I am trying to validate a form.
What I am trying to do is validate the form by validating the Option display text not the option value, since the option values are int
Example:
<option value="selectcard">Please select</option>
If user clicks submit the form should validate if the option display says Please Select
regardless of what the option value is.
Code which is not working
function fun(){
$('#cardtype').change(function () {
var sel = $('option:selected', this).text();
if (sel == "Please select") {
$('.showotherpDescription').show();
} else {
}
});
}
Not working: http://jsfiddle.net/f5hxpo7g/2/
Also including the regular working example for validating the form based on option value
Validates Based on option value http://jsfiddle.net/f5hxpo7g/1/
Please let me know what i am doing wrong.
Thanks in advance.
Your function should be like this:
function fun()
{
var ddl = document.getElementById("cardtype");
var valor = ddl.options[ddl.selectedIndex].text;
if (valor == "--- Please select ---")
{
alert("Please select a card type");
}
}
Working fiddle:http://jsfiddle.net/robertrozas/XFtBD/169/
I fixed it, you should use this JS:
$(function () {
$('#subbutton').click(function () {
if ($('#cardtype option:selected').text() === "Please select")
{
alert("PLEASE SELECT");
}
});
});
And remove onclick="..." from the button, you don't need it. Also add id="subbutton.
Here's the working JSFiddle.
I checked out the jsfiddle you referenced and modified it slightly to make it work, you can see it here.
The issue with the code you provided is, IMO:
An issue with the purpose of your function (validation) and the event you're subscribing the code to (the combo selection changed event)
The way you're obtaining the text from the currently selected option, you should create the selector based on the element that contains the options, otherwise, if you have more than 1 combo in your page, you will get lots of values (one for each selected option).
Check out the code in the jsfiddle i provided and let me know if you need more information.
For reference, here is the code i used:
HTML:
<label class="paylabel" for="cardtype">Card Type:</label>
<select id="cardtype" name="cards">
<option value="selectcard">--- Please select ---</option>
<option value="mastercard">Mastercard</option>
<option value="maestro">Maestro</option>
<option value="solo">Solo (UK only)</option>
<option value="visaelectron">Visa Electron</option>
<option value="visadebit">Visa Debit</option>
</select>
<input type="button" onclick="fun()" value="click here">
JS:
function fun(){
var cmb = document.getElementById('cardtype');
var sel = cmb.options[cmb.selectedIndex].text;
if (sel == "--- Please select ---") {
alert('Please select a different option');
//$('.showotherpDescription').show();
} else {
}
}
}
Related
I do have a form with a variable amount of dropdowns I want to check, if something is selected before submit.
What I have is this javascript, but it works for the 1st dropdown only.
var ddl = document.getElementById("status");
var selectedValue = ddl.options[ddl.selectedIndex].value;
if (selectedValue == "")
{
alert("Machine status must be selected");
return false;
}
for this dropdown (this comes from a loop so I have a variable amount of them within the form)
<select name="mstatus[]" id="status">
<option value="">please select</option>
<option value="status1">ok</option>
<option value="status2">not ok</option>
</select>
Any hint in the right direction, much appreciated. thanks
I would suggest giving the selects you wish to iterate through the same class and use Jquerys .each(). https://api.jquery.com/each/
For the validation I would use a data tag to help you with the alert label
<select class="form-select" data-label="Machine status"></select>
Then the JS code
$('.form-select').each(function(index, element) {
let value = $(element).val();
let label = $(element).data("label");
if (value === "") {
alert(`${label} status must be selected`);
return false;
}
});
Without Jquery you could do.
document.querySelectorAll('.form-select').forEach(function (element, index) {
//do same code here
});
I have a select box like so:
<select id="update_type_picker" name="update_type_picker">
<option value="play">Played</option>
<option value="play">playing</option>
<option value="want">Want</option>
<option value="rating">Rate</option>
</select>
And an input like this:
<input id="playing" name="playing" type="hidden">
And I'm trying to make this jquery work:
$(document).ready(function () {
$("select#update_type_picker").change( function() {
var text = this.text;
if (text = "playing") {
$("input#playing").attr('value', '1');
} else {
$("input#playing").attr('value', '');
}
});
});
I need to use text (not value) because two of the values are the same. With the jquery above the input value changes to 1 regardless of which option I choose. How can I make this work they way I need it to? Thanks!
You have to use:
var text = $(this).find("option:selected").text();
And as mentioned in a comment, you have to use == or === to compare strings in the if, not =.
I have a select list:
Choose a Story:</br>
<select name="Book" id="book">
<option value="empty" selected disabled></option>
<option value="Book1">Book1</option>
<option value="Book2">Book2</option>
<option value="Book3">Book3</option>
<option value="Book4">Book4</option>
</select><br><br>
I got the script to work to display the chosen item onchange below the options thanks to some assistance from other stackoverflow users. But it only states what option is chosen instead of getting it to say "You chose _." after something other than the blank option is chosen.
<script>
$('#book').on('change', function() {
$('#result_element').text(this.value);
});
</script>
<script>
if ((document.getElementsByTagName("book")this.value) != empty)
{
document.write("You chose ")
}
</script>
<span id="result_element"></span>
Basically, I want it to show the "You chose __." after they select something.
a) You will need to do it in the event handler. Otherwise the code is executed when the page is loaded (and not again), instead of after the user has chosen an option
b) Do not use document.write!
<script>
$('#book').on('change', function() {
var output = "";
if (this.value != "empty") {
output = "You chose " + this.value;
}
$('#result_element').text(output);
});
</script>
<span id="result_element"></span>
It's possible to create a select input with a button or a link inside the options? I'd like to use it to list some values, and to have the option with a button to "Create Value" inside the options. I don't know if this is possible. I tried it with a href, but it treat it as text.
This would be the ideal scenario:
<select name="things">
<option value="1">Thing One</option>
<option value="2">Thing Two</option>
<option value="3">Thing Three</option>
<option value=""><button>New Thing</button></option>
</select>
I've search, but with no luck. Does somebody knows an jQuery plugin or something like might work?
Here's a simple implementation:
$('select[name=things]').change(function() {
if ($(this).val() == '')
{
var newThing = prompt('Enter a name for the new thing:');
var newValue = $('option', this).length;
$('<option>')
.text(newThing)
.attr('value', newValue)
.insertBefore($('option[value=]', this));
$(this).val(newValue);
}
});
Of course, this could be done better, and more cleanly, but it's a start.
Demonstration
After reading your comments, it appears you simply want to redirect the user to another form when they select a given option. In that case, you can simply do this:
$('select[name=things]').change(function() {
if ($(this).val() == '')
{
window.location.href = 'CreateThingForm'; // Replace with the actual URL
}
});
You shouldn't do it this way, don't put button inside option.
alternatively you can :
<select name="things" onchange="checkAndAddOption(this)">
or
<select name="things" onclick="checkAndAddOption(this)">
.
.
.
</select>
<script>
function checkAndAddOption(selectElement) {
if (selectElement.value === "") {
var opt = document.createElement('option');
opt.value = 'newVal';
opt.innerHTML = 'textToDisplay';
selectElement.appendChild(opt);
}
}
</script>
I have a form with validation, but im looking for a way to allow a check box to force a value for a form field so the validation will not see it as blank once the check box is clicked.
I currently have:
if (document.drop_list.Make.value == "")
{
message = message + "Make is missing\n";
valid = false;
}
I also have a check box, with this function:
// add event handler to checkbox
element.addEventListener('change', function() {
// inside here, this refers to the checkbox that just got changed
textbox = document.getElementById('textbox_1');
textbox.disabled = this.checked;
Can I add something to that function to force a value for:
<SELECT class="enteredMake" onchange=SelectModel(); name=Make id="textbox_2">
<OPTION selected value="">Vehicle Make</OPTION>
</SELECT>
This way, it wont be blank, it would be, say "Checked"
allowing the validation to pass?
So are you looking for something that will set the value of a select box once a checkbox has been ticked? For example:
selectbox = document.getElementById('myselectbox');
checkbox = document.getElementById('mycheckbox');
checkbox.addEventListener('change', function() {
selectbox.value = "1"
});
HTML:
<input type="checkbox" id="mycheckbox" />
<select id="myselectbox">
<option value="-1">Please select...</option>
<option value="1">1</option>
</select>
JSFiddle