div with all the html escaped.
Does anyone know how I can display the results as html?
Code:
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Mar 24, 2011
Ihave a Json Object n wanna select one row based on id and name
[Code]...
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Apr 3, 2009
I am new to Ajax and have a bit of a gap in my understanding. I have a status monitor that sets a JS function to run every second with setInterval. When the document loads, I will need to get data from the server asynchronously (I wont know the info before hand) and use that data to set id values to find them as nodes and change them later on.
The problem is as I see it, that the callback function I will use to grab the initial data is coming back via a JSON object. The callback function is done with javascript. So, how can I take the JSON data, or converted to javascript data and set my ID values when the document loads? If I change the values dynamically with the DOM, will those values be reliable enough to use as my other recurring functions find them and set their innerHTML properties?
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Sep 6, 2009
What is the best way to server AJAX data and why? JSON, HTML, or XML? Which is best?
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Jul 3, 2011
So I can't for the life of me understand JSON. I've looked through numerous links but nothing. If I have a Database and all I want to pull is:
How do I print that out to an HTML document using JSON. I don't get it. I think it puts it in an array but how does it get there? Do I just print it out like I would a normal javascript array? If this isn't quite the right place to post this I apologize but there wasn't an AJAX section.
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Jan 4, 2012
I am having difficulty displaying a specific key from a json file. I am trying to parse the following json file using query:
[URL]
I am using this type of function to parse the data:
$.each(json.route,function(i,route){
<!--add a paragraph tag to the results div and enter the speficied key-->
$("#results").append('<p>Result: '+ route +'</p>');
Using this I am able to print all the keys from the route but I am not able to print a specific key.
What I want to do is just get the results for the key "fuelUsed" using this method:
$("#results").append('<p>Result: '+ route.fuelUsed+'</p>');
But I never get back any data that way. Am I not specifying my key correctly?
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Dec 1, 2011
what i am trying to do is retrieve a json file from a link on a server and then edit it locally.How can i do this on javascript or ajax?
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Aug 2, 2011
I have a textbox and button in html, and when something is fill in the textbox, i want to pass the value of the textbox to ajax, data: '{"name": theName}', I couldn't seems to get it to work.
Of couse when i use string value, it works just perfectly for example: data: '{"name":
"Joe"}',
HTML Code
<input type="text" id="theName" name="theName" value="" />
<input id="callAjax" type="button" value="Submit" />
<script type="text/javascript" src="Default.js">
</script>
[Code].....
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Jun 7, 2010
I am having a form with two input fields. I want to enter some text in the first input field and then the second field should get the same text. Is there a simple way (maybe a plugin) to do this with jQuery? It would be perfect if I even could output all these input fields values as normal text in <p> or <li> tags.
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Dec 22, 2010
Here is the code i am trying to update the page and display the results in
div section of html using javascript but i am getting an error message.
Error Messge:
Line: 36
char: 1
Error: Object expected
[Code]....
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Feb 10, 2011
Any way to allow a user to click items in a combo box and have its value populate an input field.
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Jun 27, 2010
I need to have a simple text input field on a html page. It needs the users to type in either:
And depending on whats entered this will then take them to the corresponding:
Is this possible with javascript?
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Feb 26, 2009
Can we get the input field value from response text .
Like i have code
contractArchiveConnectionSuccess = function(responseObject) {
alert(responseObject.responseText);
}
i want to show alert here if that input field value exist.but problem is that response text has other data as well so how i differentiate to alert .
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Jun 8, 2011
How to get a number to update realtime on a site? What I'm looking for is used on the following website:
New & Used Cars For Sale - Arnold Clark
The number with the top vehicle search update when a user makes any of the selections in the form. I think I know how to get the number to update via php and mysql queries on the db but how can I get the effect where the number rolls to the newly updated total?
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Nov 7, 2011
I've got this:
Code:
var noteCount = "";
jsonRequest('media.getFiles', params,
function(result) { noteCount = result['totalCount']},
function(exception) { noteCount = "0"},
true
);
The console returns results['totalCount'] with a value of 2 (that's correct).
When I call noteCount for display, it shows nothing. Neither the var set by result or exception.
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Sep 1, 2011
I'm now working on kind of invoice form which in it the user can add as much input field as he wants.
The problem is that after adding a new input field - the content in the other fields is deleted.
Code:
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Oct 26, 2011
I have just started to learn about JQuery and wanted to learn how to retrieve data from an API.
I used the Flickr example provided here [url] and just changed the relevant code to point to the 500px api.
<body>
If I launch the following URL I do get the results properly [url]
Here's a sample of what the result looks like:-
I don't get any results when I run my code page. What am I doing wrong?
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