Develop Reference

If required field is empty, don't open popup

I have a contact form that when you press the send button, opens a popup asking for confirmation of reading the privacy policy.
For now, the form doesn't send anything if there are empty required field, but it opens the popup.
I need to prevent the popup to open if there are still required field to complete.
Here's the code:
$('#myCheck').click(function() {
$(this).toggleClass("checked");
});
(function($) {
$.fn.toggleDisabled = function(){
return this.each(function(){
this.disabled = !this.disabled;
});
};
})(jQuery);
$('.checkz').click(function () {
$('#invias').toggleDisabled();
$('#invias').toggleClass("activ3");
});
$(".pex").click(function (e) {
e.stopPropagation();
});
function checkInputs() {
var isValid = true;
$('input').filter('[required]').each(function() {
if ($(this).val() === '') {
$('#confirm').prop('disabled', true)
isValid = false;
return false;
}
});
if(isValid) {$('#confirm').prop('disabled', false)}
return isValid;
}
//Enable or disable button based on if inputs are filled or not
$('input').filter('[required]').on('keyup',function() {
checkInputs()
})
checkInputs()
.checkz {width:20px;
height:20px;
background: transparent;
background-size: contain;
border:1px solid #CCC;
border-radius:5px;
display:inline-block;
margin-bottom: 5px;
margin-right: 10px;}
#invias {opacity:0.5}
.activ3 {opacity:1 !important}
#popup {
background-color: rgba( 231, 135, 74, 0.85 );
position: fixed;
height: 100%;
width: 100%;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: 1999999999;
overflow: initial;
transition: all .15s ease-in-out;
}
.pex {width:500px;padding:30px;background:#FFF;z-index:1999999999;margin: 10% auto 0;text-align: center;}
.cst {display: inline-block;
text-align: left;}
.checked {background-image: url(https://image.flaticon.com/icons/png/512/3/3596.png)}
button:disabled {opacity:0.5 !important}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script>
function popupshow() {
document.getElementById("popup").style = "";
}
function popupban() {
document.getElementById("popup").style.display = "none";
}
</script>
<form method="post" name="contactform" class="peThemeContactForm">
<div class="col-md-5 col-sm-5 col-xs-12 animated hiding" data-animation="slideInLeft">
<div class="form-group">
<input type="text" name="author" class="form-control input-lg" placeholder="Name*" required />
</div>
<div class="form-group">
<input type="email" name="email" class="form-control input-lg" placeholder="Email*" required />
</div>
<div class="form-group">
<input type="text" name="phone" class="form-control input-lg" placeholder="Phone">
</div>
</div>
<div class="col-md-7 col-sm-7 col-xs-12 animated hiding" data-animation="slideInRight">
<div class="form-group">
<textarea name="message" class="form-control input-lg" placeholder="Message*" required ></textarea>
</div>
</div>
<a onclick="popupshow()" class="btn btn-custom up animated hiding" data-animation="fadeInUpBig" id="confirm">Send message</a>
<div id="popup" style="display:none;">
<div class="pex">
<div class="checkz" id="myCheck"></div> <div class="cst">Dichiaro di aver letto, compreso ed accettato
<br>l'informativa sul trattamento dei miei dati personali</div>
<br><br><a class="btn btn-custom" onclick="popupban()" >Close</a> <button type="submit" class="btn btn-custom" id="invias" onclick="popupban()" disabled>Accept</button>
</div>
</div>
You could use the following fiddle to test: http://jsfiddle.net/2BgdD/12/
Thanks a lot.

If you set isValid as a global variable, you can use it to do a check before firing your popupshow method:
function popupshow() {
if (!isValid) return;
document.getElementById("popup").style = "";
}
You would need to adjust your checkInputs method as well though:
function checkInputs() {
$('input').filter('[required]').each(function() {
if ($(this).val() === '') {
$('#confirm').prop('disabled', true)
isValid = false;
} else {
isValid = true;
}
});
if(isValid) {$('#confirm').prop('disabled', false)}
return isValid;
}
Updated Demo

function popupshow() {
if(checkInputs()) document.getElementById("popup").style = "";
}

Javascript form calculations output

I have a form that calculates price per square meters of ceiling.
And ion range slider as input, then it calculates price and outputs data to inputs. But I need to change inputs with span or div. Any suggestions?
Here is the html:
<form id="calc">
<div id="1">
<p>
<input id="rel" oninput="
var v = this.value;
this.form.new.value = isNaN(v) ? '' : (v * 450).toFixed (0);
var v = this.value; this.form.new2.value = isNaN(v) ? '' : (v * 650).toFixed (0)"
style="display: none;">
</p>
<p><p>
<span class="small">from </span>
<span class="new"></span>
<input type="text" disabled="disabled" name="new" size="2" maxlength="4" value="0" >
<span class="small">to </span><input type="text" disabled="disabled" name="new2" size="2" maxlength="4" value="0">
<div class="result" id="result">
</div>
</p>
</div>
</form>
and here you can find how it works http://jsfiddle.net/khvoroffski/50apyyr5/

Please make a good look at this example , I made you func you make design (css) .
/*Chrome*/
#media screen and (-webkit-min-device-pixel-ratio:0) {
input[type='range'] {
overflow: hidden;
width: 10px;
-webkit-appearance: none;
background-color: #9a905d;
}
input[type='range']::-webkit-slider-runnable-track {
height: 10px;
-webkit-appearance: none;
color: #13bba4;
margin-top: -1px;
}
input[type='range']::-webkit-slider-thumb {
width: 10px;
-webkit-appearance: none;
height: 10px;
cursor: ew-resize;
background: #434343;
box-shadow: -10px 0 0 0px #43e5f7;
}
}
/** FF*/
input[type="range"]::-moz-range-progress {
background-color: #43e5f7;
}
input[type="range"]::-moz-range-track {
background-color: #9a905d;
}
/* IE*/
input[type="range"]::-ms-fill-lower {
background-color: #43e5f7;
}
input[type="range"]::-ms-fill-upper {
background-color: #9a905d;
}
<script>
function E (ele) {return document.getElementById(ele)}
function CALC ( value_ ) {
var SPAN = E("SliderValue")
var FROM = E("FROM")
var TO = E("TO")
var currentValue = E("SliderValue")
var WIDTH_OF_SLIDER = E("rel")
var positionInfo = WIDTH_OF_SLIDER.getBoundingClientRect();
var width_IN_PIX = positionInfo.width;
FROM.value = isNaN(value_) ? '' : (value_ * 450).toFixed (0);
TO.value = isNaN(value_) ? '' : (value_ * 650).toFixed (0);
currentValue.innerHTML = value_ + ""
var COEFICIJENT = width_IN_PIX / 100
currentValue.style.left = ( value_ * COEFICIJENT ) + "px"
}
</script>
<form id="calc"
>
<div id="1">
<p>
<input id="rel"
oninput="CALC(this.value)"
type="range"
maxValue="50"
minValue="5"
value="0"
step="1"
style="width:100%;background-color:red;" >
</p>
<span class="small" >from </span>
<span id="SliderValue" style="position:absolute;left:0;" > </span>
<input type="text" id="FROM" value="0" />
<span class="small">to </span>
<input type="text" id="TO" value="0" />
<div class="result" id="result" > </div>
</div>
</form>

Can I do a toggling loop with Javascript alone?

I have this simple HTML and Javascript, and it works very well. My question is, is there a way to do it with loops?
I don't want to use jQuery -- just plain Javascript, please!
<form action="">
<input type="radio" name="r" onclick="func();" id="r1">
<input type="radio" name="r" onclick="func();" id="r2">
<input type="radio" name="r" onclick="func();" id="r3">
<input type="radio" name="r" onclick="func();" id="r4">
</form>
<div id="sq" style=" width: 100px;
height: 100px;
background: #000;
display: none;"></div>
<div id="ci" style=" width: 100px;
height: 100px;
background: #555;
display: none;></div>
<div id="tr" style=" width: 100px;
height: 100px;
background: #888;
display: none;></div>
<script>
var r1 = document.getElementById("r1");
var r2 = document.getElementById("r2");
var r3 = document.getElementById("r3");
var sq = document.getElementById("sq");
var ci = document.getElementById("ci");
var tr = document.getElementById("tr");
var el = [sq, ci, tr];
var rs = [r1, r2, r3];
function func() {
if(r1.checked) {
sq.style.display = "block";
} else {
sq.style.display = "none";
}
if(r2.checked) {
ci.style.display = "block";
} else {
ci.style.display = "none";
}
if(r3.checked) {
tr.style.display = "block";
} else {
tr.style.display = "none";
}
}
</script>
You can check it out on codepen here.

Use addEventListener instead of inline event listeners. I refactored your code a bit:
const colors = ['black', '#777', '#BBB', 'white'];
const area = document.querySelector('div'); // find the <div> element
// find all <input type="radio"> elements
document.querySelectorAll('input[type="radio"]').forEach((input, index) => {
// add an event listener to the click event
input.addEventListener('click', () => {
// set the <div>'s background color
area.style.backgroundColor = colors[index];
});
});
div {
width: 100px;
height: 100px;
}
<input type="radio" name="r">
<input type="radio" name="r">
<input type="radio" name="r">
<input type="radio" name="r">
<div></div>

Try something like this:
for (var i=0; i<el.length; i++) {
if (rs[i].checked) {
el[i].style.display = "block";
} else {
el[i].style.display = "none";
}
}

Click on submit button after drag and drop

I have the following code:
<div id="main" style="width: 500px; height: 500px; background: #ddd; float: left;"></div>
<div id="list" style="width: 200px; height: 500px; border: 1px solid #ddd; float: left; margin-left: 15px;">
<div class="section">
Ja/Nej
<div class="showforms" style="display: none;">
<strong>Fritext</strong>
<input type="text" name="question">
<p><input type="radio" name="test" value=1> Ja<br>
<input type="radio" name="test" value=0> Nej<br></p>
<input type="submit" name="save" value="Spara" class="save">
</div>
</div>
<div class="section">
Option list
<div class="showforms" style="display: none">
<select>
<option>Fisk</option>
<option>Fisk2</option>
</select>
</div>
</div>
</div>
$(document).ready(function() {
var jsonObj = [];
var i = 0;
$('.section').draggable({
revert: "invalid",
stack: ".yesorno",
helper: "clone"
});
$('#main').droppable({
accept: ".section",
drop: function(event, ui) {
//Lagra ui-objektet i en lista
//Loopa ut objekten och sätt ett index på varje classnamn och visa input fältet
jsonObj[i] = {"Objekt": ui.draggable, "Id": i};
var draggable = jsonObj[i]["Objekt"];
var droppable = $(this);
draggable.show('.showforms');
draggable.clone().appendTo(droppable);
$("#main").find("div").attr('id', i).show();
var testa = $('#main').find("div")[i];
var submit = $(testa).find(":submit").attr('test', i);
console.log($(testa).find(":submit"));
//Object[div#yesorno.ui-draggable.ui-draggable-handle]
i++;
}
});
});
$('.save').click(function() {
console.log("hej"); //This don't work
});
The thing I'm doing here is that I take a section-div containing some input-fields that is being hidden. I drag this into the main-div and drop it here. After it has been dropped, the input-fields are shown.
The problem I have is that nothing is printed out when I click on the submit button after I have dragged and dropped it in the Main-div. What am I doing wrong?

I solved It by doing this:
$(document).on('click', ".save", function() {
console.log($(this).attr('test'));
});

Try:
Replace
<input type="submit" name="save" value="Spara" class="save">
With
<input type="submit" name="save" value="Spara" class="save" onClick="saveFunction()">
Replace
$('.save').click(function() {
console.log("hej"); //This don't work
}
With
function saveFunction(){
console.log("hej");
}

How to edit html table values by passing values to input type

I have a table that has some values that whenever the edit button on that row gets clicked all of the values on that row get passed to the corresponding input tags so they can be edited.
This is my code:
$(document).ready(function() {
//"use strict";
cargarDatos();
$('#frmContacto').submit(function(event) {
event.preventDefault(); //Bloqueo de comportamiento por defecto de formulario
guardarDatos();
cargarDatos();
});
$('input').on('blur', function() {
$(this).addClass('marcado');
//alert(this.value);
});
$('.btnEditar').on('click', function(event) {
event.preventDefault();
//Here is where I call a function that is supposed to pass values to the inputs on my html page so I could update the values
});
$('#inputFoto').on('change', function(e) {
precargarImagen(this);
});
$(window).load(function() {
$(document).ready($('#efecto1').addClass('animacion1'));
// $(document).ready($('#efecto2').addClass('animacion1'));
// cargarDatos();
});
});
/*jshint latedef:false */
function guardarDatos() {
name = $('#inputNombre').val();
direccion = $('#inputDireccion').val();
telefono = $('#inputTelefono').val();
fecha = $('#inputFecha').val();
email = $('#inputEmail').val();
color = $('#inputColor').val();
dataFoto = $("#imgFoto").attr("src");
/*alert("Sus datos son: \n" + nombre + "\n"
+ direccion + "\n" + telefono + "\n"
+ fecha + "\n" + email+ "\n" + color);*/
contacto = {
nombre: name,
direccion: direccion,
telefono: telefono,
fecha: fecha,
email: email,
color: color,
foto: dataFoto
};
contactos.push(contacto);
console.log(JSON.stringify(contactos));
localStorage.setItem('lstcontactos2', JSON.stringify(contactos));
}
/*jshint latedef:false */
function cargarDatos() {
var data = localStorage.getItem('lstcontactos2');
contactos = data && JSON.parse(data);
if (contactos == null)
contactos = new Array();
$('#tablaContactos').bootstrapTable({
data: contactos
});
}
function btnEditar(value) {
console.log("valueformat " + value);
return '<span class="glyphicon glyphicon-pencil"></span>';
}
function imgFoto(value) {
return '<img id="imgFoto" src="' + value +
'" style="width:auto;height:160px;">';
}
function precargarImagen(inputfile) {
var file = inputfile.files[0];
var imageType = /image.*/;
if (file.type.match(imageType)) {
var reader = new FileReader();
reader.onload = function(e) {
var img = new Image();
img.src = reader.result;
$(".file-caption-name").html(file.name);
$(".file-preview-frame").empty();
$(".file-preview-frame").
append('<img id="imgFoto" src="' + reader.result +
'" style="width:auto;height:160px;">');
};
reader.readAsDataURL(file);
inputfile.val(img.src);
} else {
alert("Archivo no soportando!");
}
}
.marcado {
color: #ff0000;
border: 1px solid #0000ff;
}
.desmarcado {
color: #00000;
border: 0;
}
.btn-file {
position: relative;
overflow: hidden;
}
.btn-file input[type=file] {
position: absolute;
top: 0;
right: 0;
min-width: 100%;
min-height: 100%;
text-align: right;
opacity: 0;
filter: alpha(opacity=0);
opacity: 0;
background: none repeat scroll 0 0 transparent;
cursor: inherit;
display: block;
}
.file-preview-frame {
display: table;
margin: 8px;
height: 160px;
width: 160px;
border: 1px solid #ddd;
box-shadow: 1px 1px 5px 0px #a2958a;
padding: 6px;
float: left;
text-align: center;
vertical-align: middle;
transition: all .4s ease-in-out;
}
.file-preview-frame:hover {
box-shadow: 3px 3px 5px 0px #333;
cursor: pointer;
background-size: 150% 150%;
transform: scale(2.2);
}
/* Shrink */
.hvr-shrink {
display: inline-block;
vertical-align: middle;
-webkit-transform: translateZ(0);
transform: translateZ(0);
box-shadow: 0 0 1px rgba(0, 0, 0, 0);
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-moz-osx-font-smoothing: grayscale;
-webkit-transition-duration: 0.3s;
transition-duration: 0.3s;
-webkit-transition-property: transform;
transition-property: transform;
}
.hvr-shrink:hover,
.hvr-shrink:focus,
.hvr-shrink:active {
-webkit-transform: scale(0.9);
transform: scale(0.9);
}
<!DOCTYPE html>
<html lang="es">
<head>
<meta charset=utf-8>
<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
<title>Contactos</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous" />
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css" integrity="sha384-fLW2N01lMqjakBkx3l/M9EahuwpSfeNvV63J5ezn3uZzapT0u7EYsXMjQV+0En5r" crossorigin="anonymous" />
<link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.7.0/bootstrap-table.min.css">
<link rel="stylesheet" href="estilos.css" />
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
<script src="script.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.7.0/bootstrap-table.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.7.0/locale/bootstrap-table-es-AR.min.js"></script>
</head>
<body>
<div class="container">
<h1>Contactos personales</h1>
<nav class="navbar navbar-inverse">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="#">Listado</a>
</div>
</div>
</nav>
<div class="row show-grid">
<div class="animacion1">
<div class="col-sm-6">
<table id="tablaContactos" class="table table-hover" data-toggle="table" data-search="true" data-row-style="rowStyle" data-show-refresh="true" data-show-toggle="true" data-show-columns="true">
<thead>
<tr>
<th data-field="nombre" data-sortable="true">Nombre</th>
<th data-field="direccion" data-sortable="true">Dirección</th>
<th data-field="email" data-sortable="true">Email</th>
<th data-field="fecha" data-sortable="true">Fecha</th>
<th data-field="telefono" data-sortable="true" data-visible="false">Telefono</th>
<th data-field="color" data-sortable="false" data-visible="false">Color</th>
<th data-field="foto" data-sortable="false" data-formatter="imgFoto">Foto</th>
<th data-field="email" data-formatter="btnEditar"></th>
</tr>
</thead>
</table>
</div>
</div>
<div class="col-sm-6">
<div class="panel panel-default">
<div class="panel-heading">Agregar/editar contacto</div>
<div class="panel-body">
<form class="form-horizontal" id="frmContacto">
<div class="form-group">
<label for="inputFoto" class="col-sm-2 control-label">Foto</label>
<div class="col-sm-10">
<div class="file-preview-frame">
<img src="" style="width:auto;height:160px;">
</div>
<input type="file" class="form-control file" id="inputFoto" data-show-upload="false" required="true">
</div>
</div>
<div class="form-group">
<label for="inputNombre" class="col-sm-2 control-label">Nombre</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="inputNombre" placeholder="Ingrese nombre" required>
</div>
</div>
<div class="form-group">
<label for="inputDireccion" class="col-sm-2 control-label">Dirección</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="inputDireccion" required placeholder="Ingrese dirección personal">
</div>
</div>
<div class="form-group">
<label for="inputTelefono" class="col-sm-2 control-label">Telefono</label>
<div class="col-sm-10">
<input type="number" class="form-control" id="inputTelefono" placeholder="Ingrese # telefónico" required>
</div>
</div>
<div class="form-group">
<label for="inputEmail" class="col-sm-2 control-label">Email</label>
<div class="col-sm-10">
<input type="email" class="form-control" id="inputEmail" placeholder="Ingrese Email" required>
</div>
</div>
<div class="form-group">
<label for="inputFecha" class="col-sm-2 control-label">Fecha de nacimiento</label>
<div class="col-sm-10">
<input type="date" class="form-control" id="inputFecha" placeholder="Ingrese su fecha de nacimiento" required>
</div>
</div>
<div class="form-group">
<label for="inputColor" class="col-sm-2 control-label">Color favorito</label>
<div class="col-sm-10">
<input type="color" class="form-control" id="inputColor">
</div>
</div>
<div class="form-group">
<label for="inputURL" class="col-sm-2 control-label">Página Web</label>
<div class="col-sm-10">
<input type="url" class="form-control" id="inputURL" placeholder="Ingrese su página web">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-primary" id="btnGuardar">Guardar OK</button>
<button type="button" class="btn btn-default">Cancelar</button>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
How can I do this with jquery or is there a better way of doing this? and also whenever I click the btnGuardar submit button how can I update table without having to refresh the page to see the new added values?

This is my second answer on this question. It have the same structure as the earlier answer but this one picks up all fields on the same row (wich have the same class) at once.
function edit(key) {
var x = document.getElementsByClassName("prow" + key);
var i;
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
var x = document.getElementsByClassName("inputrow" + key);
var i;
for (i = 0; i < x.length; i++) {
x[i].style.display = "initial";
}
document.getElementById('inputA' + key ).value = document.getElementById('pA' + key ).innerHTML;
document.getElementById('inputB' + key ).value = document.getElementById('pB' + key ).innerHTML;
document.getElementById('inputC' + key ).value = document.getElementById('pC' + key ).innerHTML;
}
function save(key) {
var x = document.getElementsByClassName("prow" + key);
var i;
for (i = 0; i < x.length; i++) {
x[i].style.display = "initial";
}
var x = document.getElementsByClassName("inputrow" + key);
var i;
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
document.getElementById('pA' + key ).innerHTML = document.getElementById('inputA' + key ).value;
document.getElementById('pB' + key ).innerHTML = document.getElementById('inputB' + key ).value;
document.getElementById('pC' + key ).innerHTML = document.getElementById('inputC' + key ).value;
}
*{
font-family: Arial, Helvetica, sans-serif;
}
p {
margin:0px;
}
input[type=text] {
display:none;
height:12px;
width:45px;
}
table, th, td {
border: 2px solid darkslategray ;
background:darkseagreen ;
border-collapse: collapse;
margin:0px;
padding:0px;
}
<table>
<form id=formA>
<tr>
<td>
<p id=pA1 class=prow1>value 1</p><input id=inputA1 type="text" name="A" class=inputrow1 value="value 1"></td>
<td><p id=pB1 class=prow1>value 2</p><input id=inputB1 type="text" name="B" class=inputrow1 value="value 2">
</td>
<td><p id=pC1 class=prow1>value 3</p><input id=inputC1 type="text" name="C" class=inputrow1 value="value 3">
</td>
<td><button type="button" onclick="edit(1)">edit</button><button type="button" onclick="save(1)">save</button>
</td>
</tr>
<tr>
<td>
<p id=pA2 class=prow2>value 1</p><input id=inputA2 type="text" name="D" class=inputrow2 value="value 1"></td>
<td><p id=pB2 class=prow2>value 2</p><input id=inputB2 type="text" name="E" class=inputrow2 value="value 2">
</td>
<td><p id=pC2 class=prow2>value 3</p><input id=inputC2 type="text" name="F" class=inputrow2 value="value 3">
</td>
<td><button type="button" onclick="edit(2)">edit</button><button type="button" onclick="save(2)">save</button>
</td>
</tr>
<tr>
<td colspan=4>
<input type="submit" value="Submit" style="width:100%;">
</td>
</tr>
</form>
</table>

This would be comment but I can't add a comment yet.
It may be a good idea to look at an MVVM library such as:
http://knockoutjs.com/
https://angularjs.org/
http://vuejs.org/
If you're new to the idea of MVVM I would recommend looking at knockout, although it is probably the more complex option the tutorials are excellent: http://learn.knockoutjs.com/

This line gets the text from an element and stores it in the variable y:
var y = document.getElementById('text id').innerHTML;
This line places the value stored in the y variable on the edit box:
document.getElementById('input text id').value = y;
Here it comes a working example:
function edit(key) {
document.getElementById('p' + key).style.display = "none";
document.getElementById('input' + key).style.display = "initial";
var yy = document.getElementById('p' + key).innerHTML;
document.getElementById('input' + key).value = yy;
}
function save(key) {
document.getElementById('p' + key).style.display = "initial";
document.getElementById('input' + key).style.display = "none";
var xx = document.getElementById('input' + key).value;
document.getElementById('p' + key).innerHTML = xx;
}
*{
font-family: Arial, Helvetica, sans-serif;
}
p {
margin:0px;
}
input[type=text] {
display:none;
height:12px;
width:40px;
}
table, th, td {
border: 2px solid tomato;
background:gold;
border-collapse: collapse;
margin:0px;
padding:0px;
}
<table>
<form id=formA>
<tr>
<td>
<p id=pA>value 1</p><input id=inputA type="text" name="A" value="value 1"></td><td><p id=pB>value 2</p><input id=inputB type="text" name="B" value="value 2">
</td>
</tr>
<tr>
<td>
<button type="button" onclick="edit('A')">edit 1</button><button type="button" onclick="save('A')">save 1</button></td>
<td><button type="button" onclick="edit('B')">edit 2</button><button type="button" onclick="save('B')">save 2</button>
</td>
</tr>
<tr>
<td colspan=2>
<input type="submit" value="Submit" style="width:100%;">
</td>
</tr>
</form>
</table>