I'm a bit lost as to starting the code for my scenario.
I allow the user to create divs dynamically by clicking on an add new div button and remove div button. Therefore, the user could be focused inside any div on the page and I need to make the keypress event send to the correct div.
I have some buttons to insert Mathml on the left of the screen. I want to be able to click on the button and for the Mathml code to appear in the div the user is currently focused in.
From what I've read, I believe I have to attach an event listener to each div as it is created and remove it when the user removes the div (I maintain an index of the divs).
How do I send the keypress event from the button to the div the user is in without losing focus on the div and making sure the Mathml goes into the correct div?
I know in vb or C# .net it is a 2 second job but javascript seems like a real nightmare for this type of functionality.
Any help/pointers/tips etc.. would be most welcome.
Alright, so I created this fiddle for you the get a look at how a possible solution could look.
https://jsfiddle.net/1u0uw0df/
HTML
<div id="container">
</div>
<button type="button" id="AddBtn">
Add
</button>
<button type="button" id="RemoveBtn">
Remove
</button>
JQuery
var No = 0;
var focusedElement;
$(document).ready(function() {
$('#container').on('click','div',function() {
focusedElement = this;
});
$('#AddBtn').on('click',function() {
$('#container').append('<div>Test'+No+'</div>');
No++
});
$('#RemoveBtn').on('click', function() {
focusedElement.remove();
});
});
Related
At first I apologize for not having the code of my desire & I've no idea how I'll ask the exact question by focusing any specific keywords.
However, I want to show my product information in an area(div) whenever I click a button in another area(div). & The work should be done without refreshing pages.
Again I apologize for that I've not the code. But I can provide an
image and hope you'll understand my desire
Example: Whenever I click on angry burger, the price and quantity should be shown in the right(California Fried Chicken) area. And multiple selecting product should also work one by one. After that I should be able to submit product information bu pressing submit button where a PHP operation should be done.
I want to do the whole task by jQuery & PHP
Thanks
You can achieve this by setting up click listeners in your javascript/jquery code and assign them to the ids of your pictures or fields. For example you can assign an id to an tag like below;
<p id="div">Hello world</p>
And then set up a click event in your jquery code to execute a function whenever that tag is clicked
$( "#div" ).bind( "click", function() {
var tag = $(this).html(); //get the value of the tag
alert(tag);//this will display Hello world
});
You can do this for any tag and retrieve its value or contents or anything and carry out an activity like changing the display of another element as below
$("#change").append(tag) //this will change the display of the tag with id change
Please ask if you have any questions
I managed to get some js to work to my surprise, now I want to make it a little more complex which is way out of my expertise.
I have a button when clicked will reload a iframe that is on my page. I have multiple iframes all but 1 are hidden. Then I use jquery to display a different iframe and hidden the previous depending on the nav button clicked. e.g. "1-btn" (nav btn) tied to "1-win" (iframe), "2-btn" (nav btn) tied to "2-win" (iframe) etc. So when you click "2-btn", "1-win" iframe hides and "2-win" iframe is displayed. Now I want to change my code so this ties into my reload javasrcipt. Currently, my js only reloads 1 iframe via the iframe id. I want to change this id every time to a different iframe. This will allow my Reload btn to only reload the current iframe displayed and not any of the other that are hidden.
Here is my Reload js
function Reload () {
var f = document.getElementById('1-win');
f.src = f.src;
}
As you can see this reload script only works for iframe "1-win". When i click "2-btn" nav to display "2-win" iframe (and hides "1-win") the reload button still only works for "1-win". Therefore, I want it to also change. For e.g. when I click "2-btn" (nav) to display "2-win" iframe I want to change the Reload id to "2-win" also.
I was thinking of using onClick within my nav buttons which passed through the id of the iframe which that nav btn is tied to. However, I have no idea how to do this.
For full code see:
https://github.com/tmacka88/Service-Manager
Sorry if this doesn't make any sense, I cant think of an easier way to explain it.
Thanks
EDIT
This below answer may or may not still apply now that the problem has been better defined.
One approach you could try is having a hidden field on the page which contains a semi-colon separated list of the Id's of the iframes. E.g.
<input type="hidden" name="iframeids" value="1;2;3;4;5">
On the click event of your button, call some JavaScript which gets the value of the hidden field, takes the first token before the semicolon, and then reorganise the string. An example:
// Next value is 1
// Use 1 in your JS
// Put 1 to the end, next is now 2
<input type="hidden" name="iframeids" value="2;3;4;5;1">
You would contain the logic of re-arranging etc. in the JS function.
Now that the problem is better defined, we can work out a proper solution.
Here are some design considerations:
Ideally you do not want to manually add a new button for every iframe that you put on the page. Main reason being code maintenance. If you were to add a new iframe, or remove one, your code would not function correctly. Also the amount of mark-up required will be unnecessarily high
jQuery will make your life easier, although it's not required, it will cut out a lot of code. I can't stress enough the importance of knowing JavaScript basics first, but this is your responsibility to learn
For point 1, what we would like is a generic solution so that if you add more iframes, the buttons are added automatically. JavaScript is the way to do this (I'm assuming this is just HTML, not ASP.net or php or some other server side
Point 2 - jQuery will help with point 1.
Now we have this understanding, let's look at an outline of what we need to do:
In JavaScript, loop through the iframe tags on the page
For each iframe, generate a button using jquery, using the values like src and id in the iframe as attributes on the button
Add some click-event code to the button do define what it needs to do when clicked
Again using jQuery, add the newly created buttons to the DOM
This did the trick:
function Reload()
{
$("iframe").each(function()
{
if($(this).is(':visible'))
$(this).attr('src', $(this).attr('src'));
});
}
I am working on a new site TheDigitalScale and I am using jQuery to create a feature list that expands a div when clicked and closes the div with another click.
<script type="text/javascript">
$(document).ready(function()
{
//hide the all of the element with class msg_body
$(".msg_body").hide();
//toggle the componenet with class msg_body
$(".msg_head").click(function()
{
$(this).toggleClass("msg_head2").next(".msg_body").slideToggle(100);
});
});
</script>
<div class="msg_list">
<p class="msg_head">They Forgot The Buttons</p>
<div class="msg_body"><p>
Just kidding. The MXT has nifty touchscreen controls so you never have to worry about buttons getting dirty or broken.
</p></div>
</div>
It works fine and all but, I also have a product review link that uses the JavaScript do_PostBack function to expand a review panel.
Review and Rate this item
When the review link is clicked, it causes all of the jQuery divs to expand.
When I set enablepartialrendering to false and it "fixes" the problem but when the review link is clicked it takes the user to the top of the page and expands the review panel rather than just expanding the review panel and keeping the user in the right spot.
I hope I explained this well enough; I am very new to jQuery, JavaScript and AJAX.
Regards,
Shala
EDIT:
I suppose I didn't really ask a question so...
What can I change to make the review link expand the review panel and keep the user in the area without also expanding every one of the jQuery divs?
Here is a link to a product page: MBSC-55
It looks like you have nested updatepanels. Try setting the UpdateMode property of the parent panel to Conditional to prevent the child updatepanel from triggering the parent updatepanel.
Okay, I think I see what's happening. When your page loads you execute this code:
$(document).ready(function(){
//hide the all of the element with class msg_body
$(".msg_body").hide();
//toggle the componenet with class msg_body
$(".msg_head").click(function() {
$(this).toggleClass("msg_head2").next(".msg_body").slideToggle(100);
});
});
Now, when .net does the postback it is re-creating those .msg_body and .msg_head elements. The best solution would be to get .net to not replace those (unless you need them to).
If you need those to re-draw, you can do 2 things. First, set .msg_body to be hidden in your css, that way they are hidden by default. Then to handle the click issue, replace your click code with this:
$(".msg_head").live("click", function() {
$(this).toggleClass("msg_head2").next(".msg_body").slideToggle(100);
});
This will cause the click handler to still work for newly added .msg_head items.
I'm using Javascript/Jquery to have a button toggle which div is displayed in the user's window. I have my initial background div #container which gets toggled with a different div if the user clicks on a certain location. A back button is toggled on once the new div is displayed. I want the back button to switch the div back to the initial #container if it is pressed. The back button's display should be toggled off again if this happens.
Since I have different divs that the back button shows up in, I need to determine which background div the user is viewing in order to toggle that specific div off and the #container back on. The container will not display again if I do not toggle the current div off.
Here's my code for an example of one instance:
JS:
$(document).ready(function()
{
$("#backButton").click(function(e)
{
if(THE CURRENT DIV IS REGION 1)
{
$("#container").toggle(); //toggle the container on
$("#region1").toggle(); //toggle region 1 off
$("#backButton").toggle(); //toggle the back button off
}
});
});
Obviously, I do not know what code to use to determine which div the user is looking at. I tried if(document.getElementById('region1');) but it didn't work; I didn't think it would, but that's the direction I'm going as to how to determine the current div.
Any help would be greatly appreciated!
if($('#region1').is(":visible")){ etc... }
If you are talking about a back button located in the DOM inside the div region1, you could use:
if($(this).parents("#region1").length > 0)
Which says "if the number of parents of this button containing ID region 1 are non-zero". For more information see parents. In general the traversing functions in jQuery will be helpful to you.
This might be what you're looking for:
http://api.jquery.com/parent-selector/
If all you're doing is switching two DIVs back and forth, you don't even have to check which DIV is currently displayed, because the .toggle() function should do that for you out-of-the-box.
Consider you have two DIVs, make sure one is hidden and one is shown, like so:
<div id="region1">foo</div>
<div id="region2" style="display:none;">bar</div>
Now, when you click on the button, you just have to call .toggle() on both of them.
$('#backButton').click(function(){
$('#region1, #region2').toggle();
});
You can even get by with using only one button to do that, and just switch the text inside the button if you'd like.
// inside the click handler
$(this).val( $(this).val() == 'Next' ? 'Back' : 'Next' );
Full code example here: jsFiddle example
I have a series of input buttons. Let's say two for simplicity. Each button has its own associated content in a separate div. All the content is in invisible divs ( display: none ) to begin.
If you click a button, its associated content is displayed. If you click it again, the content disappears. This is done with toggle(). The problem is that if you click one button and then click the other button, both divs are now visible.
So my main question is the best way to solve this problem. The solution I tried doesn't work, so if you have an entirely new approach, please let me know, or if you can refine my approach to make it work, that'd be great too. Okay, on to how I tried to solve this.
To solve this, I used siblings() to make sure all content divs are invisible before a new content divs appears.
So now, if I click 1 it appears. If I click 2, 1 disappears and 2 appears..... but now, if I click 1 again nothing happens (because it's my second click on number 1, and toggle() keeps track of each button separately)
How can I implement this type of content toggling without running into these issues?
(On the real page there are an unknown number of button / div combos and the user can click on them in any order)
Here's an example of the problem code (click 1, 2, then 1)
Thanks!
Looks like the answer may be something using .trigger('click') and :visible... just having trouble making it work.....
try this: http://jsfiddle.net/TennG/
To achieve your desired results, keep the state separate for each div (by using classes to represent hidden and visible, and don't use the toggle function.
$("input").click(
function(event) {
var theDiv = $("#d" + $(event.target).attr('id'));
var wasHidden = theDiv.hasClass("hiddenDiv");
$(".visibleDiv").removeClass("visibleDiv").addClass("hiddenDiv");
if(wasHidden){
theDiv.removeClass("hiddenDiv").addClass("visibleDiv");
}
}
)
div div.hiddenDiv {
display: none;
}
div div.visibleDiv {
display: inline:
}
<input id="i1" type="button" value="one" />
<input id="i2" type="button" value="two" />
<div>
<div id="di1" class="hiddenDiv ">This is the first one.</div>
<div id="di2" class="hiddenDiv ">And here we have number two.</div>
</div>
The technique can be summed up as follows
Start off with all divs hidden
When a click occurs, look at the relevant div, to see if it was hidden
Remove the visible class from all divs that have it, and replace with the hidden class
If the div was previously hidden, remoe the hidden class and replace with the visible class.