This question already has answers here:
How do I determine if a checkbox is checked?
(8 answers)
Closed 8 years ago.
I have a input checkbox, i want to run different block of code, when checkbox is ticked & vice versa.
function checkboxEvent(){
if checked{ ....Run this block }
else { ....Run this block }
}
How to identify in function whether checkbox is checked or not?
Like this:
if(document.getElementById('id of the check box here').checked){
// it is checked. Do something
}
else{
// it isn't checked. Do something else
}
.checked property returns a boolean indicating whether the element is checked or not.
you can check check box value as follows
document.getElementById("myCheck").checked
So your function would be something like ..
function checkboxEvent(){
if (document.getElementById("myCheck").checked){ ....Run this block }
else { ....Run this block }
}
its very easy to find checked property, just use below code
if( $('input[name="transport"]').is(':checked') ) {
alert('checked');
alert($(this).attr('id'));//To get ID of checkBox
}
You might want to check the checked property when the check box is clicked, do:
// onchange event listens when the checkbox's state is changed
document.getElementById('box').onchange = function(){
if(this.checked) alert("y");
else alert("no");
};
DEMO
.checked is a boolean indicating state of checkbox.
< input type="checkbox id="remember" >
<script>
var remember = document.getElementById('remember');
if (remember != null && remember.checked){
alert("checked") ;
}else{
alert("You didn't check it! Let me check it for you.")
}
</script>
Try this :
function checkboxEvent() {
var boxes = document.getElementsByName("chkbox");
for (i = 0; i < boxes.length; i++) {
if (boxes[i].checked) {
console.log(" Checked!");
} else {
console.log("not checked");
}
}
}
The for loop will look up through all of your checkboxes and see if they are checked.
Alternatively, you can use .hasAtrribute .You can find more info about .hasAttribute here
Related
This question already has answers here:
jQuery checkbox change and click event
(20 answers)
Closed 5 years ago.
if(!$('input:value').is(:checked)){
//do something
}
How do i do this, i can´t find an example?
I want to know if a checkbox with a specific value has been checked.
loop through checkboxex
and then check as below
var c=$(".commonclassname");
for(var i=0;i<c.length;i++)
{
if(c[i].value=="your value")
{
//matched...
}
}
Here's how to detect if a checkbox with a particular value gets unchecked
$("input[type=checkbox]").click(function() {
if ($(this).val() == "test2" && !$(this).is(":checked")) {
alert("Unchecked Test2");
}
});
Fiddle: https://jsfiddle.net/vwm28b7u/1/
I have a jquery function for multiple delete.
$('input.delete-selected[type="submit"]').attr('disabled','disabled');
$('[id^=partners_], [id^=invitations_], [id^=clients_], [id^=partner_services_], [id^=partner_products_]').on("click", function (event) {
if ($(this).is(":checked")) {
$('input.delete-selected[type="submit"]').removeAttr('disabled');
} else {
$('input.delete-selected[type="submit"]').attr('disabled', 'disabled');
}
})
The problem is, if I have 2 items, select both and then deselect one of them, the 'delete' button disables again.
How can I disable the button only if no checkbox is checked?
Do I have to implement an each function?
Use prop():
$('input.delete-selected[type="submit"]').prop('disabled', ($('[id^=partners_]:checked, [id^=invitations_]:checked, [id^=clients_]:checked, [id^=partner_services_]:checked, [id^=partner_products_]:checked').length == 0));
This will disable the button depending on the second parameter evaluation state.
If it is true, button will be disabled, if not button will be enabled.
$('[id^=partners_]:checked, [id^=invitations_]:checked, [id^=clients_]:checked, [id^=partner_services_]:checked, [id^=partner_products_]:checked').length will get the number of checkboxes checked.
Try this : get all checkbox selector in one variable and bind the click event to it. Inside click handler see if any of the checkbox is checked then enable / disable the button accordingly. Use .prop() instead of .attr()
$('input.delete-selected[type="submit"]').attr('disabled','disabled');
var $checkbox = $('[id^=partners_], [id^=invitations_], [id^=clients_], [id^=partner_services_], [id^=partner_products_]');
$($checkbox).on("click", function (event) {
$('input.delete-selected[type="submit"]').prop('disabled', $checkbox.is(':checked').length==0);
});
You can use a variable flag to count how much checkbox is checked, if atleast one is checked then remove disabling else you know.
$('input.delete-selected[type="submit"]').attr('disabled','disabled');
$('[id^=partners_], [id^=invitations_], [id^=clients_], [id^=partner_services_], [id^=partner_products_]').on("click", function (event) {
var flag = 0; //HERE IS THE VARIABLE
if ($(this).is(":checked")) {
flag += 1; //HERE
} else {
flag -= 1; //HERE
}
});
if(flag <= 0)
{
$('input.delete-selected[type="submit"]').attr('disabled', 'disabled');
}
else {
$('input.delete-selected[type="submit"]').removeAttr('disabled');
}
$('input.delete-selected[type="submit"]').attr('disabled','disabled');
$('[id^=partners_], [id^=invitations_], [id^=clients_], [id^=partner_services_], [id^=partner_products_]').on("click", function (event) {
if ($(this).siblings().andSelf().prop("checked").length > 0) {
$('input.delete-selected[type="submit"]').removeAttr('disabled');
} else {
$('input.delete-selected[type="submit"]').attr('disabled', 'disabled');
}
})
I want to validate the input on a series of checkboxes. There must be at least one checkbox selected, otherwise the user gets an alert to select one. However, the alert appears unless all of the checkboxes are selected.
I realize that the issue is how my for loop params are set, but I cannot figure out how to fix it.
for(var i=0;i<7;i++){
if( !checkboxes[i].checked ){
alert( 'You need to select at least one day!');
checkboxes[i].focus();
return false;
}
}
You can use a flag to set the validation status and set it to true if atleast 1 item is checked.
Then after the loop check whether the flag is set else there are no checkboxes selected.
var valid = false;
for (var i = 0; i < checkboxes.length; i++) {
if (checkboxes[i].checked) {
valid = true;
break;
}
}
if (!valid) {
alert('You need to select at least one day!');
checkboxes[0].focus();
return false;
}
You want to do the opposite of what you're coding. your current code flashes the alert if the current checkbox is not checked, that is, if ANY checkbox is not checked. you can modify it to something like this:
var isChecked = false;
for(var i=0;i<7;i++){
if( checkboxes[i].checked ){
isChecked = true;
}
}
if ( !isChecked ) {
alert( 'You need to select at least one day!');
checkboxes[0].focus();
return false;
}
var clicked = false;
$(".CheckBoxClass").each(function () {
if($(this).checked ) clicked = true;
}
if(clicked)
return true;
else ...
Hey all. I've been been trying to figure this out for a while now.
I create a jQuery object of checkboxes and store it in a variable:
$group1 = $('#checkbox1,#checkbox2,#checkbox3,#checkbox4');
The user cannot continue unless all checkboxes in that group are checked.
I've been using an if statement combined with .is(':checked') to find a boolean value:
if( $group1.is(':checked') ){
//continue is OK
}
...but .is(':checked') will return TRUE if any checkboxes are checked within the group. Essentially, .is(':checked') performs an OR operation on the selected elements in $group1. I'm looking for an AND operation, so all selected elements must be checked to return TRUE. Is there a jQuery function that does this, or another workaround?
#Adam is off just a bit
if( $group1.filter(':not(:checked)').length === 0){
//continue is OK
}
Corrected:
You could filter to get only the elements that are not checked, and then check to see if any are any elements still in the collection, if there are not than all the elements in the group are checked:
if( $group1.filter(':not(:checked)').length === 0){
//continue is OK
}
I think you need something like:
$(document).ready(function(){
var checked = true;
$('input:checkbox').each(function(){
if(checked){
checked = $(this).is(':checked');
}
});
});
This should set checked = false if any of them are unchecked.
I would suggest that you give your checkboxes a a class then
var len = $('.check_needed').length;
var chk = $('.check_needed:checked').length;
if (len == check){
//carry on
}else{
// go home
}
You can use also
$(function(){
// add multiple select / deselect functionality
$("#selec_all_chk").click(function () {
$('.chk_class').attr('checked', this.checked);
});
// if all checkbox are selected, check the selectall checkbox
// else uncheck
$(".chk_class").click(function(){
if($(".chk_class").length == $(".chk_class:checked").length) {
$("#selec_all_chk").attr("checked", "checked");
} else {
$("#selec_all_chk").removeAttr("checked");
}
});
});
Im trying to make this function to check an element and if its checked, or not, add or remove respective className. Also, if the element is disabled but is checked, it should un-check it and remove the className('yes')
function init() {
$(document.body).select('input').each(function(element) {
if (!element.checked) {
element.up().removeClassName('yes');
} else {
element.up().addClassName('yes');
}
if (element.checked && element.disabled) {
element.checked = false;
element.up().removeClassName('yes')
}
});
}
Right now, the last part, is not working, no effect
Did you try element.checked = !element.checked in the last part instead of element.checked = false?