Would like your help resolving this piece of code.
Trying to clear inputs after submit but not able to.
Can someone give me a hint??
Thank you so much.
<script>
var list = document;
function process(idTable)
{
var newRow = list.createElement('tr');
newRow.insertCell(0).innerHTML = list.getElementsByName('name')[0].value;
newRow.insertCell(1).innerHTML = list.getElementsByName('surname')[0].value;
newRow.insertCell(2).innerHTML = list.getElementsByName('email')[0].value;
list.getElementById(idTable).appendChild(newRow);
return false;
list.getElemntsByName('form')[0].value="";
}
</script>
<section>
<form name="form" method="post" id="myForm" onsubmit=" return process('myTable')" >
<p> <label>Name:</label> <input type="text" name="name" placeholder = "Your first name" required> </p>
<p> <label>Surname:</label> <input type="text" name="surname" placeholder = "Your last name" required> </p>
<p> <label>Email:</label> <input type="e-mail" name="email" placeholder = "xpto#example.com" required> </p>
<p> <input type="submit" value="Add"> <input type="reset" value="Reset"> </p>
</form>
</section>
Two points:
You exited the function before assign value to the form
Better use list.getElemntsByName('form')[0].reset();
So your code will be like this:
<script>
var list = document;
function process(idTable)
{
var newRow = list.createElement('tr');
newRow.insertCell(0).innerHTML = list.getElementsByName('name')[0].value;
newRow.insertCell(1).innerHTML = list.getElementsByName('surname')[0].value;
newRow.insertCell(2).innerHTML = list.getElementsByName('email')[0].value;
list.getElementById(idTable).appendChild(newRow);
list.getElemntsByName('form')[0].reset();
return false;
}
</script>
Why don't you use button tag for your 'submit' and 'reset', then in that use clientclick event, have reset function that clears the input tag.
Use $('#id of input element ').val(' ') inside process function . Also write this code above return false statement
Related
I have to do the validation of the input text field.
I would like Js to show an error message through the setCustomValidity() method.
Is it possible?
function checkName() {
var x = document.formUser;
var input = x.name.value;
if (input.length < 3) {
input.setCustomValidity('This field is invalidate');
return false;
}
}
<form name="formUser" id="formUser" action="#" method="POST" onsubmit="return validateForm();">
<div class="section">
<label for="fname">Nome</label>
<input class="form-control" type="text" id="name" required>
</div>
<input type="submit" class="btn btn-primary" value="Invia" onclick="validateForm();">
</form>
You need to call reportValidity() on the input after setting the custom validity message.
Additionally you must call the reportValidity method on the same element or nothing will happen.
https://developer.mozilla.org/en-US/docs/Web/API/HTMLObjectElement/setCustomValidity#examples
function checkName() {
const inp = document.getElementById('name');
const val = inp.value;
if (val.length < 3) {
inp.setCustomValidity('This field is invalidate');
inp.reportValidity();
return false;
}
}
<form name="formUser" id="formUser" action="#" method="POST" onsubmit="return checkName();">
<div class="section">
<label for="fname">Nome</label>
<input class="form-control" type="text" id="name" required>
</div>
<input type="submit" class="btn btn-primary" value="Invia" onclick="checkName();">
</form>
I would like to control more text input with javascript.
The setCustomValidity() method means that it will have to show an error message if input has less than three characters.
it doesn't always work.
Eg. If I put a string of one character in the first field and a string of four in the second field; it sends without showing the error. If I repeat the same test, it works.
Why?
window.onload = function() {
const field = document.getElementsByClassName("input-field");
for (let i = 0; i < field.length; i++) {
field[i].addEventListener('input', function() {
const val = field[i];
if (val.length < 3) {
field[i].setCustomValidity('Field is invalid');
}
})
}
}
<form name="formUser" id="formUser" action="#">
<div class="section">
<label for="fname">First name</label>
<input class="form-control input-field" type="text" id="fname" required>
<label for="lname">Last name</label>
<input class="form-control input-field" type="text" id="lname" required>
</div>
<input type="submit" class="btn btn-primary" value="Send">
You could add a <p class="error">...</p> inside your section div.
Hide it with css (display: none) and when you get an error in your validation add a class to that like "show" to show it (display: unset).
You can do custom form validation using Javascript like this.
Here I have just added a div with a warning and alert box. You can do whatever you want.
It will alert a warning if you will click on submit when fields were empty.
<!DOCTYPE html>
<html>
<head>
<script>
function validateForm() {
let x = document.forms["myForm"]["fname"].value;
let alertBox = document.getElementById("alert-box");
// Here instead of checking (x == " "), you can use your custom validations
if (x == "") {
alertBox.innerHTML = `<p>Form input are empty</p>`; // appends a div with warning
alert("Name must be filled out"); // alert box
return false;
}
}
</script>
</head>
<body>
<h2>JavaScript Validation</h2>
<div id="alert-box"> </div>
<form name="myForm" action="#" onsubmit="return validateForm()" method="post">
Name: <input type="text" name="fname">
<input type="submit" value="Submit">
</form>
</body>
</html>
I have a form which asks user to give some input values. For some initial inputs i am doing custom validation using javascript. At the end of form one field is validated using "html required attribute". But when user clicks on submit button, input box which have required attribute shows message first instead of giving chance to previous ones i.e. not following order of error display. Below i added code and image , instead of showing that name is empty it directly jumps to location input box. This just confuses the end user. Why this problem occurs and how to resolve it?
<html>
<head>
<script>
function validate(){
var name = document.forms['something']['name'].value.replace(/ /g,"");
if(name.length<6){
document.getElementById('message').innerHTML="Enter correct name";
return false;
}
}
</script>
</head>
<body>
<form name="something" action="somewhere" method="post" onsubmit="return validate()">
<div id="message"></div>
Enter Name : <input type="text" name="name" /> <br/> <br/>
Enter Location : <input type="text" name="location" required="required" /> <br/> <br/><br/> <br/>
<input type="submit" name="submit" />
</form>
</body>
</html>
This is probably just the HTML5 form validation triggered because of the required attribute in the location input.
So one option is to also set the required attribute on the name. And or disable the HTML5 validation with a novalidate attribute. See here for more information: https://stackoverflow.com/a/3094185/2008111
Update
So the simpler way is to add the required attribute also on the name. Just in case someone submits the form before he/she entered anything. Cause HTML5 validation will be triggered before anything else. The other way around this is to remove the required attribute everywhere. So something like this. Now the javascript validation will be triggered as soon as the name input looses focus say onblur.
var nameElement = document.forms['something']['name'];
nameElement.onblur = function(){
var messageElement = document.getElementById('message');
var string = nameElement.value.replace(/ /g,"");
if(string.length<6){
messageElement.innerHTML="Enter correct name";
} else {
messageElement.innerHTML="";
}
};
<form name="something" action="somewhere" method="post">
<div id="message"></div>
Enter Name : <input type="text" name="name" required="required" /> <br/> <br/>
Enter Location : <input type="text" name="location" required="required" /> <br/> <br/><br/> <br/>
<input type="submit" name="submit" />
</form>
Now the above works fine I guess. But imagine you might need that function on multiple places which is kind of the same except of the element to observe and the error message. Of course there can be more like where to display the message etc. This is just to give you an idea how you could set up for more scenarios using the same function:
var nameElement = document.forms['something']['name'];
nameElement.onblur = function(){
validate(nameElement, "Enter correct name");
};
function validate(element, errorMessage) {
var messageElement = document.getElementById('message');
var string = element.value.replace(/ /g,"");
if(string.length < 6){
messageElement.innerHTML= errorMessage;
} else {
messageElement.innerHTML="";
}
}
<form name="something" action="somewhere" method="post">
<div id="message"></div>
Enter Name : <input type="text" name="name" required="required" /> <br/> <br/>
Enter Location : <input type="text" name="location" required="required" /> <br/> <br/><br/> <br/>
<input type="submit" name="submit" />
</form>
I want to pass the value 9112232453 of one textfield to another.
I know I need Javascript for this but I don't know how to do it.
HTML
<form method = "post" action="">
<input type="checkbox" name="phone" value="9112232453" onclick='some_func();' >
<input type="text" name="phone" value="" id="phone">
<input type="submit" name="Go">
</form>
Then later, I want to use the value in my php.
You could use a JS. function to take param (this.value) like:
<script>
var some_func = function (val){
var input = document.getElementById("phone");
input.value = val;
}
</script>
<form method = "post" action="">
<input type="checkbox" name="phone" value="9112232453" onclick='some_func(this.value);' >
<input type="text" name="phone" value="" id="phone">
<input type="submit" name="Go">
</form>
The best way is to not obtrude the HTML code with Javascript event handlers.
So, you can add a DOMContentLoaded event listener to the document, and as soon as DOM is loaded:
You add a change event listener to the input[type=checkbox], and then:
1.1. If the checkbox is checked, then you change the input#phone's value to its value
1.2. If not, then you empty the input#phone's value.
document.addEventListener('DOMContentLoaded', function() {
document.getElementById('cbphone').addEventListener('change', function(e) {
var phone = document.getElementById('phone');
if (this.checked) {
phone.value = this.value;
// you can even enable/disable the input#phone field, if you want to, e.g:
// phone.disabled = false;
}
else {
phone.value = '';
// phone.disabled = true;
}
});
});
<form method="post" action="">
<input type="checkbox" name="cbphone" id="cbphone" value="9112232453">
<input type="text" name="phone" id="phone">
<input type="submit" name="Go" value="Go">
</form>
before submit form use validation and check whether the field value is filled up or not. if yes get value of the field.
if(document.getElementBy("fieldIdfirst").value!="")
{
document.getElementBy("fieldIdSecond").value=document.getElementElementById("fieldIdfirst");
}
Thanks it..
Try this: http://jsfiddle.net/yhuxy4e1/
HTML:
<form method = "post" action="">
<input type="checkbox" name="phone" value="9112232453" onclick='some_func();' id="chk_phone">
<input type="text" name="phone" value="" id="txt_phone">
<input type="submit" name="Go">
</form>
JavaScript:
some_func = function() {
var checkBox = document.getElementById('chk_phone');
var textBox = document.getElementById('txt_phone');
textBox.value = checkBox.value;
}
I have a form, with a number of textboxes which a user can fill in. At the bottom of the form I have two buttons. One for canceling and one for submitting. Like the example below
<form action='bla.php' method='post'>
<input type='text' name='someTextField1'>
<input type='text' name='someTextField2'>
<input type='text' name='someTextField3'>
<input type='submit' name='submit'>
<input type='submit' name='cancel'>
</form>
And I have a js function that checks the fields for their data which I used to use for both buttons. I therefor refer to the js function in the form as below:
<form action='bla.php' method='post' name='form' onSubmit='return CheckFields()'>
The js function looks like this:
function CheckFields() {
var formname = "form";
var x = document.forms[formname]["someTextField1"].value;
var result = true;
var text = "";
if (x == null || x == "") {
text += "Dont forget about the someTextField1.\n";
result = false;
}
if(!result)
alert(text);
return result;
}
Now I want this js function to only run when using the submit and not the cancel button. When I try to move the call to the function to the submit button as below it doesn't work:
<input type='submit' name='submit' onClick='return CheckFields()'>
<input type='submit' name='cancel'>
Why? What is the smartest way of solving this? Should I leave the call to CheckFields() in the form and check within the script what button was clicked or should I remake the function to somewhat work with a button instead? Anyone have an idea or an example?
replace <input type='submit' name='cancel'> by <input type='button' name='cancel'>.Your Version actually has two submit-buttons, both of which will submit the form.
Watch this sample http://jsfiddle.net/355vw560/
<form action='bla.php' method='post' name="form">
<input type='text' name='someTextField1'>
<input type='text' name='someTextField2'>
<input type='text' name='someTextField3'>
<br/>
<input type='submit' name='submit' onclick="return window.CheckFields()">
<input type='submit' name='cancel' value="cancel" onclick="return false;">
anyway it's always better to use jquery or event listeners instead of managing events directly in the dom.
The function didnt worked because its scope was the element, if u specify window as context your function works.
First at all, it's not needed have submit button on a form if you want to use javascript to check all the fields before submitting.
I think the smartest way of doing it will be as follow:
Your form (without action, submit button, and method. Only identifing each component with id's):
<form id="formId">
<input type='text' id="text1">
<input type='text' id="text2">
<input type='text' id="text3">
<input type='button' id="accept">
<input type='button' id="cancel">
</form>
Your javascript (you have to have jQuery added):
jQuery("#formId").on("click", "#accept", function(){ //listen the accept button click
if(CheckFields()){ //here you check the fields and if they are correct
//then get all the input values and do the ajax call sending the data
var text1 = jQuery("#text1").val();
var text2 = jQuery("#text2").val();
var text3 = jQuery("#text3").val();
jQuery.ajax({
url: "bla.php",
method: "POST",
data: {
"someTextField1":text1, //In your example "someTextField1" is the name that the bla.php file is waiting for, so if you use the same here, it's not needed to change anything in your backend.
"someTextField2":text2,
"someTextField3":text3
},
success: function(){
//here you can do whatever you want when the call is success. For example, redirect to other page, clean the form, show an alert, etc.
}
});
}
});
jQuery("#formId").on("click", "#cancel", function(){ //here listen the click on the cancel button
//here you can clean the form, etc
});
function CheckFields() { //here I did a little change for validating, using jQuery.
var x = jQuery("#text1").val();
var result = true;
var text = "";
if (x == null || x == "") {
text += "Dont forget about the someTextField1.\n";
result = false;
}
if(!result)
alert(text);
return result;
}
I hope it helps you!
I handle it with this way , Hope it will help.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<form method="post" action="/">
<div class="container" style="background: #efefef; padding: 20px;">
<label>Encrypt and decrypt text with AES algorithm</label>
<textarea name="inputText" id = "inputText" rows="3" cols="100" placeholder="Type text to Encrypt..." maxlength="16" ></textarea>
<br>
<br>
<textarea name="inputKey" id = "inputKey" rows="1" cols="100" placeholder="Type key to Encrypt\Decrypt text with..." maxlength="16"></textarea>
<br>
<br>
<label>SBox :</label>
<div>
<div class="s-box-radios">
<ul class="sbox">
<li>
<label>SBox 1
<input id="sbox1" name="sboxOption" type="radio" value="option1" required/>
</label>
</li>
<li>
<label>SBox 2
<input id="sbox2" name="sboxOption" type="radio" value="option2" />
</label>
</li>
<li>
<label>SBox 3
<input id="sbox3" name="sboxOption" type="radio" value="option3" />
</label>
</li>
<li>
<label>SBox 4
<input id="sbox4" name="sboxOption" type="radio" value="option4" />
</label>
</li>
</ul>
</div>
<div class="s-box-display">
<textarea rows="5" cols="10"></textarea>
</div>
</div>
<div class="clear"></div>
<br>
<label>Result of Decryption in plain text</label>
<textarea name="inputCipher" rows="3" cols="100" placeholder="Encrypted Texts..." name="decrpyted"></textarea>
<br>
<input type="submit" value="Encrypt" name="Encrypt" id ="encrypt" onclick="valEncrypt()" />
<input type="submit" value="Decrypt" name="Decrypt" id ="decrypt" onclick="valDncrypt()" />
</div>
</form>
<script>
function valEncrypt()
{
var inputText = document.getElementById('inputText');
var inputkey = document.getElementById('inputKey');
if (inputText.value.length <16)
{
doAlert(inputText);
return false;
}
else
{
removeAlert(inputText);
}
if (inputkey.value.length <16)
{
doAlert(inputkey);
return false;
}
else
{
removeAlert(inputkey);
}
}
function valDncrypt()
{
var inputkey = document.getElementById('inputKey');
if (inputkey.value.length <16)
{
doAlert(inputkey);
return false;
}
alert('!Success');
}
function doAlert(element){
element.style.border = "1px solid #FF0000";
}
function removeAlert(element){
element.style.border = "1px solid #000000";
}
</script>
</body>
</html>
I have a simple form, with one issue.
In explorer, if nothing is inserted, the placeholder is passed as input of the field.
Here is JSbin: http://jsbin.com/EvohEkO/1/
I would like to make a simple comparision, when form is submitted, to check if the value of the field is equal to "First name", and if yes make the value empty ""
Just this i need.
Someone can help me please?
<form onsubmit="return checkform()">
<input name="test" placeholder="placeholdertext" id="test" />
<input type="submit" value="submitbutton"/>
</form>
in js
you should import jquery latest version this is the link: http://code.jquery.com/jquery-1.10.2.min.js
function checkform(){
var fieldvalue = $.trim($('#test').val());
if(!fieldvalue || fieldvalue=="placeholdertext"){
alert('there is no input');
return false;
}else{
alert('enjoy your form!');
return true;
}
}
This is somewhat easier..
$(document).ready(function(){
$("#form").submit(function(){
$('#form input:text, textarea').each(function() {
if($(this).val()==$(this).attr('placeholder'))
$(this).val(" ");
});
});
});
Just put your field value in hidden type input like this :-
<input id="hdnfield" name="hdnfield" value="<Your Field Value>" />
To check the value of a form field use the val() function on the input element
var input_value = jQuery('Input Element Selector').val();
As I looked to your form, the elements do not have any id attribute, I recommend that you add one to each of them, also change the submit input to button the you have more control on the javascript. so your form will look like :
<form id="form" action="form.php" method="post">
<input id="fname" type="text" placeholder="First name" name="fname"><br>
<label for="fname" id="fnamelabel"></label>
<input id="lname"type="text" placeholder="Last name" name="lname"><br>
<textarea id="message" placeholder="Contact us!" cols="30" rows="5" name="message"></textarea><br>
<br>
<input type="button" value="Submit">
</form>
so your jQuery will look like:
jQuery(document).ready(function(){
jQuery('input[type="button"]').click(function(){
var fname = jQuery('#fname').val();
var lname = jQuery('#lname').val();
var message = jQuery('#message').val();
...... Do whatever you need & then change the input values
...... if all validation has passed the use jQuery('#form').submit(); to submit the form otherwise reset the form:
jQuery('#fname').val("");
jQuery('#lname').val("");
jQuery('#message').val("");
});
});
here is a working version:
jsfiddle working link
You can do it like the following!
<form>
<input type="text" id="first_name" name="first_name"/>
<input type="submit" id="submit" value="submit"/>
</form>
<script type="type/javascript"/>
jQuery.noConflict();
(function ($) {
$(function () {
$("#submit").click(function () {
if ($("#first_name").val() == "first name") {
$(this).val("");
}
});
});
})(jQuery);
</script>