I have found this code online, and it is okay on Firefox and Chrome, but it doesn't work on IE, do anyone know how to fix it for IE?
the value of the button does toggle, but just the checkbox not able to change
<html>
<head>
<script type="text/javascript">
function do_this(){
var checkboxes = document.getElementsByName('approve[]');
var button = document.getElementById('toggle');
if(button.value == 'select'){
for (var i in checkboxes){
checkboxes[i].checked = 'FALSE';
}
button.value = 'deselect'
}else{
for (var i in checkboxes){
checkboxes[i].checked = '';
}
button.value = 'select';
}
}
</script>
</head>
<body>
<input type="checkbox" name="approve[]" value="1" />
<input type="checkbox" name="approve[]" value="2" />
<input type="checkbox" name="approve[]" value="3" />
<input type="button" id="toggle" value="select" onClick="do_this()" />
</body>
</html>
It is considered a best practice to put your handler in code and not in-line. You can save some code, and put the onclick handler in your code like so:
// add event handler
function init() {
document.getElementById('toggle').onclick = function () {
do_this(this);
};
}
window.onload = init;
// me is the button here
function do_this(me) {
var checkboxes = document.getElementsByName('approve[]');
for (var i = 0; i < checkboxes.length; i++) {
// toggle to what it is not
checkboxes[i].checked = !checkboxes[i].checked;
}
me.value = me.value == 'select' ? 'deselect' : 'select';
}
Sample fiddle to show it in action: http://jsfiddle.net/qK2qS/
You must pass a boolean value to the checked property. The other browsers are understanding your bizarre logic, and converting 'FALSE' to the boolean true (checking the box), and '' to false (unchecking it)
Use the actual true and false booleans, and it might just work ;)
Related
I have gone through the stackoverflow regarding enable/disable button conditionally and was able to find some help but NOT EXACT what I was looking for.
Instead of 1 checkbox condition, I have 2 checkbox conditions. So unless if the two checkboxes have been accepted, the button should not be enabled.
Following is my html:
<input type="checkbox" id="f_agree" value="1" onchange="checked(this, 'f_agree2')"/>
<input type="checkbox" id="f_agree2" value="1" onchange="checked('f_agree', this)"/>
<button type="submit" disabled="disabled" id="acceptbtn">Continue</button>
Following is javascript:
function checked(element1, element2) {
var myLayer = document.getElementById('acceptbtn');
if (element1.checked == true && element2.checked == true) {
myLayer.class = "submit";
myLayer.disabled = "";
} else {
myLayer.class = "button:disabled";
myLayer.disabled = "disabled";
};
}
I have tried like above, but it is not working. I don't know where I am going wrong.
it won't work because you are not removing that attribute disabled.
function checked(element1, element2) {
var myLayer = document.getElementById('acceptbtn');
if (element1.checked == true && element2.checked == true) {
myLayer.class = "submit";
myLayer.removeAttribute("disabled");
} else {
myLayer.class = "button:disabled";
myLayer.setAttribute("disabled","disabled");
};
}
Update
use any other name then checked as it seems to be reserved and not working.
you also need to do getElementById for element1 and element2.
function checkedFunc(element1Id, element2Id) {
var myLayer = document.getElementById('acceptbtn');
var element1 = document.getElementById(element1Id);
var element2 = document.getElementById(element2Id);
if (element1.checked == true && element2.checked == true) {
myLayer.class = "submit";
myLayer.removeAttribute("disabled");
} else {
myLayer.class = "button:disabled";
myLayer.setAttribute("disabled","disabled");
};
}
<input type="checkbox" id="f_agree" value="1" onchange="checkedFunc('f_agree', 'f_agree2')"/>
<input type="checkbox" id="f_agree2" value="1" onchange="checkedFunc('f_agree','f_agree2')"/>
<input type="button" value="check" id="acceptbtn" />
You can try the following code
if (element1.checked == true && element2.checked == true) {
myLayer.class = "submit";
myLayer.removeAttribute("disabled");
} else {
myLayer.class = "button:disabled";
myLayer.setAttribute("disabled", "disabled");
};
With jQuery:
var btn;
var changed = function() {
//get the length of non checked boxes
var disbl = $('input[id^=f_agree]:not(:checked)').length;
btn.prop('disabled', disbl);//disable if true, else enable
};
$(function() {
btn = $('#acceptbtn');
$('input[id^=f_agree]').on('change', changed).trigger('change');
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<input type="checkbox" id="f_agree" value="1" />1
<input type="checkbox" id="f_agree2" value="1" />2
<input type="button" id="acceptbtn" value="Submit" />
The problem is that there is a difference between the string "f_agree" and the node with id="f_agree".
Your code should work as expected with
checked(this, document.getObjectById('f_agree2'))
Much better would be however to avoid having a widget knowing about the other... I'd implement instead by adding a list of external rules that check all widgets:
function okSubmit() {
return (document.getElementById("f_agree").checked &&
document.getElementById("f_agree2").checked);
}
This is much easier to read/maintain and also scales better in case you need to add more conditions later. In the onchange of all the widgets just call a function that will enable/disable the submit button depending on the conditions.
Try this
if (element1.checked == true && element2.checked == true) {
myLayer.class = "submit";
myLayer.removeAttribute("disabled");
} else {
myLayer.class = "button:disabled";
myLayer.setAttribute("disabled", "disabled");
};
Try the below code -
var chk1 = document.getElementById('chk1');
chk1.addEventListener('click', checked, false);
var chk2 = document.getElementById('chk2');
chk2.addEventListener('click', checked, false);
function checked(){
if(chk1.checked && chk2.checked) {
document.getElementById('btn').removeAttribute('disabled');
} else {
document.getElementById('btn').setAttribute('disabled','disabled');
}
}
<input type="checkbox" id="chk1" />
<input type="checkbox" id="chk2" />
<button id="btn" disabled >Button<button>
I tested it and it's working! Hope it helps u...
I have three checkboxes. I am already using a piece of code I found here to uncheck the other two when one is checked.
function cbChange(obj) {
var cbs = document.getElementsByClassName("cb");
for (var i = 0; i < cbs.length; i++) {
cbs[i].checked = false;
}
obj.checked = true;
}
I use this inside the checkbox to toggle the state: onchange="cbChange(this)".
However, I also need to provide for a situation where I don't want any of the boxes ticked. While I can do this by adding a separate button or checkbox, I wanted to know if the above code can be modified or another function added that will allow to untick the already ticked box by an onclick event.
I tried adding this function (again found here) but it won't work:
function cbUncheck(obj)
{
if (obj.checked == false)
{
document.getElementByClassName("cb").checked = false;
}
}
I use this in the checkbox code: onclick="cbUncheck(this);"
Suggestions welcome!
Thanks!
you need to check first checkbox checked or not..
if checkbox is not checked then dont need to do anything
otherwise uncheck other checkboxes
<input id="chk1" class="cb" type="checkbox" value="01" onchange='cbChange(this)' />
<label for="chk1" >1</label>
<input id="chk2" class="cb" type="checkbox" value="01" onchange='cbChange(this)' />
<label for="chk2" >1</label>
<input id="chk3" class="cb" type="checkbox" value="01" onchange='cbChange(this)' />
<label for="chk3" >1</label>
javascript
function cbChange(obj) {
if(obj.checked)
{
var cbs = document.getElementsByClassName("cb");
for (var i = 0; i < cbs.length; i++) {
cbs[i].checked = false;
}
obj.checked = true;
}
}
JS BIN JSBIN EXAMPLE
You can use radio buttons so that only one can be selected (no script required for that). Then if some other condition occurs, clear both (below uses a button as an example):
<form>
<input type="radio" name="foo" value="0">zero<br>
<input type="radio" name="foo" value="1">one<br>
<button type="button" onclick="clearRadios(this.form.foo)">Clear radios</button>
</form>
And the function:
function clearRadios(radioGroup) {
for (var i=0; i<radioGroup.length; i++) {
radioGroup[i].checked = false;
}
}
If you don't want users to check the radios at all, disable them.
This below code simply give solutions to what you need.
this.scan=function(index)
{
if( this.boxGroup[ index ].checked )
for(var i=0, g=this.boxGroup, len=g.length; i<len; i++)
if( i != index )
g[i].checked = false;
}
for working demo see jsfiddle
I have this code that I need to edit so I can use it on multiple chkBox's and txtBox's.
Currently I can only hide one input field with one check box.
I know HTML and CSS but I am not familiar with JS.
I would like to be able to add a number at the end of each ID.
chkBox1, chkBox2, chkBox3... txtBox1, txtBox2, txtBox3...
Do I need to change getElementById to getElementsByTagName()?
JSFIDDLE for some reason it does not work here...?
This is my current code which hide the text field unless the checkbox is checked:
function showHide(){
var chkBox = document.getElementById("chkBox");
var txtBox = document.getElementById("txtBox");
if (chkBox.checked){
txtBox.style.visibility = "visible";
} else {
txtBox.style.visibility = "hidden";
}
}
The reason your code wasn't working is because it was running onLoad. Your DOM and the onclick were created before the load was complete. You could just move your code into your <head></head> tags and it will work as is. See here, all I did was select the "No wrap - in head", no code changes.
You could also continue to have your javascript run onLoad and remove your onclick and add an eventlistener in the javascript like this:
JSFiddle
var txtBox = document.getElementById("txtBox");
document.getElementById("chkBox").addEventListener("click", function() {
if (this.checked) {
txtBox.style.visibility = "visible";
} else {
txtBox.style.visibility = "hidden";
}
});
If you have multiple instances of this, I would change your DOM a bit sort of like this:
<form>
<div class="option">
<input type="text" name="txtBox1" class="hiddenInput" />
<br/>
<input type="checkbox" name="chkBox1" id="chkBox1" class="showHideCheck" />
<label for="chkBox1">Click me to show the text box</label>
</div>
<div class="option">
<input type="text" name="txtBox2" class="hiddenInput" />
<br/>
<input type="checkbox" id="chkBox2" name="chkBox2" class="showHideCheck" />
<label for="chkBox2">Click me to show the text box</label>
</div>
</form>
and do your JQuery like this (since you previously tagged jquery):
$(".hiddenInput").hide();
$(".showHideCheck").on("change", function() {
$this = $(this);
$input = $this.parent().find(".hiddenInput");
if($this.is(":checked")) {
$input.show();
} else {
$input.hide();
}
});
JSFiddle
Or with pure javascript and the similar DOM as above:
var checkBoxes = document.getElementsByClassName("showHideCheck");
for (var i = 0; i < checkBoxes.length; i++) {
checkBoxes[i].addEventListener('click', function () {
var txtBox = getAssociatedTextBox(this);
if (this.checked) {
txtBox.style.visibility = "visible";
} else {
txtBox.style.visibility = "hidden";
}
}, false);
}
function getAssociatedTextBox(ele) {
var childNodes = ele.parentNode.childNodes;
for (i = 0, j = childNodes.length; i < j; i++) {
if (childNodes[i].className == "hiddenInput") {
return childNodes[i];
}
}
}
JSFiddle
Try this,
Javascript
$(document).ready(function(){
$("input[type=checkbox]").change(function(){
var oTxt = $("#txtBox" + $(this).attr("id").replace("chkBox", ""));
if($(this).is("checked"))
oTxt.show()
else
oTxt.hide();
});
});
HTML
<input type="checkbox" id="chkBox1"/>
<input type="textbox" id="txtBox1"/>
<input type="checkbox" id="chkBox2"/>
<input type="textbox" id="txtBox2"/>
I have an HTML form with checkboxes like so:
<form id="filterOptions" method="post" action="">
<input type="checkbox" name="filterTaxi" id="filterTaxi" />
<input type="checkbox" name="filterBicycle" id="filterBicycle" />
<input type="checkbox" name="filterCarPark" id="filterCarPark" />
<input type="checkbox" name="filterBed" id="filterBed" />
</form>
Now I want to use javascript to apply a function whenever a checkbox is changed.
At the moment I can apply a function when the first checkbox is changed like so:
document.getElementById('filterTaxi').onchange = function(){
//do something here
};
So my question is, how do I avoid writing that for every checkbox and instead have a function fired when any of the checkboxes are changed?
You can either select all input or add a class and do:
var input = document.getElementsByTagName('input');
for(var i = 0; i < input.length; i++) {
input[i].onchange = function() {
console.log(this);
}
}
onchange function can be the same for all of them.
fiddle: http://jsfiddle.net/XgS9K/
for all elements.
document.getElementById('filterOptions').onchange = function(){
alert()
};
This will give you the onchange handler for checking and unchecking of checkboxes.
var allInputs = document.getElementsByTagName('input');
for (var i = 0; i < allInputs.length; i++) {
if (allInputs[i].type == 'checkbox') {
allInputs[i].onchange = function () {
if (this.checked) {
// your checked code here
console.log('checked');
} else {
// your unchecked code here
console.log('unchecked');
}
}
}
}
DEMO http://jsfiddle.net/L324t/
I have two checkbox fields. Using Javascript, I would like to make sure only one checkbox can be ticked. (e.g if one checkbox1 is ticked, if checkbox2 is ticked, checkbox1 will untick)
<input name="fries" type="checkbox" disabled="disabled" id="opt1"/>
<input type="checkbox" name="fries" id="opt2" disabled="disabled"/>
I would also like to have a radio button beneath, if this is clicked, I would like both checkboxes to be unticked.
<input type="radio" name="o1" id="hotdog" onchange="setFries();"/>
Would the best way to do this be by writing a function, or could I use onclick statements?
Well you should use radio buttons, but some people like the look of checkboxes, so this should take care of it. I've added a common class to your inputs:
function cbChange(obj) {
var cbs = document.getElementsByClassName("cb");
for (var i = 0; i < cbs.length; i++) {
cbs[i].checked = false;
}
obj.checked = true;
}
Demo: http://jsfiddle.net/5uUjj/
Also based on tymeJV's answer above, if you want to only deactivate the other checkbox when one is clicked you can do this:
function cbChange(obj) {
var instate=(obj.checked);
var cbs = document.getElementsByClassName("cb");
for (var i = 0; i < cbs.length; i++) {
cbs[i].checked = false;
}
if(instate)obj.checked = true;
}
tymeJV's function does not let you have both unticked - this does.
(yes, weird but true.. sometimes there's a semantic reason why you want two tickboxes not radio buttons)
Hope this helps:
function setFries(){
var hotdog= document.getElementById("hotdog");
var opt1= document.getElementById("opt1");
var opt2 = document.getElementById("opt2");
if(hotdog.checked){
opt1.checked = false;
opt2.checked = false;
}else if(opt1.checked){
opt2.checked = false;
}else if(opt2.checked){
opt1.checked = false;
}
}
<input type="checkbox" name="fries" id="opt1" disabled="disabled" onclick="setFries(this);/>
<input type="checkbox" name="fries" id="opt2" disabled="disabled" onclick="setFries(this);/>
<input type="radio" name="o1" id="hotdog" onclick="setFries(this);"/>
Note that I am using onclick event:
function setFries(obj){
var fries = document.getElementsByName('fries');
if(obj.id =='hotdog') //Or check for obj.type == 'radio'
{
for(var i=0; i<fries.length; i++)
fries[i].checked = true;
}
else{
for(var i=0; i<fries.length; i++){
if(fries[i].id != obj.id){
fries[i].checked = !obj.checked;
break;
}
}
}
}
The simplest way I found for this was to not use any sort of code at all. I triggered an actions in the check box properties.
1. mouse up to reset a form. I then unselected (for reset) all of my fields accept for my desired check boxes. I then did the same thing for my other check box to go the other way. You can basically turn the check boxes into toggles or have any sort of crazy pattern you want.