Let say there is an input element field and i want to create a new validation class myClass ,that i can insert with any html element that might performing some function and also setting attribute such as
readonly="true"
required='true'.
HTML is
<td>
<input type="text" id="endDate" name ="endDate" class="select_200" required readonly="true">
</td>
Now rather setting elements separately need one class for performing:
A function check "let say character count less then 10" and setting
attribute.
Setting attributes such as readonly ,required
So that i can add that class to all elements with similar property.
Validation + Setting/ Reseting attributes by adding class only
You can set your own custom attributes for your input elements and use those custom attributes to query the input fields and perform various actions. You can find my sample below.
$(function () {
//Set various input field attributes here
$("input[data-myCustomClass]").each(function(){
//$(this).attr("readonly", true);
$(this).attr("required", true);
});
//Sets max length - you can change this code to retrieve info from attribute
$("input[data-setFieldLength]").each(function(){
$(this).attr("maxlength", 10);
});
//Validate for field length based on "validateFor" attribute
$("input[data-validateFieldLength]").each(function(){
$(this).on('focusout', function(){
var validateFor = $(this).attr("validateFor");
if ($.trim($(this).val()).length < parseInt(validateFor))
{
$(this).focus();
$(this).select();
}
});
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<input type="text" data-myCustomClass data-setFieldLength id="field1" />
<input type="text" data-myCustomClasss id="field2" />
<input type="text" data-setFieldLength id="field3" /> <!-- set field length to 10 -->
<input type="text" data-validateFieldLength id="field4" validateFor="5" /> <!-- validate for 5 characters and return focus -->
you have create new function for a field?
on
<form onsubmit="return validate()" name="form">
<td>
<input type="text" id="custname" name ="endDate" class="select_200"
required readonly="true">
<font style="color:red" id="custnameerror"></font>
</td>
<button onclick="return validate()"></button>
</form>
javascript validation function like
<script type="text/javascript">
function validate(from)
{
var error=document.getElementById("custnameerror");
var custname=form["custname"].value;
error.innerHTML="";
if( custname==null || custname==""){
error.innerHTML="Enter customer name";
return false;
}
if(custname.length<3){
error.innerHTML="Customer name should be minimum 3 character";
return false;
}
if(custname.length>80){
error.innerHTML="Customer name should be in between 3 to 80
character";
return false;
}/*end */
</script>
Related
After submitting a form i need to unset the posted values, based on other values, before actually parsing the posted data to php.
For example:
My form contains 2 hidden fields and 2 regular inputs:
<form class='myForm'>
<input type="hidden" name="hide[0]" id="h[0]" value="someValue1" data-key="0" />
<input type="hidden" name="hide[1]" id="h[1]" value="someValue2" data-key="1" />
<input type=“text” name=“text[0]” id=“t[0]” value="" data-key=“0” />
<input type=“text” name=“text[1]” id=“t[1]” value="" data-key="1" />
<input type=“submit” value=“submit” />
</form>
i'm trying to unset posted value via javascript:
$('.myForm').submit(function() {
// loop through each input type = text
$('.myForm').submit(function() {
// loop through each input type = text
$(':input[type=text]').each(function() {
var key = $(this).attr('data-key');
var textValue = $(this).val();
if (textValue < 1) {
// unset posted input [type=text] with data-key
// unset posted hidden with same data-key
}
});
});
Unfortunately i have no clue how to unset the posted values without removing the actual form elements.
Any tips are welcome.
I would like to copy the value from an input in one form to the value of an input(with the same name) of the next form down. The forms and inputs are named the same. All it needs to do is copy the value of the title input to the title input one form down.
<form>
<input name="file" value="1.xml">
<input name="title" id="title" value="Smith">
<input type="submit" id="copy-down" value="copy">
</form>
<form>
<input name="file" value="2.xml">
<input name="title" id="title" value="Anderson">
<input type="submit" id="copy-down" value="copy">
</form>
etc...
In this case when the top "copy" button is clicked I would like jquery to overwrite Anderson with Smith.
$('#title').attr('value'));
Gives me Smith but I'm not sure what to do with that value once I have it.
Change HTML to this:
<form>
<input name="file" value="1.xml">
<input name="title" id="title1" value="Smith">
<input type="submit" id="copy-down1" value="copy">
</form>
<form>
<input name="file" value="2.xml">
<input name="title" id="title2" value="Anderson">
<input type="submit" id="copy-down2" value="copy">
</form>
Javascript:
function copyHandler() {
var copyVal = document.getElementById("title1").value;
var replaceInput = document.getElementById("title2");
replaceInput.value = copyVal;
}
document.getElementById("copy-down1").onclick = function(){
copyHandler();
return false;
}
Some notes:
This is so straightforward in vanilla javascript that I didn't add the jQuery code.
You should never assign multiple elements to the same ID, class or name can be used for that purpose.
The return false; portion of the onclick function is necessary so that the form doesn't reload when you click your submit button.
Let me know if you have any questions.
you can try
$(document).ready(function(){
$('form').on('submit', function(e){
e.preventDefault();
var GetNameAttr = $(this).find('input:nth-child(2)').attr('name');
var GetTitleValue = $(this).find('input:nth-child(2)').val();
var NextFormNameAttr = $(this).next('form').find('input:nth-child(2)').attr('name');
if(NextFormNameAttr == GetNameAttr){
$(this).next('form').find('input:nth-child(2)').val(GetTitleValue );
}
});
});
Note: this code will change the second input value in next form with
the second input value of form you click if the name is same .. you
can do the same thing with the first input by using :nth-child(1)
Demo here
if your forms dynamically generated use
$('body').on('submit','form', function(e){
instead of
$('form').on('submit', function(e){
for simple use I create a function for that
function changeNextValue(el , i){
var GetNameAttr1 = el.find('input:nth-child('+ i +')').attr('name');
var GetTitleValue1 = el.find('input:nth-child('+ i +')').val();
var NextFormNameAttr1 = el.next('form').find('input:nth-child('+ i +')').attr('name');
if(NextFormNameAttr1 == GetNameAttr1){
el.next('form').find('input:nth-child('+ i +')').val(GetTitleValue1);
}
}
use it like this
changeNextValue($(this) , nth-child of input 1 or 2);
// for first input
changeNextValue($(this) , 1);
// for second input
changeNextValue($(this) , 2);
Working Demo
I am creating a set of textboxes dynamically while pressing (+) button, by cloning the following HTML template:
<div id= "other_leaders" class="controls form-input">
<input type="text" name="other_leader_fname[]" class="input_bottom other_leader_fname" id="other_leader_fname" placeholder="First Name" value="'.$val[0].'" />
<input type="text" name="other_leader_lname[]" class="input_bottom other_leader_lname" id="other_leader_lname" placeholder="Last Name" value="'.$val[1].'" />
<input type="text" name="other_leader_email[]" class="other_leader_email" id="other_leader_email" placeholder="Email Address" value="'.$val[2].'" />
<input type="text" name="other_leader_org[]" class="other_leader_org" id="other_leader_org" placeholder="Organisation/College" value="'.$val[3].'" />
<span class="remove btn"><i class="icon-minus"></i></span>
</div>
I am able to do single textbox validation by following code:
$("input[name*='other_leader_fname']").each(function(){
if($(this).val()=="" || !RegExpression.test($(this).val()))
{
$(this).addClass('custom-error')
fnameflag = 0;
}
});
Now my question is how to do empty validation for all four textboxes, if any one textbox field is filled by the user in that particular textbox group.
for example: if i enter values in the <div> with id other_leader_fname, then it should perform empty validation for other three textboxes of this particular group.
how can i do it?
Try this , You can apply your validation rules to all the text box in the div by using following code:
$("#other_leaders :input[type='text']").each(function(){
if($(this).val()=="" || !RegExpression.test($(this).val()))
{
$(this).addClass('custom-error')
fnameflag = 0;
}
});
As you have just one element so there is no need to have a loop over it:
var $othLeader = $("input[name*='other_leader_fname']");
if($othLeader.val()=="" || !RegExpression.test($othLeader.val())){
$(this).addClass('custom-error');
fnameflag = 0;
}
And if you have form then you can validate this in your form's submit function.
You can iterate over the .controls using the each() and check for filled inputs in each group using filter for performing the validation as follows:
$('.controls').each(function(){
var $inputs = $(this).find('input');
var filled = $inputs.filter(function(){
return this.value != "";
});
if(filled.length){
$inputs.each(function(){
if($(this).val()=="" || !RegExpression.test($(this).val()))
{
$(this).addClass('custom-error')
fnameflag = 0;
}
})
}
});
Demo
side note: since the above is a template for dynamically generated content, You should remove the id and use class instead since id should be unique in a document.
i have some html code like this
<form name="first"><input name="firstText" type="text" value="General" />
<input name="secondText" type="text" value="General" />
<input name="ThirdText" type="text" value="General" />
<input name="FourthText" type="text" value="General" />
<input name="FifthText" type="text" value="General" />
</form>
<form name="second"><input name="firstText" type="text" value="General" />
<input name="secondText" type="text" value="General" />
<input name="ThirdText" type="text" value="General" />
<input name="FourthText" type="text" value="General" />
<input name="FifthText" type="text" value="General" />
</form>
i want to select "secondText" of form "second" using jquery or javascript and i want to change value of it using jquery.
Using jQuery:
var element = $("form[name='second'] input[name='secondText']");
Using vanilla JS:
var element = document.querySelector("form[name='second'] input[name='secondText']");
Changing the value: element.val(value) or element.value = value, depending of what you are using.
To the point with pure JS:
document.querySelector('form[name=particular-form] input[name=particular-input]')
Update:
This selector will return the input named "particular-input" inside form named "particular-form" if exists, otherwise returns null.
The selector filter "form[name=particular-form]" will look for all forms with name equals "particular-form":
<form name="particular-form">
The selector filter "input[name=particular-input]" will look for all input elements with name equals "particular-input":
<input name="particular-input">
Combining both filters with a white space, I mean:
"form[name=particular-name] input[name=particular-input]"
We are asking for querySelector(): Hey, find all inputs with name equals "particular-input" nested in all forms with name equals "particular-form".
Consider:
<form name="particular-form">
<input name="generic-input">
<input name="particular-input">
</form>
<form name="another-form">
<input name="particular-input">
</form>
<script>
document.querySelector('form[name=particular-form] input[name=particular-input]').style.background = "#f00"
</script>
This code will change the background color only of the second input, no matter the third input have same name. It is because we are selecting only inputs named "particular-input" nested in form named "particular form"
I hope it's more clear now.
;)
By the way, unfortunately I didn't found good/simple documentation about querySelector filters, if you know any reference, please post here.
// Define the target element
elem = jQuery( 'form[name="second"] input[name="secondText"]' );
// Set the new value
elem.val( 'test' );
Try
$("form[name='second'] input[name='secondText']").val("ENTER-YOUR-VALUE");
You can do it like this:
jQuery
$("form[name='second'] input[name='secondText']").val("yourNewValue");
Demo: http://jsfiddle.net/YLgcC/
Or:
Native Javascript
Old browsers:
var myInput = [];
myInput = document.getElementsByTagName("input");
for (var i = 0; i < myInput.length; i++) {
if (myInput[i].parentNode.name === "second" &&
myInput[i].name === "secondText") {
myInput[i].value = "yourNewValue";
}
}
Demo: http://jsfiddle.net/YLgcC/1/
New browsers:
document.querySelector("form[name='second'] input[name='secondText']").value = "yourNewValue";
Demo: http://jsfiddle.net/YLgcC/2/
You can try this line too:
$('input[name="elements[174ec04d-a9e1-406a-8b17-36fadf79afdf][0][value]"').mask("999.999.999-99",{placeholder:" "});
Add button in both forms. On Button click find nearest form using closest() function of jquery. then using find()(jquery function) get all input values. closest() goes in upward direction in dom tree for search and find() goes in downward direction in dom tree for search. Read here
Another way is to use sibling() (jquery function). On button click get sibling input field values.
Purpose is to have checkboxes disabled when the page loads, and remain greyed out until textbox is filled.
<input type="text" name="<%=commentID%>" />
<input type="checkbox" name="<%=SkipID%>" value="N" disabled/>
I tried to do something like
<input type="text" name="<%=commentID%>" onkeyup="userTyped('<%=SkipID%>') />
function userTyped(commen){
if(this.value.length > 0){
document.getElementById(commen).disabled=false;
}else{
document.getElementById(commen).disabled=true;
}
}
But it did not work. I am assuming because of the inconsistency of the name, but I have to have that.
You haven't given id to your html elements and is trying to use getElementById, which will return null. Javascript engine will not be able to set disabled attribute of null. Try setting id attribute, for elements as given below.
Also in your userTyped function you are referencing this. this here is the window object and not the input element. You need to pass the reference to input element to make this work, like this onkeyup="userTyped('<%=SkipID%>', this)"
Please find a possible correction below:
<input type="text" name="<%=commentID%>" id="<%=commentID%>" onkeyup="userTyped('<%=SkipID%>', this)" />
<input type="checkbox" name="<%=SkipID%>" id="<%=SkipID%>" value="N" disabled/>
/** commen is the id
* e is the input element
**/
function userTyped(commen, e){
if(e.value.length > 0){
document.getElementById(commen).disabled=false;
}else{
document.getElementById(commen).disabled=true;
}
}
jsFiddle here: http://jsfiddle.net/deepumohanp/dGS9H/