So that I can send those data using perl/php or any other programmatically.
Say I've a website with a combo box containing 100 cities submitting each city would get me the list of service centers in the city.
So I want to use a perl code where I'd loop all the cities and capture all the results, format them suitably in html for use in my website.
Doing all these using jquery etc will be manual. Also using jquery I'll not be able to catch response in easy way and save it on the hard disk as html file.
im not sure who is sending it where from your description. But i guess that you have an HTML form which sends those data to some PHP script . you specify the PHP in and you catch them on server side using $_POST["variable"]
if you want to send them somewhere else from your php script, use curl http://cz.php.net/manual/en/book.curl.php
This did the trick, I had to learn jquery finally:
var chk = [];
$("#splocator2 #stateid option").each(function() {
chk.push($(this).val());
});
alert(chk.length);
for (i = 0; i < chk.length; ++i){
$("#splocator2").attr("target", "_blank");
$("#stateid option:eq(0)").attr("selected", "selected");
$("#stateid option:eq(0)").attr("value", chk[i]);
$("#splocator2").submit();
}
JavaScript running on a page can not access variables POST'd to it AFAIK.
You may be thinking of sending an XHR to your server side code.
You may use the serialize() method:
$(function() {
$("#myForm").submit(function() {
alert($(this).serialize());
// No thanks I'm gonna use my own post request
// code here!
return false;
});
});
Example.
Related
Okay, so I have this function in PHP that gets an attribute and returns an array. Something like this:
function getProvinces($countryID){
return arrayWithProvinces($countryID);}
Everytime the parent select changes, the function getProvinces() should be executed with the new ID and the arrayWithProvince should be included as options in the child select.
I'm using jquery to handle the events, as I found somewhere. I need to do something like this.
$("#selectCountry").change(function() {
var parent = $(this).val(); //get option value from parent
var prov = <?php echo json_encode($pagina->getProvinces( <PARENT> )); ?>;
list(prov);
My problem is that I don't know how to tell the getProvinces($countryID) php function which is the new value of the parent.
Thanks in advance.
You should use javascript for that in order to refresh part of your page with dynamic content.Below is an example using jquery's ajax function.When the select with id #parent_select changes you call your php script and you append the returned data (the html of the child select in the example) in a div you want.
Javascript part would be something like this:
$("#parent_select").change(function() {
$.ajax({
url: "your_script.php?cid="+$(this).val(),
success: function(html){
$("#child_select_container").append(html);
}
});
});
And your_script.php code would look something like :
<?php
function getProvinces($countryID){
return arrayWithProvinces($countryID);}
$countryID=(int)$_GET['cid'];
$provinces=getProvinces($countryID);
echo '<select id="child_select">';
foreach($provinces as $key=>$province){
echo '<option id="'.$key.'">'.$province.'</option>';
}
echo '</select>;
I havent tested the example.It is just a basic how to example.You should be able to work your way from here.But if you have any problems let me know.
As far as I know, you cannot execute the function without reloading entire page (I mean php should recompile it and pass it to the client).
You should use only JavaScript for that purpose. Store you arraylist in JS code, and validate it once upon form submission (just to be sure).
You need to make an Ajax request to the server.
Look at it this way: Your Javascript/jQuery is running on the client side (web browser) and you PHP is running on your web server.
So to communicate between the browser(jQuery) and the server(PHP) you need to make a Ajax request.
jQuery has a ajax function you could use, your best bet is to do some research on the subject as Ajax is something you will use all the time and understanding how it works is crucial.
I have this jQuery code that gets data from my form. I used a console statement to see the value. However I want to pass the data to my Node application so that I can insert into a database.
$(function() {
$('#kiosk_signin').submit(function() {
var data = $('#kiosk_signin :input').serializeArray();
console.log(data[0]);
});
});
Please let me know what I need to do.
Assuming you are using express, posting this to your route.., and inserting into the DB..
You would do something like this in your routes..
router.post('/whereever', function(req,res,next(){
///assuming kiosk_signin is the name of an input field
///and the action is ='/whereever' method='post'
var data = req.body.kiosk_signin
console.log('if you want to log it', data)
db.insert({propert: data}).then(function(){
res.redirect('/home')
})
})
I don't use JQuery for submitting forms if I have a full-stack app, just because I intend on sending it directly to the server. Hopefully that helps..
I'm trying to return the header row of a Google spreadsheet using doGet() in a Google App Script that's running as a WebApp. I'm using a HTML form to send the GET request to the WebApp and it's all working except I don't know how to return the headers to my javascript. I'll post my code:
HTML:
<form id="getForm" method="get" action="My URL for WebApp">
<label for="sheetGetID">SheetID</label>
<input type="text" name="sheetGetID" id="sheetGetID" value="">
<button class="ui-btn" onclick='submitGET()'>Submit</button>
</form>
Javascript:
function submitGET() {
var headers = $("getForm").submit();
alert(headers);
}
Google App Script:
function doGet(e) {
//Trying To: Get headers from sheetID and then return to app, then have correct labels for the inputs, then use POST to post.
var ss = SpreadsheetApp.openById(ScriptProperties.getProperty('active'));
var sheet = ss.getSheetByName(e.parameter["sheetGetID"]);
//Return the first 3 cells, A1:C1,
var headers = sheet.getRange(1,1,1,sheet.getLastColumn()).getValues()[0];
return ContentService.createTextOutput(JSON.stringify(headers))
.setMimeType(ContentService.MimeType.JSON);
}
I'm getting a JSON object returned but it's just a text output. My question is how would/could I get the JSON returned and stored as the headers variable?
The return of doGet method must be an HTML.
Build another html page and use the call HtmlService.createTemplateFromFile('newPag.html').evaluate()
Inside your page use the tags and put your server side code manipulating the json object. This way you will create a good look and feel and a good maintanable code.
I got this to work a while ago, I forgot to post the answer just in case anyone else needed it.
You need to output it as a JSON object like the API demo. You also need to append "?prefix=?" to the url when you're doing a $.getJSON() call. The prefix part is to tell the JQuery that it is a JSON object you're receiving.
If anyone has troubles with this just comment and this and I'll post all the code I used.
So on your client end, I'm using JQuery Mobile, I'm not sure how to do it without it, you would do something like:
sheetID = $("#sheetGetID").val();
$.getJSON("https://script.google.com/macros/s/YOUR_KEY_GOES_HERE/exec?prefix=?",
{ sheetGetID: sheetID},
function(results) {
var fields = results.split(",");
//Do something with fields
}
);
}
Where #sheetGetID is the textbox where the user can enter the sheet id for headers.
Note the ?prefix=? appended to the URL, that part is for JQuery to know it's receiving JSON. That part is necessary. The URL is your deployed WebApp.
On the Google App Script side, ie Server side, you'd have something like:
function doGet(request) {
var ss = SpreadsheetApp.openById(ScriptProperties.getProperty('active'));
var sheet = ss.getSheetByName(request.parameter["sheetGetID"]);
//Return the first 3 cells, A1:C1,
var headers = sheet.getRange(1,1,1,sheet.getLastColumn()).getValues()[0];
var result = headers.join();
var content = request.parameters.prefix + '(' +JSON.stringify(result) + ')';
return ContentService.createTextOutput(content)
.setMimeType(ContentService.MimeType.JSON);
}
If you have any questions on how the spreadsheet part works theres plenty of documentation on Google's API's. doGet() is called when you use the $.getJSON(), the return from the G.A.S. needs to be JSON. Most of this is covered in the documentation Google has, some of it I found watching Google Developers Live on youtube. If you are trying to do more stuff I highly recommend checking those sources out.
If you have any more questions about what's being called or parameters you can find it easily enough on Google.
I am a real noob when it comes to javascript/ajax, so any help will be very appreciated.
In reference to this question:
Updating a MySql database using PHP via an onClick javascript function
But mainly concerned with the answer left by Phill Sacre. I am wondering if someone could elaborate on how we are(if we can?) passing values/data through his example, using jquery.
The code example left by him is as follows:
function updateScore(answer, correct) {
if (answer == correct) {
$.post('updatescore.php');
}
}
...
<a onclick="updateScore(this, correct)" ...> </a>
Say for example, we are wanting to pass any number of values to the database with php, could someone give me a snippet example of what is required in the javascript function? Or elaborate on what is posted above please?
Thanks again all.
The simplest example I can think of is this. Make your AJAX call in your if block like this:
$.get('updatescore.php', {'score': '222'}, function(d) {
alert('Hello from PHP: ' + d);
});
On your "updatescore.php" script, just do that: update the score. And return a plain text stating wether the update operation was successful or not.
Good luck.
P.S.: You could also use POST instead of GET.
What you would do is on the php server side have a page lets say its update.php. This page will be visited by your javascript in an Ajax request, take the request and put it in a database.
The php might look something like this:
<?php
mysql_connect(...)
mysql_query("INSERT INTO table
(score) VALUES('$_GET["score"]') ")
Your javascript would simply preform an ajax request on update.php and send it the variables as get value "score".
Phil is not passing any values to the script. He's simply sending a request to the script which most likely contains logic to 'update' the score. A savvy person taking his test though could simply look at the HTML source and see the answer by checking to see what the anchor is doing.
To further nitpick about his solution, a set of radio buttons should be used, and within the form, a button or some sort of clickable element should be used to send the values to the server via an ajax request, and the values sent to the server can be analyzed and the status of the answer sent back to the page.
Since you're using jQuery, the code can be made unobtrusive as seen in the following example:
$('#submit_answer').click(function() {
var answer = 'blah' // With blah being the value of the radio button
$.get('updatescore.php',
{'value': answer},
function(d) {
alert('Your answer is: ' + d') // Where d is the string 'incorrect' or 'correct'
}
});
Enjoy.
I am wondering how to capture all links on a page using jQuery. The idea being similar to Facebook. In Facebook, if you click on a link it captures the link and loads the same link using ajax. Only when you open a link in new tab etc. will it load the page using regular call.
Any clue on how to achieve such kind of functionality? Am sure capturing links should not be a problem, but what about capture form submissions and then submitting the entire data via ajax and then displaying the results?
Is there any plugin which already exists?
Thank you for your time.
Alec,
You can definitely do this.
I have a form that is handled in just this way. It uses the jquery form plugin kgiannakakis mentioned above. Example javascript below shows how it might work.
$("form").ajaxForm({
beforeSubmit: function(){
//optional: startup a throbber to indicate form is being processed
var _valid = true;
var _msg = '';
//optional: validation code goes here. Example below checks all input
//elements with rel attribute set to required to make sure they are not empty
$(":input [rel='required']").each(function(i){
if (this.value == '') {
_valid = false;
_msg += this.name + " may not be empty.\n";
$(this).addClass("error");
}
});
alert(_msg);
return _valid;
},
success: function(response){
//success here means that the HTTP response code indicated success
//process response: example assumes JSON response
$("body").prepend('<div id="message" class="' + response.status + '"></div>');
$("#message").text(response.message).fadeIn("slow", function(){
$(this).fadeOut("slow").remove();
});
}
});
Form plug-in can transform a regular form to an Ajax one:
$("#myForm").ajaxForm(
{beforeSubmit: validate, success: showResponse} );
It would be difficult to do what you want however for an arbitrary form. What if the form uses validation or is submitted by Ajax to begin with? The same thing applies for links. What if there are some javascript navigations scripts (window.location = Url)? If you don't have full control of the page, it will be difficult to do what you want.
Usually pages like facebook, do each event and each form separately coded, as the server-side files are usually set for each single operation / group of operations. I doubt there will be a clean way to convert a page with just a plug-in. And if it is, I see a lot of overhead.
You can do it by hand, but again that's abuse of Ajax. This isn't flash, and with using ajax for all server communications you run into a lot of problems.
Lack of history tracking.
Watching out for concurrent events and the results of thereof.
Communicating to the user that the page is changing.
Users with javascript turned off.
And much more...