Can anyone please tell me how to disable a textbox, if a checkbox is checked, and enable textbox if the checkbox is not checked?
Put this in the checkbox:
onclick="document.getElementById('IdOfTheTextbox').disabled=this.checked;"
<input type="text" id="textBox">
<input type="checkbox" id="checkBox" onclick="enableDisable(this.checked, 'textBox')">
<script language="javascript">
function enableDisable(bEnable, textBoxID)
{
document.getElementById(textBoxID).disabled = !bEnable
}
</script>
jQuery(document).ready(function () {
$("#checkBox").click(function () {
$('#textBox').attr("disabled", $(this).is(":checked"));
});
});
Create a Javascript function like this:
function EnableTextbox(ObjChkId,ObjTxtId)
{
if(document.getElementById(ObjChkId).checked)
document.getElementById(ObjTxtId).disabled = false;
else
document.getElementById(ObjTxtId).disabled = true;
}
Create a C# function like this on the grid RowDataBound:
protected void lstGrid_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
TextBox txtAllowed = (TextBox)e.Row.FindControl("txtAllowed");
CheckBox chkAllowed = (CheckBox)e.Row.FindControl("RowSelector");
chkAllowed.Attributes.Add("onClick", "EnableTextbox('" + chkAllowed.ClientID + "', '" + txtAllowed.ClientID + "')");
}
}
I have the simplest solution yet for this Simple task.
Believe me or not it works
s = 1;
function check(){
o = document.getElementById('opt');
if(o.value=='Y'){
s++;
if(s%2==0)
$('#txt').prop('disabled',true);
else
$('#txt').prop('disabled',false);
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Text: <input type="text" name="txt" id="txt">
<input type="checkbox" name="opt" id="opt" value="Y" onclick="check()">
Here is code.
<script type="text/javascript">
function EnableDisableTextBox(chkPassport) {
var txtPassportNumber = document.getElementById("txtPassportNumber");
txtPassportNumber.disabled = chkPassport.checked ? false : true;
if (!txtPassportNumber.disabled) {
txtPassportNumber.focus();
}
}
</script>
<label for="chkPassport">
<input type="checkbox" id="chkPassport" onclick="EnableDisableTextBox(this)" />
Do you have Passport?
</label>
<br />
Passport Number:
<input type="text" id="txtPassportNumber" disabled="disabled" />
Using jQuery:
$("#checkbox").click(function(){
$("#textbox")[0].disabled = $(this).is(":checked");
});
Related
I have a checkboxs 3-4 of them, when the user checks the checkbox I want to add the value of the checkbox to the array, if they uncheck the box I want to remove the item from the array, this is what I got so far:
$('ul.dropdown-menu input[type=checkbox]').each(function () {
$(this).change(function () {
if ($(this).attr("id") == 'price') {
if (this.checked) {
priceArray.push($(this).val());
}
else {
priceArray = jQuery.grep(priceArray, function (value) {
return value != $(this).val();
});
}
}
});
});
Adding the value to the array works perfectly, however removing items results in this error:
Cannot read property 'toLowerCase' of undefined
on this line:
return value != $(this).val();
Run the code snippet and check
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script>
var priceArray=[];
$(document).ready(function(){
$('input[type=checkbox]').each(function () {
$(this).change(function () {
if (this.checked) {
priceArray.push($(this).val());
$("#displayarray").html("array=[" + priceArray+"]");
}
else {
var index = priceArray.indexOf($(this).val());
if (index > -1) {
priceArray.splice(index, 1);
}
$("#displayarray").html("array=[" + priceArray+"]");
}
});
});
});
</script>
<input type="checkbox" value="box1"/>box1
<input type="checkbox" value="box2"/>box2
<input type="checkbox" value="box3"/>box3
<input type="checkbox" value="box4"/>box4
<br/>
<div id="displayarray"></div>
Replace
priceArray = jQuery.grep(priceArray, function (value) {
return value != $(this).val();
});
By
val = $(this).val();
priceArray = jQuery.grep(priceArray, function (value) {
return value != val;
});
Don't forget the scope where your are in the callback function.
You can try using filter instead of $.grep:
var values = [];
$("input").on("change", function()
{
var $this = $(this);
if ($this.is(":checked"))
{
values.push($this.val());
}
else
{
values = values.filter(x => x != $this.val());
}
console.log(values);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="checkbox" value="1" />
<input type="checkbox" value="2" />
<input type="checkbox" value="3" />
<input type="checkbox" value="4" />
<input type="checkbox" value="5" />
<input type="checkbox" value="6" />
<input type="checkbox" value="7" />
filter() is a native function, I prefer using built-in function rather than 3rd party's, IMO. Also, avoid binding events within loops like this:
$('ul.dropdown-menu input[type=checkbox]').each(function () {
$(this).change(function () {
Use this method:
$('ul.dropdown-menu').on('change', 'input[type=checkbox]', function() { ...
This will work even if checkbox is dynamically added.
You could do this very cleanly with a functional style
<div class="checkboxes">
<input type="checkbox" value="1" />
<input type="checkbox" value="2" />
</div>
And
(function() {
$(".checkboxes input[type=checkbox]").on("click", function() {
var x = $(".checkboxes input[type=checkbox]:checked").map(function(a,b) {
return parseFloat(b.value);
}).toArray();
console.log(x)
});
})();
I had a similar situation and I was able to overcome it in the following way :
My jQuery :
$(document).ready(function(){
$("#dataFilterForm").on("input", function() {
var values = '';
var boxes = $('input[name=vehicle]:checked');
boxes.each(function(b){
values = values + boxes[b].id + ', ';
});
$('#filterResult').text(values.substring(0, values.length-2));
});
});
My HTML :
<form id="dataFilterForm">
<input type="checkbox" id="Filter1" name="vehicle" value="Bike">
<label for="Filter1">Filter1</label><br>
<input type="checkbox" id="Filter2" name="vehicle" value="Car">
<label for="Filter2">Filter2</label><br>
<input type="checkbox" id="Filter3" name="vehicle" value="Boat">
<label for="Filter3">Filter3</label><br>
</form>
<p>Result : </p>
<p id="filterResult"></p>
the radio listed are disabled, now i want to enable them when the checkbox is checked, and will be disabled when unchecked.
<p>1.0 Educational Qualification</p>
<p><input type="checkbox" id="chk" name="chk"/>1.1 Highest relevant academic degree or educational attainment</p>
<p><input type="radio" name="educationalqualification" disabled="true"/>Doctorate</p>
<p><input type="radio" name="educationalqualification" disabled="true"/>Master's Degree</p>
<p><input type="radio" name="educationalqualification" disabled="true"/>LLB and MD</p>
<p><input type="radio" name="educationalqualification" disabled="true"/>Diploma Course (Above Bachelor's Degree)</p>
<p><input type="radio" name="educationalqualification" disabled="true"/>Bachelor's Degree</p>
</body>
Try this:
$(document).ready(function(){
$('#chk').click(function () {
if($(this).prop('checked')){
$('input[name=educationalqualification]').attr("disabled",false);
}
else {
$('input[name=educationalqualification]').attr("disabled",true);
}
});
});
demo
And Vanilla:
function toggle(checked) {
var names = document.getElementsByName("educationalqualification");
for (var i = 0; i <= names.length - 1; i++) {
names[i].disabled = !checked;
names[i].checked = false;
}
}
var check = document.getElementById("chk");
check.addEventListener("click", function () {
toggle(this.checked)
});
JSFiddle
try this
<script>
$(document).ready(function(){
$("input[type='checkbox']").click(function(){
if($(this).is(":checked"))
{
$("input[type='radio']").prop("disabled",false);
}
else
{
$("input[type='radio']").prop("disabled",true);
$("input[type='radio']").prop("checked",false);
}
});
});
</script>
SEE FIDDLE DEMO
I have 2 radio button ie yes and no. When I select yes the text box as to get enabled. When i click no the text box as to be disabled. How to enable the text box when I click on Yes. Here is the code. Please tel me how to enable and disable it using javascript.
<script type="text/javascript">
$(function() {
$("#XISubmit").click(function(){
var XIyop= document.forms["XIForm"]["XIyop"].value;
var XIForm = $('form[name=XIForm]');
var XIAlmnus = XIForm.find('input[name=XIAlmnus]:checked').val();
if (XIAlmnus == null || XIAlmnus == "")
{
alert("Please select Parent is an Alumnus (old Boy) of this school");
return false;
}
document.getElementById("XIForm").submit();
});
</script>
<!-- html code-->
<html>
...
<label>Parent is an Alumnus (old Boy) of this school </label>   
<input type='radio' name='XIAlmnus' value='Yes' id="XIyes"/>Yes
<input type='radio' name='XIAlmnus' value='No' id="XIno"/>No</td>
<label>If Yes, Year of passing </label>   
<input type="textbox" name="XIyop" id="XIyop" >
...
</html>
I think, you should use some general handler for this: http://jsfiddle.net/maximgladkov/MvLXL/
$(function() {
window.invalidate_input = function() {
if ($('input[name=XIAlmnus]:checked').val() == "Yes")
$('#XIyop').removeAttr('disabled');
else
$('#XIyop').attr('disabled', 'disabled');
};
$("input[name=XIAlmnus]").change(invalidate_input);
invalidate_input();
});
first make the text box disabled.
<input type="textbox" name="XIyop" id="XIyop" disabled>
When radio button clicked, check and enable it.
if(document.getElementById('XIyes').checked) {
document.getElementById("XIyop").disabled = false;
}else if(document.getElementById('XIno').checked) {
document.getElementById("XIyop").disabled = true;
}
$(function() {
$('input[name="XIAlmnus"]').on('change', function() {
if ($(this).val() == 'Yes') {
$("#XIyop").prop('disabled', false);
} else {
$("#XIyop").prop('disabled', true);
}
});
});
<input type="textbox" name="XIyop" id="XIyop" disabled>
if(document.getElementById('XIyes').attr('checked')) {
document.getElementById("XIyop").disabled = 'true';
}
if(document.getElementById('XIno').attr('checked')) {
document.getElementById("XIyop").disabled = 'false';
}
HTML:
<label>Parent is an Alumnus (old Boy) of this school </label>   
<input type='radio' name='XIAlmnus' value='Yes' id="XIyes"/>Yes
<input type='radio' name='XIAlmnus' value='No' id="XIno"/>No
<br/>
<label>If Yes, Year of passing </label>   
<input type="textbox" name="XIyop" id="XIyop" disabled>
JS:
document.getElementById('XIyes').onchange = displayTextBox;
document.getElementById('XIno').onchange = displayTextBox;
var textBox = document.getElementById('XIyop');
function displayTextBox(evt){
if(evt.target.value=="Yes"){
textBox.disabled = false;
}else{
textBox.disabled = true;
}
}
Please see working demo here. Thank you I hope this will help you.
This function alerts right totalqt only when I check checkboxes one by one. But doesn't work properly for #check_all: alerts totalqt = 0.
What I did wrong, can anyone explain?
var totalqt=0;
$('#check_all').click( function() {
$('.checkbox').click();
alert(totalqt);
} );
$('.checkbox').click(function(e) {
e.stopPropagation();
if($(this).closest("tr").not('#hdr').hasClass("row_selected")){
$(this).closest("tr").not('#hdr').removeClass("row_selected");
totalqt=totalqt - parseInt($(this).closest("tr").find("#qt").text(), 10);
}
else {
$(this).closest("tr").not('#hdr').addClass("row_selected");
totalqt=totalqt + parseInt($(this).closest("tr").find("#qt").text());
}
HTML looks like that
<tr>
...
<td><input type="checkbox" name="checkbox[]" method="post" value="" class="checkbox"/></td>
...
</tr>
actually when the checkbox is changed manualy it doesn't trigger handler. try something like this.
function doIt(obj){
if($(obj).closest("tr").not('#hdr').hasClass("row_selected")){
$(obj).closest("tr").not('#hdr').removeClass("row_selected");
totalqt=totalqt - parseInt($(obj).closest("tr").find("#qt").text(), 10);
}
else {
$(obj).closest("tr").not('#hdr').addClass("row_selected");
totalqt=totalqt + parseInt($(obj).closest("tr").find("#qt").text());
}
}
then
$('.checkbox').click(function(e) {
e.stopPropagation();
doIt(this);
});
and
$('#check_all').click( function() {
if($(this).prop('checked')){
$('.checkbox').each(function(){
$(this).prop('checked', true);
doIt(this);
alert(totalqt);
});
}else{
$('.checkbox').each(function(){
$(this).prop('checked', false);
doIt(this);
alert(totalqt);
});
}
} );
I have changed my answer to the following, try this:
<div class="checkall">
<input type="checkbox" id="checkall">
</div>
<div id="list">
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
</div>
and jquery:
var checkboxes = $(":checkbox", "#list").change(function() {
var allIsChecked = checkboxes.length === checkboxes.filter(":checked").length;
checkAll[0].checked = allIsChecked;
});
var checkAll = $("#checkall").change(function() {
checkboxes.prop("checked",this.checked);
});
How to get the checked option in a group of radio inputs with JavaScript?
<html>
<head>
<script type="text/javascript">
function testR(){
var x = document.getElementsByName('r')
for(var k=0;k<x.length;k++)
if(x[k].checked){
alert('Option selected: ' + x[k].value)
}
}
</script>
</head>
<body>
<form>
<input type="radio" id="r1" name="r" value="1">Yes</input>
<input type="radio" id="r2" name="r" value="2">No</input>
<input type="radio" id="r3" name="r" value="3">Don't Know</input>
<br/>
<input type="button" name="check" value="Test" onclick="testR()"/>
</form>
</body>
</html>
http://www.somacon.com/p143.php
If you need the actual element and not just the selected value, try this:
function findSelected(){
for (i=0;i<document.formname.radioname.length;i++){
if (document.formname.radioname[i].checked){
return document.formname.radioname[i];
}
}
}
generic functions (loosely based on yours )
function getRadioGroupSelectedElement(radioGroupName) {
var radioGroup = document.getElementsByName(radioGroupName);
var radioElement = radioGroup.length - 1;
for(radioElement; radioElement >= 0; radioElement--) {
if(radioGroup[radioElement].checked){
return radioGroup[radioElement];
}
}
return false;
}
function getRadioGroupSelectedValue(radioGroupName) {
var selectedRadio = getRadioGroupSelectedElement(radioGroupName);
if (selectedRadio !== false) {
return selectedRadio.value;
}
return false;
}