So I am relatively new to JavaScript but I have experience with programming. I have this code which allows the user to define how many addresses they would like to enter so then I can query google maps and find the geographic center. The problem with this is that it looks very unprofessional in the sense that they have to enter the number of fields on one page and then they are prompted with that many boxes on the next page. Is there any way to make only one form(with all the parameters I require for one entry) and then after they click submit, I append it to an array and then when they decide they have enough addresses they hit the final submit so then I can process the data using a PHP call? Any help would be great, but I am new to this so I might need more spelt out explanations, sorry. Thanks again!
TL;DR: I want to create a single entry field which when submit is clicked, the page does not refresh or redirect to a new page and appends the data entry to an array. From there the user can enter a new input and this input would also be appended to the array until the user has decided no more inputs are necessary at which point they would click the final submit allowing me to process the data.
Here is the code I have so far:
<!DOCTYPE html>
<html class="no-js" lang="en">
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script>
$(function(){
var c = 0;
$("#button1").click(function(){
c = $("#inputs").val();
$("#mydiv").html("");
for(i=0;i<c;i++){
$("#mydiv").append('<input type="text" id="data'+i+'" name="data'+i+'" /><br/>');
}
});
$("#button2").click(function(){
$.post("getdata.php",$("#form1").serialize(),function(data){
});
});
});
</script>
</head>
<body>
<form id="form1">
Type the number of inputs:
<input type="text" id="inputs" name="inputs" />
<input type="button" id="button1" value="Create" />
<div id="mydiv"></div>
<input type="button" id ="button2" value="Send" />
</form>
</body>
</html>
getdata.php
<?php
for( $i=0; $i<$_POST["inputs"] ; $i++){
echo $_POST["data".$i]."\n";
}
?>
Here is code:
EDIT: I rewrite the code, so you can also delete each address
$(document).ready(function(){
$("#add-address").click(function(e){
e.preventDefault();
var numberOfAddresses = $("#form1").find("input[name^='data[address]']").length;
var label = '<label for="data[address][' + numberOfAddresses + ']">Address ' + (numberOfAddresses + 1) + '</label> ';
var input = '<input type="text" name="data[address][' + numberOfAddresses + ']" id="data[address][' + numberOfAddresses + ']" />';
var removeButton = '<button class="remove-address">Remove</button>';
var html = "<div class='address'>" + label + input + removeButton + "</div>";
$("#form1").find("#add-address").before(html);
});
});
$(document).on("click", ".remove-address",function(e){
e.preventDefault();
$(this).parents(".address").remove();
//update labels
$("#form1").find("label[for^='data[address]']").each(function(){
$(this).html("Address " + ($(this).parents('.address').index() + 1));
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form id="form1" method="post">
<div class="address">
<label for="data[address][0]">Address 1</label>
<input type="text" name="data[address][0]" id="data[address][0]" />
</div>
<button id="add-address">Add address</button>
<br />
<input type="submit" value="Submit" />
</form>
After form submit you can loop through addresses like this:
foreach ($_POST['data']['address'] as $address){
...your code
}
Hope this help! :)
Normally how I do this kind of stuff is to provide a user ability to add many input fields at client level and send them all in one array when submitting the form. That is more professional I believe. Try this JSFiddle to see what I mean.
<input type="text" name="address[]" />
if you want to POST dynamic value in a form you can do it like this:
<input type="text" name="adress[]" />
so in your case you could add new fields with javascript or jquery with the same name name="adress[]".
and in your PHP you get an array:
$adresses= $_POST['adress'];
foreach ($adresses as $adress) {
echo $adress;
}
FIDDLE DEMO
To process an array of inputs you can use the following convention:
HTML: simply add square brackets to the name attribute
<input type="text" id="data'+i+'" name="data[]" />
PHP: Post returns an array
for( $i=0; $i<$_POST["data"] ; $i++){
echo $_POST["data"][$i]."\n";
}
JAVASCRIPT: $("#form1").serialize() will retrieve all the inputs data as name=value pairs even the inputs that are added dynamically. There's no need to keep an array you can just process all of them at the end.
You don't need to create an array, $_POST is actually doing it all for you already.
So I suggest you do the following: using javascript (or jQuery), keep the button clicks, but make sure the form submission is prevented (using preventDefault on the form) [EDIT: You actually won't need this, as if the buttons are just buttons, no submit inputs, the form will not submit anyway], and just make sure you append another element every time they click a plus button or something; make sure you increment the name attributes of each input element that gets created.
When the user then creates submit, use submit the form via js, then on your getdata.php you can simply loop through all the values and use them that way you want. You will even be able to know the exact number by calculating the number of times a new input element has been added to the form.
I'll try to write up something for you in a minute, but if I was clear enough, you should be able to do that too.
EDITED: So here is what I've come up with; give it a try and see if this is something for you.
This is how the form would look like:
<form id="form1" name="myform" method="post" action="getdata.php">
Enter address 1: <input type="text" name="address-1" /> <input type="button" value="More" onclick="createNew()" />
<div id="mydiv"></div>
<input type="submit" value="Send" />
</form>
And this would be the js code:
var i = 2;
function createNew() {
$("#mydiv").append('Enter address ' + i +': <input type="text" name="address-' + i +'" /> <input type="button" value="More" onclick="createNew()" /><br />');
i++;
}
...and then getdata.php:
foreach ($_POST as $key => $value) {
echo 'The value for '.$key.' is: '.$value.'<br />';
}
here is a fiddle demo
Related
I'm trying to prep forms with multiple (dynamic) inputs to insert correctly via ajax.
Currently, using my php loop, I have 4 div/forms. Each form has a starting input, and upon clicking the moreItems_add button, it dynamically adds another input, up to 10 per form/div.
This works fine. But I added a variable and console.log to log the value of my hidden input though, which should be getting an ID (<?php echo $ticker['ticker'] ?>) for each form, but it's currently only logging '1'. So when I clicked the button in the first form it looked right, but when I click the others, it's still 1. I think this is because I don't have a unique ID on the hidden input?
How can I change the way I'm keeping track of the hidden input so that I can make an ajax call that will only make an insert on the inputs of the given form WITH the correct ticker ID?
<?php foreach($tickerDisplays as $key => $ticker):?>
<form id="Items" method="post">
<label id="ItemLabel">Item 1: </label>
<input type="text" name="Items[]"><br/>
<button type="button" class="moreItems_add">+</button>
<input type="hidden" name="tickerID" id="tickerID" value="<?php echo $ticker['ticker'] ?>">
<input type="submit" name="saveTickerItems" value="Save Ticker Items">
</form>
<?php endforeach;?>
<script type="text/javascript">
$("button.moreItems_add").on("click", function(e) {
var tickerID = $('#tickerID').val();
var numItems = $("input[type='text']", $(this).closest("form")).length;
if (numItems < 10) {
var html = '<label class="ItemLabel">Item ' + (numItems + 1) + ': </label>';
html += '<input type="text" name="Items[]"/><br/>';
$(this).before(html);
console.log(tickerID);
}
});
</script>
To generate a unique id attribute you should append your ticker value from php to... the id attribute. Or if not the ticker value, at least something that makes it unique. But you don't really need to.
Since all your elements are wrapped in a form tag and are at the same level, you can find to which ticker corresponds the clicked button by finding the hidden input among its siblings:
var tickerID = $(this).siblings('input[name="tickerID"]').val();
function js() {
document.getElementById("example").innerHTML = document.getElementById("example").innerHTML+"<input type=\"text\" name=\"name\" />";
}
<div id="example">
<input type="text" name="name[]" />
</div>
<button type="button" onclick="js();">Click</button>
I have a form, which need variable number of input types.
<form action="" method="">
[...]
<div id="mezok">
<div id="input_id">
<input type="text" name="name" />
</div>
</div>
[...]
</form>
I add and remove further inputs (along with their divs!) via an ajax call. Javascript calls a php which generates a new input_id div, and then concatenates to the rest of the div id="mezok". Adding and removing inputs are fine as long as everything is empty. However, when I add a new div when there is something in the input, it clears the rest of the inputs.
document.getElementById("mezok").innerHTML = document.getElementById("mezok").innerHTML+http.responseText;
document.getElementById("mezok").innerHTML += http.responseText;
document.getElementById("mezok").innerHTML.concat(http.responseText);
(The last one is not working at all...)
TL;DR: concat input to input, values of inputs disappear. :'(
Don't use innerHTML. What you are doing is redrawing the entire container contents, deleting existent inputs and creating new inputs each time. My experience says that when you are accessing innerHTML, recheck your code as you are probably doing something weird.
What you have to do is to create inputs individually and append them to the container, without touching the rest of the inputs. Is like appending elements to an array.
This way the code is more self-explanatory, and better, is way more performant:
function js() {
var input = document.createElement("input"); // Create a new input element. Is like "<input>".
input.setAttribute("type", "text"); // Set the 'type' attribute to 'text'. Is like having '<input type="text">'
input.setAttribute("name", "name[]"); // Set the 'name' attribute to 'name[]'. Is like having '<input name="name[]">' but because you already have set the type, now is like having '<input type="text" name="name[]">'
document.getElementById("example").appendChild(input); // Push it to the container
}
<div id="example">
<input type="text" name="name[]" />
</div>
<button type="button" onclick="js();">Click</button>
The code below could be a solution for you. In this way you're not going to overwrite the existing inputs with the associated values while you're adding new inputs.
function js() {
var inputElementToAppend = document.createElement('input');
inputElementToAppend.innerHTML = "<input type=\"text\" name=\"name\" />";
document.getElementById("example").appendChild(inputElementToAppend.firstChild);
}
<div id="example">
<input type="text" name="name[]" />
</div>
<button type="button" onclick="js();">Click</button>
Let me know if this worked for you.
Following working fine for me.
<button onclick="myFunction()">Try it</button>
<p id="demo">ABC</p>
<script>
function myFunction() {
var x = document.getElementById("myP").innerHTML;
document.getElementById("demo").innerHTML += `<input type=\"text\" name=\"name\" />`;
}
<script>
I would recommend to use appendChild and removeChild instead of innerHTML
I want the script to do the following:
On page load, read a text file with a number (just one line)
Increment the number by 1
Insert the number in an <input> box of the form
Once <form> is submitted, write the number to the text file
When the form gets loaded again, it will rerun the code and the number will increment by 1. This is basically to pre-populate a field with a unique and progressive number prior to form submission.
I am currently using jQuery, PHP and of course HTML:
HTML:
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js">
$.get("http://www.domain.com/tools/formdata.txt");
function test(){
$.get('http://www.domain.com/tools/formdata.txt', function(data){
x = data++;
});
}
</script>
</head>
<body onload="test()"/>
<form action="save_json.php" method="post">
Contract: <input type="number" name="contract" id="contract" value="x" /><br />
<input type="submit" id="submit" value="Invia" />
</form>
</body>
</html>
PHP
<?php
if(isset($_POST['contract'])) {
// if form fields are empty, outputs message, else, gets their data
if(empty($_POST['contract'])) {
echo 'All fields are required';
}
else {
// adds form data into an array
$formdata = $_POST['contract'];
if(file_put_contents('/var/www/domain/tools/formdata.txt', $formdata)) echo 'Data successfully saved';
else echo 'Unable to save data, try again or contact IT';
}
}
else echo 'Form fields not submitted';
?>
First: I recommend that instead of javascript, you do this with PHP file_get_contents('formdata.txt') at the start of your file, and then you echo it in. That way, the value will be there on load, rather than having to wait for the HTML to render and the javascript to run. Also, it is a much better practice and will let you do a lot more things if you choose to expand the page.
However, here's the solution to the issue presented:
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script>
var x;
function test(){
$.get('file.txt', function(data){
console.log('data',data);
var x = ++data;
console.log('x',x);
$('#contract').val(x);
});
}
</script>
</head>
<body onload="test()"/>
<form action="aoeu.php" method="post">
Contract: <input type="number" name="contract" id="contract" /><br />
<input type="submit" id="submit" value="Invia" />
</form>
</body>
</html>
The things to note:
Close off your <script> tag including the jquery library, then open another one after it.
No need to do the first $.get() you have - save it for the function.
var x = data++; - this increments data AFTER its value has been assigned to x. So, it will never increase. Do ++data instead, and it increments before.
You need to place it somewhere afterwards. How you had the input (value='x') is just trying to put the character "x" into the input. Use javascript to edit the functions value, as in my example.
Your PHP works fine.
On my site I have a main search (powered by Google, placed throughout the site) and I have now created a second search (on its own page, which searches my DB for images based on user input text) which is a totally separate search to the google one.
What I want to do -
I want both Search forms to share a single text input field, but allow the user to choose which search to use (Google or Images Only) via radiobutton.
So we'd have:
[search input field][go] (o)Use Google (o)Image Search only
I'm no coder but can hack enough to just about get by, it just takes me a day or two to figure out and get working.
What I need and would save me a great deal of time, as I'm stumped on how to proceed with this or if it is even possible! If someone could tell me A) If it's possible, and B) A few pointers if it is. For instance I'm guessing it will probably need a bit of JavaScript to make it possible?
Any pointers would be appreciated, then I can see what I can do.
All the best,
Chris
// My Stand-alone Image Search Page ////////////////////////////////
<form method="post" action="imagesearch?go" id="search-form">
<input type="text" name="name">
<input type="submit" name="submit" value="Search">
</form>
// code for above form //
if(isset($_POST['submit'])){
if(isset($_GET['go'])){
if(preg_match("/^[ a-zA-Z]+/", $_POST['name'])){
$name=$_POST['name'];
$sql="SELECT ID FROM ImageTable WHERE Name LIKE '%" . $name . "%' Order by Date Desc LIMIT 50";
//-run the query against the mysql query function
$result=mysql_query($sql);
// Create while loop and loop through result set//
$content .= ' <p><div id="wrapper">';
while($row=mysql_fetch_array($result)){
$id=$row['ID'];
$img = new Image($id);
// Format results//
$content .= '<div id="imgrt"><img src="/img/M/'.$img->ID.'.jpg" class="searchimg"><br>'.$img->Name.'';
$content .= '</div>';
}
$content .= '';$content .= '</div>';
}
else{
$content .= ' <p>Please enter a search query</p>';
}
}
}
// End of Stand-alone image search page /////////////////////////
---------------------------------------------------------------------------
// My sites main Google powered Search
<form action="http://www.example.com/gsresults" id="cse-search-box" class="searchmain">
<input type="hidden" name="cx" value="partner-pub-XXXXXXXXXXXXXXX" />
<input type="hidden" name="cof" value="FORID:XX" />
<input type="hidden" name="ie" value="UTF-8" />
<input type="text" name="q" class="mainsearch">
<input type="submit" name="sa" value="Go" class="mainsearchbutton"/>
</form>
<script type="text/javascript" src="http://www.google.com/coop/cse/brand?form=cse-search-box&lang="></script>
OK so here we go. If you plonk this in an empty html file you can see it in action (Tried to make a jsfiddle but didnt work for some reason). What this does is set an "active" id on the selected combo option, and when you click the submit button it grabs the value of the combo option with that id, and goes to the page of that value. so if you click google and then the button you go to google.html, and same goes for image, image.html. If you want some more specifics you can ask, but thats the main logic there.
<script>
function replaceActive(obj) {
var activeElm = document.getElementById("active");
activeElm.id = activeElm.id.replace("active", "");
obj.id = "active";
}
function formFunction(obj) {
obj.action = document.getElementById("active").value + ".html";
}
</script>
<form action="#" onsubmit="return formFunction(this);" method="post">
<input type="text" />
<select>
<option value="google" id="active" onclick="replaceActive(this);">Google</option>
<option value="image" onclick="replaceActive(this);">Images</option>
</select>
<input type="submit" />
</form>
Basically you can change that "formFunction()" function's code and and use "document.getElementById("active").value" to do what ever you wanted to do.
I have a little bit complicated situation with codes but I made an easy example so that It is easier for you to understand what I actually need.
HTML:
<html>
<body>
<input type="button" value="Increase" name="increase" id="increase"></input>
<input type="button" value="Submit" name="submit" id="submit"></input>
</body>
</html>
Javascript:
$(document).ready(function() {
$count = 1;
$('input').click(function() {
$count++;
});
});
And the idea of all this web-page:
1)Click few times on button "Increase";
2)The javascript variable $count increases each time You clicked on that button;
3)When You click button "Submit", it makes php loop that repeats $count times and each repeating time it makes new record in some database table. Here is the example of possible php for loop:
for($i=1; $i<=$count; $i++) {
//Here makes new record in some database table. For example, it makes some tables rows "Number" = $i; <-- This is not important in my problem.
}
The question is about middle part of declaring for loop: "$i<=$count" - how it is possible to tell until what point I want this loop with variable, if that variable was made and increased in Javascript language? :?
PHP interpratate HTML, so you are can send variable via ajax only!
You could add an input field to your form and each time you increase your count variable you update its value, so when submitted, you can extract that number via the request.
$(document).ready(function() {
$count = 1;
$('input').click(function() {
$count++;
$('#your-input-field').val($count);
});
});
You should change your form like
<html>
<body>
<form method="post" action="/">
<input type="text" value="0" id="your-input-field" name="count"></input>
<input type="button" value="Increase" name="increase" id="increase"></input>
<input type="button" value="Submit" name="submit" id="submit"></input>
</form>
</body>
</html>
now you can extrach that number via $_POST['count']
You can't use the javascript variable directly in the PHP.
I think the best way to achieve what you want to do is using an AJAX request. You should use the javascript to send a request to another URL and then use the variable.
This is how you should do:
var url = 'create_database_records.php';
var request = $.post(url, { count: count });
request.done(function(data) {
// request is done
});
Notice that in this method you should have access to the count variable.
In the *create_database_records.php* you should use the $_POST['count'] variable.
Note: You should not use $ declaring javascript variables, use var count = 1 instead.
UPDATE: Another way to do this
You may want to put this buttons in a form, and add a new input (type: hidden) that will hold the counter.
<form action="create_database_records.php" method="POST">
<input type="hidden" value="1" name="count" id="count" />
<input type="button" value="Increase" name="increase" id="increase" />
<input type="submit" value="Submit" name="submit" id="submit" />
</form>
Then, in the click event you should change the hidden field value:
$(document).ready(function() {
count = 1;
$('#increase').click(function() {
count++;
$('[name=count]').attr('value', count);
});
});
In the *create_database_records.php* you should use the $_POST['count'] variable.