is there a way to write the same thing clientside using javascript to multiple divs or multiple spots on a page?
I have a php script outputting rows from a database. To edit the contents, I would like to insert a checkbox before each row as with the iphone edit contacts and to do it quickly, I'm trying to use javascript to populate a div with a checkbox before each row using getElemenByID.
One problem is you cannot have more than one div of the same name on a page so I can't write once and have it populate multiple divs of the same name. If I give divs different names than I have to write multiple times which is not appealing especially as the number of rows may vary.
As a related question would checkboxes inserted using javascript even work?
Here is non working code:
js
function edit() }
var box = '<input type="checkbox name=num[]>';
var target = "checkbox";
document.getElementById(target).innerHTML = box;
return;
}//end function
html (generated by PHP from dbase)
<form action="edit.php" method="post">
<a href="javascript:void" onclick="edit()";>edit</a>
<div id="checkbox"></div>Row1 contents<br>
<div id="checkbox"></div>Row2 contents<br>
<form type = "submit" value="Edit">
</form>
Does anyone know a way to do this ie make boxes appear that can then be selected for submission?
Many thanks for any suggestions.
Should be generated using PHP instead, but...
HTML
I'm guessing that you want to use a span element (not a div) for your checkbox placeholder, otherwise you'd have a checkbox on one line, and then "Row1 contents" below the checkbox, versus having the checkbox next to the text.
[X]
Row 1 Contents
versus (span)
[X] Row 1 Contents
<form action="edit.php" method="post" name="frmRows" id="frmRows">
edit
<span class="checkbox"></span>Row1 contents<br>
<span class="checkbox"></span>Row2 contents<br>
<input type = "submit" value="Edit">
</form>
JavaScript
It's not recommended to use .innerHTML in JavaScript unless absolutely necessary (not supported in all browsers, and there are better ways to accomplish the same task.)
function edit() {
var newCb;
var i;
var checkboxList = document.getElementsByClassName( 'checkbox' );
for ( i = 0; i < checkboxList.length; i++ ) {
newCb = document.createElement( 'input' ); // Create a new input element
newCb.setAttribute( 'type', 'checkbox' ); // Set attributes for new element
newCb.setAttribute( 'value', 'SomeValueHere' );
newCb.setAttribute( 'name', 'checkboxName' );
newCb.setAttribute( 'id', 'checkbox-' + i );
checkboxList[i].appendChild( newCB ); // Add checkbox to span.checkbox
}
}
The ID attribute must be unique on each page. You could use the class attribute like this:
<div class="checkbox"></div>Row1 contents<br>
<div class="checkbox"></div>Row2 contents<br>
and then you can use
var check = getElementsByClassName('checkbox');
for (var i=0; i< check.length; i++) {
check[i].innerHTML = box;
}
But... this will not work in IE < 9. If you are using a framework like jQuery they already implemented a workaround for this but with pure JS you have to implement this yourself.
jQuery example
HTML
<div class="checkbox"></div>Row1 contents<br>
<div class="checkbox"></div>Row2 contents<br>
JS
var box = '<input type="checkbox" name="num[]" />';
$(".checkbox").html(box);
The HTML
The first thing to do is to update the generated HTML. In HTML element id attributes should be unique just like field names inside a form. To classify multiple elements as similar you should use the class attribute.
Here is an example of how you could structure the HTML.
<form action="edit.php" method="post">
edit
<div id="row1Identifier" class="editCheckbox"></div>Row1 contents</br>
<div id="row2Identifier" class="editCheckbox"><?div>Row2 contents</br>
<input type="submit" value="Submit">
</form>
The javascript
Using document.getElementsByClassName will return a list of elements with the matching class.
function edit () {
// set up the variables used in this function
var checkboxDivs = document.getElementsByClassName('editCheckbox'),
i,
loopDiv;
// make the change to each div
for (i = 0; i < checkboxDivs.length; i += 1) {
loopDiv = checkboxDivs[i];
loopDiv.innerHTML = '<input type="checkbox" name="' + loopDiv.id + '">';
}
}
Even if you could do it with a single line (using jQuery, for exemplo), you would actually be running a loop through all the divs (that's the only way to change something in various elements: change it in each one).
So you can do this with pure JavaScript using a loop to run the modifications in all the divs, getting them by id (the faster way):
for(var i = 0; i < numberOfDivs; i++){
document.getElementById("myElement" + i).innerHTML = box; //concatenating i to a base id
}
You could also use another slower techniques to get elements by tag name or class, or even use a lib such as jQuery.
If you use jquery:
function edit() {
// box = '<input type="checkbox name=num[]>';
var target = "checkbox";
$(".cb").html(box);
return;
}//end function
<form action="edit.php" method="post">
edit
<div class="cb" id="checkbox">aa</div>Row1 contents<br>
<div class="cb" id="checkbox">bb</div>Row2 contents<br>
</form>
Related
I have a 'users page'. I would like to give a textbox for entering the no. of users. On click of submit 'n' no of user forms need to be presented to user.
User1
first name -
last name -
User2
first name -
last name -
.
.
.
UserN
first name -
last name -
I don't know the value of 'N' upfront. So it won't be a good idea to write multiple 'divs' in my html.
Requirement:Rather I want to have a user template div. And copy the template 'n' times depending on the value of 'n' in the textbox. But I would also want all the 'divs' to have different ids like 'user1', 'user2' etc.
I cannot figure out a way to do this apart from populating my html with too many 'divs'. Would need help achiving the Requirement specified.
Looking for a template like:-
<div id="user-template" class="hidden">
<label class="lbl"><b>Handle:</b></label><input type="text" id="first_name" value=""/>
</div>
And wanted to have id="user-template" change for all new divs.
You can try something like this:
You can make a template and append it to the DOM for the number entered in the input field.
$(document).ready(function() {
$("#createForms").click(function() {
var numOfForms = $("#numOfForms").val();
var template = $('#hidden-template').html();
for (var i = 0; i < numOfForms; i++) {
$('#targetDiv').append("<p>User" + (i + 1) + ":</p>");
$('#targetDiv').append(template);
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="numOfForms"></input>
<input type="button" id="createForms" value="Get Fields"></input>
<div id="targetDiv"></div>
<script id="hidden-template" type="text/x-custom-template">
<div id="user-template" class="hidden">
<p>First Name:
<input type="text" name="firstName"></input>
</p>
<p>Last Name:
<input type="text" name="lastName"></input>
</p>
<br>
</div>
</script>
A simple way is to write a function that takes the n value and returns the actual dom that you can append to some parent element on your page. A simple example below:
function createNDivs(n) {
if(!n) return;
var fragment =document.createDocumentFragment();
for(var i=0;i<n;i++) {
var div = document.createElement('div');
fragment.appendChild(div);
}
return fragment;
}
I am trying to create div using javascript and jquery.
My Code so far:
<script>
var numOfWindows = 3;
var arrayDiv = new Array();
for (var i = 0; i < numOfWindows; i++)
{
var newDiv = $('#server div:first').clone();
$('#server').append(newDiv);
}
</script>
<input type="text" name="numserver"><br>
<button onclick="new_server()">GO</button>
<br>
<div id="server">
<div id="1">
<table border="3"><tbody>
<tr><th colspan="4" style="background-color:#b0c4de;">Server 1</th></tr>
<br>
<tr><td>Technology<select name="tech[]"><option value="w">Web</option><option value="d">DB</option><option value="m">Mail</option><option value="o">Other</option></select><br>
<br></td>
<td>CPU? <input type="text" name="cpu[]"><br></td>
<td>Memory? <input type="text" name="memory[]"><br></td>
<td>Disk Space? <input type="text" name="space[]"><br></td></tr>
<br>
</tbody></table>
</div>
</div>
My end result is for the user to be able to enter the amount of servers and click GO and then the divs are automatically created.
I know how to get the numOfWindows value but i think it should work with a static value for now.
The code is correct, but how says adeneo, you don't have a DOM ready handler.
Use instead something like this:
function LoadMyJs(){
var numOfWindows = 3;
var arrayDiv = new Array();
for (var i = 0; i < numOfWindows; i++)
{
var newDiv = $('#server div:first').clone();
$('#server').append(newDiv);
}
}
<body onLoad="LoadMyJs()">
You are trying to run the script which works with undefined HTML. To solve this you can either move your script after defining HTML or use jquery shortcut document.ready function such as $(function(){<your code here>});.
In first case event handler has to be a global variable right away. Otherwise you declare this variable before shortcut scope.
Next you define that event handler function obtains input value ($('input[name="numserver"]').val()). And now you can generate as many divs as defined by the value(Array.apply(null, [+value]).map(function(){<generator here>})). To generate copies clone method may be used and generated divs should be inserted into div container as you do.
Looks like you're trying to generate divs by "GO" button click. In your case to do that event handler function should be named "new_server". And you don't call this function in "onclick" attribute you just declare it.
Im uploading multiple pdfs at same time, and Im trying to find a method to give a a custom title for each uploaded pdf.
So I thought at first using php, I store a variable to count pdfs that the user selected
$countPdfs = count($_FILES['pdfs']['tmp_name']);
And then in my form, I have some php where I show a text input to write a title for each pdf that I upload.
<div class="galerry">
<div class="label">
<span class="field">Pdfs:</span>
<input type="file" name="pdfs[]" class="j_gallerypdf" multiple="multiple" accept="application/pdf" />
<div class="j_gfalsepdf">Select many pdfs</div>
<img src="img/upload.png" class="j_gsendpdf"/>
</div>
<?php
if(isset($countPdfs )){
for($i=1;$i<=$countPdfs ;$i++){
echo '<div class="label">';
echo '<span class="field">Pdf Title:</span>';
echo '<input type="text" name="title" />';
echo '</div>';
}
}
?>
</div>
And so If I select 5 pds it shows me 5 text inputs, it is working fine.
But I need to send my form and only after send form my inputs appear.
Do you know how can I do this using jQuery? After I select my pdfs in my input file, show the same number of input texts that my number of selected pdfs?
Im already using this jQuery function below to show in my input the number of pdfs that user select:
$('.j_gsendpdf').click(function(){
$('.j_gallerypdf').click().change(function(){
var numFiles = $(this)[0].files.length;
$('.j_gfalsepdf').animate({width:'400'}, 500, function(){
$(this).html('You selected'+ numFiles +'</strong> files.');
});
});
});
But do you know how can I use this numFiles also to open a number of input texts icual to my numFiles variable?
One approach is the following:
// binding a change event-handler to the file-input(s):
$('input[type="file"]').on('change', function(){
// finding the closest '.gallery' element, then finding
// its descendant 'fieldset' element, removing the 'empty' class
// (that it has on page-load to hide it while empty):
var fieldset = $(this).closest('.gallery').find('fieldset').removeClass('empty'),
// we're using the fileList so we're caching it, the other two are
// used later (in the for loop):
files = this.files, curFile, label;
for (var i = 0, len = files.length; i < len; i++){
// caching the 'current file' in the prepared variable:
curFile = files[i];
// creating a label element, keeping a reference in the
// prepared variable:
label = $('<label />', {
'html' : 'Change the name of <span class="filename">' + curFile.name + '</span>?'
// appending the created 'label' to the fieldset:
}).appendTo(fieldset);
// creating an 'input' element:
$('<input />', {
'type' : 'text',
// the current value is the current file-name:
'value' : files[i].name
// appending that to the created/appended 'label' element:
}).appendTo(label);
}
});
JS Fiddle demo.
The above approach relies on the presence of a fieldset identifying where the createdinput elements should be appended, so I've changed your HTML to the following:
<form action="#" method="post">
<div class="gallery">
<div class="label"> <span class="field">Pdfs:</span>
<input type="file" name="pdfs[]" class="j_gallerypdf" multiple="multiple" accept="application/pdf" />
<div class="j_gfalsepdf">Select many pdfs</div>
<fieldset class="empty">
<legend>Titles</legend>
</fieldset>
</div>
</div>
</form>
This approach is, however, moderately naive: if you reselect new files from the file input it will create, and append, new <label> and <input> elements. This could be partially countered (assuming it's not an inconvenience to you, or your users, by removing previously-created elements), using empty(): JS Fiddle demo.
References:
appendTo().
Attribute-equals ([attribute="value"]) selector.
closest().
empty().
find().
on().
I did it this way.
$('.j_gallerypdf').click().change(function(){
var allFiles = this.files;
var numFiles = this.files.length;
$('.j_gfalsepdf').animate({width:'400'}, 500, function(){
$(this).html('You selected'+ numFiles +'</strong> files.');
for(var i = 0; i<numFiles; i++) {
var file = allFiles[i], name = file.name;
$(this).append('<input type="text" name="title[]" value="'+name+'"/>');
}
});
});
This is a pretty straightforward question, but I wasn't able to find the answer to it.
Is it possible to do something like this with JavaScript and HTML? So below the names of the checkboxes in order would be 1, 2, 3, 4
<input type="checkbox" name=counter()>
<input type="checkbox" name=counter()>
<input type="checkbox" name=counter()>
<input type="checkbox" name=counter()>
function counter() {
i++;
return i;
}
No, but yes in a different way. Don't include the name attribute (or set the value as ""), and put this code after your checkboxes:
<script type="text/javascript">
var chx = document.getElementsByTagName("input");
for (var i = 0; i < chx.length; i++) {
var cur = chx[i];
if (cur.type === "checkbox") {
cur.name = "checkbox" + i;
}
}
</script>
DEMO: http://jsfiddle.net/bLRLA/
The checkboxes' names will be in the format "checkbox#". This starts counting at 0. If you want to start the names with 1 instead (like you did say), use cur.name = "checkbox" + i + 1;.
Another option for getting the checkboxes is using:
var chx = document.querySelectorAll('input[type="checkbox"]');
With this, you don't have to check the .type inside the for loop.
In either case, it's probably better not to use document, and instead use some more specific container of these elements, so that not all checkboxes are targeted/modified...unless that's exactly what you want.
In the demo, I added extra code so that when you click on the checkbox, it will alert its name, just to prove it's being set properly. That code obviously isn't necessary for what you need....just the code above.
This code could be run immediately after the checkboxes, at the end of the <body>, or in window.onload.
You can get a nodeList of all inputs on the page and then loop through them adding the loop index to whatever the common name string you want for those that have a type of "checkbox". In the following example I have used Array.forEach and Function.call to treat the array like nodeList as an array, to make looping simple.
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
var inputs = document.getElementsByTagName("input");
Array.prototype.forEach.call(inputs, function (input, index) {
if (input.type === "checkbox") {
inputs.name = "box" + index;
}
});
on jsfiddle
Finally, though this has been demonstrated as possible, I think you need to be asking yourself the question "why would I do it this way?". Perhaps there is a better alternative available to you.
Since you're most probably processing the form server-side. you can possibly not bother altering the form markup client-side. For example, simple changing your form markup to the following will do the trick:
<input type="checkbox" value="One" name=counter[]>
<input type="checkbox" value="Two" name=counter[]>
<input type="checkbox" value="Tre" name=counter[]>
<input type="checkbox" value="For" name=counter[]>
Then, for example, using PHP server-side:
<?php
if ( isset( $_REQUEST['counter'] ) ) {
print_r( $_REQUEST['counter'] );
}
?>
I think you're better off creating the elements in code. add a script tag in replace of your controls and use something like this (create a containing div, I've specified one named container in my code below)
for(int i = 0; i < 4; i ++){
var el = document.createElement('input');
el.setAttribute('name', 'chk' + i.toString());
document.getElementById('container').appendChild(el);
}
I have a simple HTML form that asks a user to input their name, SKU, quantity, and comments. This is for a simple inventory request system.
<html>
<body>
<form id="myForm" method="post">
<input type="submit">
<br>Name: <input type="text" name="form[name]">
<br>SKU: <input type="text" name="form[SKU1]">
<br>Quantity: <input type="text" name="form[quantity1]">
<br>Comment: <input type="text" name="form[comment1]">
</form>
Add item
<script>
var num = 2; //The first option to be added is number 2
function addOption() {
var theForm = document.getElementById("myForm");
var newOption = document.createElement("input");
newOption.name = "form[SKU"+num+"]"; // form[varX]
newOption.type = "text";
theForm.appendChild(newOption); //How can I add a newline here?
optionNumber++;
}
</script>
</body>
</html>
Currently I can only get it working where it will add a single form value. I would like to recreate the entire myForm except for the name field with a single click.
Your post is very old, so presumably you've found an answer by now. However, there are some things amiss with your code.
In the JavaScript code you have
var num = 2;
This is the number that is incremented to keep track of how many "line-items" you will have on the form. In the function addOption(), though, instead of incrementing num you have
optionNumber++;
You never use optionNumber anywhere else. Your code works once, when you add the first item, but since you increment the wrong variable, you are effectively always adding option 2.
Oh, and adding the newline: you need to append a <br> element.