I am using the following code:
ieLessThan8OptionDisable = function() {
if ($.browser.msie && parseFloat($.browser.version) < 8) {
$("select").find("[disabled]").addClass("disabledforie").removeAttr("disabled");
$("select").change(function(){
var selected = $(this).val();
var disabled = $(this).find("[value="+selected+"]").hasClass("disabledforie");
if (disabled) {
alert("This option is disabled.\nSelect will be set to the first option.");
$(this).find("option:first").attr("selected","selected");
}
});
}
}
Basically this code is for disabled option in a select drop down box. It works perfectly except there is a usability issue.
Anytime I click on the option which should be disabled in IE, an alert pops up, and after that the select box resets to the first position. All is fine. Now when I click on the select box to open the drop down, it just closes. Basically I have to click on it 2 times at which point it opens.
I have tried this in IE6 and IE7. Both have this issue.
Any pointers would be great!
Thanks
This sounds like a focus issue. The select box has focus when you select a new option, then you pop up an alert which steals focus away from the select element. IE should be closing the select box automatically when the alert gets called but alas they probably didn't test this edge case. So the two clicks do the following:
Return focus to the select element
Select an item in the list
Add a call to blur before you invoke the alert:
if (disabled) {
this.blur();// add in
alert("This option is disabled.\nSelect will be set to the first option.");
$(this).find("option:first").attr("selected","selected");
}
PS - I haven't actually tested this, I don't have IE available right now
Related
I have a webpage with two drop down menus. The first one (id = ddlIndustry) has a 'Go' button that refreshes the page after selecting an option from the drop down. Once this is done, a selection can be made in the second drop down (id = region). This has an onchange property that is triggered and refreshes the page when a selection is made.
I am trying to write a set of commands in Javascript that selects an option from the first dropdown, clicks the 'Go' button, and once the page is refreshed, selects an option from the second drop down and programatically triggers the onchange event.
The code I have so far is:
document.all.ddlIndustry.selectedIndex = 21;
document.getElementById("cmdChart").click();
window.onload = function(){
document.all.region.selectedIndex = 2;
document.all.region.onchange();
};
This lets me select a ddlIindustry index and press 'Go', but does not select a region and trigger an onchange event. However, when I select an industry and press go manually, the second part of the code:
document.all.region.selectedIndex = 2;
document.all.region.onchange();
does allow me to select a region and trigger the onchange event.
How can I do both things together?
Edit: I have tried this in both Chrome (Version 37.0.2062.120 m) and IE (Version 11.0.9600.17280)
I think, If you write something like given below will work.
region.selectedIndex = 2;
region.onchange();
you can try this as well:
var body_Onload = function(){
document.all.region.selectedIndex = 2;
document.all.region.onchange();
};
In HTML add this function to body tag as
<body onLoad="body_Onload">
...
...
</body>
On page i have two with same options. If a select option it should be disabled in each select. Here is my demo: http://jsfiddle.net/bfmKw/8/
$("select").off('change').on('change', function () {
disableOptions();
});
function disableOptions() {
var $dropdowns = $('select');
$dropdowns.find('option').attr('disabled', false);
$.each($dropdowns, function (i, dropdown) {
var mark = $(dropdown).find('option:selected').attr('mark');
if (mark) {
$dropdowns.find('option[mark="' + mark + '"]:not(:selected)').attr('disabled', true);
}
});
}
But in firefox exist bug or feature. Steps for reproduction:
1) Open select box and choose option. Change event will rise and options will be disabled.
2) Open same select box, hover mouse on another option and click twice on diferent from select box place. Change event will be rised too.
If instead disabled set any another attribute all works fine. May be exist another way how can i disable options?
This wrong behavior appears after disabling selected option and only in firefox. Right disabling:
$dropdowns.find('option[mark="' + mark + '"]:not(:selected)').attr('disabled', true);
I have a table and I use select menu in each row for different actions for that specific row.
For example:
$(document).on('change', '.lead-action', function() {
// Do stuff
}
this method gets the value of the selected option. Based on the selected value, I display different popups. When the user leaves the page, the select menu retains the previously selected option.
Sometimes users click on the same option in the select menu. When they do, the above code doesn't work.
Is there a way to invoke the code block above if the same option in the select menu is selected?
I'm gathering that you just want the dropdown to fire anytime a selection is made. If so, check out the answer to Fire event each time a DropDownList item is selected with jQuery.
See my updated answer below:
You can use this small extension:
$.fn.selected = function(fn) {
return this.each(function() {
var clicknum = 0;
$(this).click(function() {
clicknum++;
if (clicknum == 2) {
clicknum = 0;
fn(this);
}
});
});
}
Then call like this:
$(".lead-action").selected(function(e) {
alert('You selected ' + $(e).val());
});
Update:
I'm actually rather unhappy with the original script. It will break in a lot of situations, and any solution that relies on checking the click count twice will be very fickle.
Some scenarios to consider:
If you click on, then off, then back on, it will count both clicks and fire.
In firefox, you can open the menu with a single mouse click and drag to the chosen option without ever lifting up your mouse.
If you use any combination of keyboard strokes you are likely to get the click counter out of sync or miss the change event altogether.
You can open the dropdown with Alt+↕ (or the Spacebar in Chrome and Opera).
When the dropdown has focus, any of the arrow keys will change the selection
When the dropdown menu is open, clicking Tab or Enter will make a selection
Here's a more comprehensive extension I just came up with:
The most robust way to see if an option was selected is to use the change event, which you can handle with jQuery's .change() handler.
The only remaining thing to do is determine if the original element was selected again.
This has been asked a lot (one, two, three) without a great answer in any situation.
The simplest thing to do would be to check to see if there was a click or keyup event on the option:selected element BUT Chrome, IE, and Safari don't seem to support events on option elements, even though they are referenced in the w3c recommendation
Inside the Select element is a black box. If you listen to events on it, you can't even tell on which element the event occurred or whether the list was open or not.
The next best thing is to handle the blur event. This will indicate that the user has focused on the dropdown (perhaps seen the list, perhaps not) and made a decision that they would like to stick with the original value. To continue handling changes right away we'll still subscribe to the change event. And to ensure we don't double count, we'll set a flag if the change event was raised so we don't fire back twice:
Updated example in jsFiddle
(function ($) {
$.fn.selected = function (fn) {
return this.each(function () {
var changed = false;
$(this).focus(function () {
changed = false;
}).change(function () {
changed = true;
fn(this);
}).blur(function (e) {
if (!changed) {
fn(this);
}
});
});
};
})(jQuery);
Instead of relying on change() for this use mouseup() -
$(document).on('mouseup', '.lead-action', function() {
// Do stuff
}
That way, if they re-select, you'll get an event you can handle.
http://jsfiddle.net/jayblanchard/Hgd5z/
I have following jquery code, where on click of a check box I will show a popup value.
Except in IE,in all other browser it works as expected. That is, on change the check box will be checked and the popup will be opened.
However in IE8 its not getting checked, however popup is displayed properly.
Code :
$('#TAndC').change(function(){
if( $('input[name="TAndC"]').is(':checked'))
{
$('#TandCBox').show();
var termsandcondition = GetEnum().TermsandConditionsPageId;
var actionURL = '#Url.Action("ShowTAndC", "Account", new { isFromCheckBox = true })';
$('.popUpForm').load(actionURL);
var msgBox = $('#terms').attr('href');
MaskMsgPopUp(msgBox);
return false;
}
});
If your element is a checkbox and not a dropdown then use click anyway.
If your selector is referring to a dropdown use click if you need to support IE8 and older.
See why that is below.
According to the MSDN for change/onchange, the event is not triggered until the change is committed.
In addition the event is also not triggered when the value is changed programmatically.
To quote:
This event is fired when the contents are committed and not while the
value is changing. For example, on a text box, this event is not fired
while the user is typing, but rather when the user commits the change
by leaving the text box that has focus. In addition, this event is
executed before the code specified by onblur when the control is also
losing the focus. The onchange event does not fire when the selected
option of the select object is changed programmatically. Changed text
selection is committed.
To invoke this event, do one of the following:
Choose a different option in a select object using mouse or keyboard navigation.
Alter text in the text area and then navigate out of the object.
If you must support IE8 and older, you are probably better of to use the click event instead which get's triggered when you release the mouse and your new choice is selected.
instead of .change use below code and try
$(document).ready(function(){
$(document).on('click','#TAndC',click_function){
if( $('input[name="TAndC"]').is(':checked'))
{
$('#TandCBox').show();
var termsandcondition = GetEnum().TermsandConditionsPageId;
var actionURL = '#Url.Action("ShowTAndC", "Account", new { isFromCheckBox = true })';
$('.popUpForm').load(actionURL);
var msgBox = $('#terms').attr('href');
MaskMsgPopUp(msgBox);
return false;
}
});
});
I am using jQuery 1.3.2.
There is an input field in a form.
Clicking on the input field opens a div as a dropdown. The div contains a list of items. As the list size is large there is a vertical scrollbar in the div.
To close the dropdown when clicked outside, there is a blur event on the input field.
Now the problem is:
In chrome(2.0.172) when we click on the scrollbar, the input field will loose focus.
And now if you click outside, then the dropdown won't close(as the input has already lost focus when you clicked on the srollbar)
In Firefox(3.5), IE(8), opera(9.64), safari() when we click on the scrollbar the input field will not loose focus. Hence when you click outside (after clicking on the srollbar) the dropdown will close. This is the expected behaviour.
So In chrome once the scrollbar is clicked, and then if I click outside the dropdown won't close.
How can i fix this issue with chrome.
Well, I had the same problem in my dropdown control. I've asked Chrome developers concerning this issue, they said it's a bug that is not going to be fixed in the nearest future because of "it has not been reported by many people and the fix is not trivial". So, let's face the truth: this bug will stay for another year at least.
Though, for this particular case (dropdown) there is a workaround. The trick is: when one click on a scrollbar the "mouse down" event comes to the owner element of that scrollbar. We can use this fact to set a flag and check it in "onblur" handler. Here the explanation:
<input id="search_ctrl">
<div id="dropdown_wrap" style="overflow:auto;max-height:30px">
<div id="dropdown_rows">
<span>row 1</span>
<span>row 2</span>
<span>row 2</span>
</div>
</div>
"dropdown_wrap" div will get a vertical scrollbar since its content doesn't fit fixed height. Once we get the click we are pretty sure that scrollbar was clicked and focus is going to be taken off. Now some code how to handle this:
search_ctrl.onfocus = function() {
search_has_focus = true
}
search_ctrl.onblur = function() {
search_has_focus = false
if (!keep_focus) {
// hide dropdown
} else {
keep_focus = false;
search_ctrl.focus();
}
}
dropdow_wrap.onclick = function() {
if (isChrome()) {
keep_focus = search_has_focus;
}
}
That's it. We don't need any hacks for FF so there is a check for browser. In Chrome we detect click on scrollbar, allow bluring focus without closing the list and then immediately restore focus back to input control. Of course, if we have some logic for "search_ctrl.onfocus" it should be modified as well. Note that we need to check if search_ctrl had focus to prevent troubles with double clicks.
You may guess that better idea could be canceling onblur event but this won't work in Chrome. Not sure if this is bug or feature.
P.S. "dropdown_wrap" should not have any paddings or borders, otherwise user could click in this areas and we'll treat this as a scrollbar click.
I couldn't get these answers to work, maybe because they are from 2009. I just dealt with this, I think ihsoft is on the right track but a bit heavy handed.
With two functions
onMouseDown() {
lastClickWasDropdown=true;
}
onBlur() {
if (lastClickWasDropdown) {
lastClickWasDropdown = false;
box.focus();
} else {
box.close();
}
}
The trick is in how you bind the elements. The onMouseDown event should be on the "container" div which contains everything that will be clicked (ie, the text box, the dropdown arrow, and the dropdown box and its scroll bar). The Blur event (or in jQuery the focusout event) should be bound directly to the textbox.
Tested and works!
I was facing the same situation/problem and I tested the solution from "ihsoft" but it has some issues. So I worked on an alternative for that and made just one similar to "ihsoft" but one that works. here is my solution:
var hide_dropdownlist=true;
search_ctrl.onblur = function() {
search_has_focus = false
if (hide_dropdownlist) {
// hide dropdown
} else {
hide_dropdownlist = true;
search_ctrl.focus();
}
}
dropdow_wrap.onmouseover = function() {
hide_dropdownlist=false;
}
dropdow_wrap.onmouseoout = function() {
hide_dropdownlist=true;
}
I hope this will help someone.
Earlier also I faced such situation and this is what I have been doing.
$('html').click(function() {
hasFocus = 0;
hideResults();
});
and on the input field i will do this
$('input').click()
{
event.stopPropagation();
}
So this will close the drop down if clicked anywhere outside the div (even the scrollbar).
But I thought if someone could provide a more logical solution.
Could you maybe set the blur event to fire on the drop down div as well? This way, when either the input or the drop down loses focus, it will dissapear...
I'm curious...
You're using the last version of every browser, why don't you try it in chrome 4.0.202?
instead of detecting the blur, detect the document.body or window click and grab the mouse point. determine if this mouse point is outside of the menu box. presto, you've detected when they clicked outside the box!
I solved this by doing the following:
#my_container is the container which has the "overflow: auto" CSS rule
$('#my_container')
.mouseenter(function(){
// alert('ctr in!');
mouse_in_container = true;
})
.mouseleave(function(){
// alert('ctr out!');
mouse_in_container = false;
});
And then:
$('input').blur(function(){
if(mouse_in_container)
return;
... Normal code for blur event ...
});
When I select an element in the drop down, I rewrite the code as:
(>> ADDED THIS) mouse_in_container=false;
$('input').attr('active', false); // to blur input
$('#my_container').hide();