I am looking for a very simple process to record a click to an element then to update a database with that number.
For example a page is displayed then the variable is incremented when a click is made within that element. It only needs to record 1 click so a 0/1 variable is fine but when the zero changes to a 1 it needs to be recorded on the database.
Any simple way to do this? I am assuming it would be ajax but not too hot with that. I would need to also pass the ID of the row to update on the DB. Any help is appreciated :)
It really needs to happen in the background with the only interaction being the click on the element that holds the page so no page refresh. I have a good idea of what i want but the coding part in Javascript/Ajax eludes me. Basically i need to set up a listener for the click or an onclick to the element which will then fire up ajax to send a single variable (the id in the database) which will update the row in the db.
so for example
<div id="page" onclick="updateclick()">
Page content
</div>
<script>
function updateclick() {
var click = "1";
ajax part to send the variable $db_id to a seperate php file so the DB can
be updated
}
</script>
Something like this.
Related
I have an asp.net webpage that contains a gridview with SQL data bound to it using the DataSourceID property. I want to be able to launch JavaScript from various user events (like button clicks and row clicks in a second gridview) and use JavaScript to read the gv1 data and perform some simple actions. My problem is, some of my JavaScript calls see the data in the gridview, but many times all I see in the gridview is a header (no rows of data!).
For example, if I put a call to JavaScript inside Page_Load() using
ScriptManager.RegisterStartupScript(Me, Page.GetType, "Script", "jsPageLoadFirst();", True)
then I always see the gridview data on the initial page load, and also on some postbacks. On other postbacks however the gridview has been stripped and all I see is the gridview header (rows are undefined).
Similarly, if I setup a call to JavaScript in the html body as
<body id="mybody" onload="JavaScript:myJSsub();">
the JavaScript sub never sees the gridview data; only the header, but no rows. I THOUGHT that the client onload event only occurred after the page was fully loaded (including all data binding!) but apparently not! Note that I always see the gridview data showing on the webpage, even right before I click a button to invoke JavaScript, so it's a mystery to me as to why the gridview data sometimes gets stripped!
I've been pulling my hair out for days trying to figure this one out. Can anyone tell me what I'm doing wrong, and how I can make sure the gridview row data is always available to my JavaScript subs, no matter where (or how) I launch them?
Thanks!
-tom
10/7 update: Here's a little bit more info, plus a possible work around I've come up with today using a hidden field. First, I'm primarily accessing the gridview data in JavaScript using calls to document.getElementById("gv1"). So to start things off, since all the gridview data is available to the JavaScript sub I fire from the first server PageLoad event, I tried saving the gridview data in both a global variable "gvar1" and also in a hidden field on my page "hf1". Here is what my JavaScript looks like:
function jsPageLoadFirst() {
// Save gv1 to a global variable
gvar1 = document.getElementById("gv1");
// *** Also save gv1's html to a hidden field
document.getElementById("hf1").value = document.getElementById("gv1").innerHTML;
}
Now in the JavaScript sub I trigger from the onload() event of the body, I check the values of all three. I always find that 1) document.getElementById("gv1") shows only the gridview header (but no rows), 2) gvar1 is undefined and 3) hf1 looks fine - all row data is present. Similarly when firing javascript from server Postback pageloads, sometimes document.getElementById("gv1") shows all the gridview data, but sometimes it only shows the gridview header but no row data. Can someone explain to me why document.getElementById("gv1") does not always show the row data? I think if I understood this, I could see my way clear to get the rest of my code working. Thanks!!!
The variable data passed to a Bootstrap modal is hard coded in HTML data-text element field using "data-text" (according to the Bootstrap examples). If the modal's purpose is to allow a user to change that, then how do I send that back to the raw HTML data-text to update it for next time?
JS newbie here. I got Bootstrap 4 modals working and updating back to the server by Ajax (with a lot of Googling of StackOverFlow thanks!). I have about 100 text elements on the page which all load the same modal for editing of the clicked text field. The field initial value is hard coded into the page HTML in the data-text field (following the Bootstrap modal example). This allows passing of the current text value to pre-populate the modal field with the existing text value for editing.
Next, the user edits the note field in the modal and clicks submit. I am able to get the value and pass it back to the server, and update the DOM with the new edited value on the page, and everything works and looks great! So far so good.
Now here's the problem. Since I have not been able to figure out how to change the data-text field (which is hard coded in the page HTML), the screen (DOM) updates with the new value after submit correctly, but the data-text field of the element does not update. It is still the old value. It means the NEXT time I click to edit the text, the OLD value of the text field is pre-populated in the modal for editing.
Question: how do I update html data-text field by JS?
I have researched this problem at great length and without Stack Overflow I would never be able to get it working, so much appreciate you guys. Dozens of questions about passing variable TO Modals, but very few about passing the data back, and NONE about setting data-text on submit by JS.
text element definition example. This is a slightly simplified example. The text field contains some data from the server database, HTML is generated by PHP/MySQL. (1 out of 100 elements on page):
<td id="note_12345678" data-toggle="modal" data-target="#noteModal" data-note="<some text from db>" class="note"><same text from server db></td>
Here is the JS on submit code. Everything works except for the last line where I am trying to change the "data-note" field of the element:
function note_submit(element) {
var note = document.getElementById('message-text').value;
ajaxcall("/ajaxclick.php" , { note:note } , null); // Simplified, all is working.
noteElement = document.getElementById('note_12345678');
noteElement.innerText = note ; // Updates the DOM with submitted note.
noteElement.data-note = note ; // <== trying to change data-note here but obviously a syntax error.
}
Everything is working fine up to that last step. Clicking the text field opens modal, pre-loads the text for editing, allows the user to edit, click submit sends to server by Ajax for update, DOM note on screen is updated by JS. if I RELOAD the page, it loads the new edited text value from server db. Everything working great. Lots of joy.
Problem is NEXT time I click on the text element to edit it, the modal loads the OLD value from data-note hard coded into HTML. How to update it upon submit by JS? Thanks a million for any assistance. So close.
Updated: page is loading jquery-3.3.1.js, and bootstrap/4.0.0/js/bootstrap.min.js. Browser is FF V66.
I am new to working with Stripes. I have a dropdown ("show ## recordrs per page") and a paginated table on the JSP page and I want to display as many records per page in this table, as the value selected in the dropdown.
The action bean has a variable "recordsPerPage" and I am not able to figure out a way to set the value of this variable and reload the table, so as to change the number of records that are displayed per page. Please help.
---- Additional Info -----
The table that I use is a displaytag table, which accepts a PaginatedList. This table is within a stripes form.
-- EDIT:
What I did is, I added a <stripes:hidden/> with the name "recordsPerPage" and set the value to be the number of records I want to display. I also added a <stripes:submit> to the same form. The "name" attribute of this submit button is the method name of the action bean I have to call. When I click on this button, I am able to do what I want. But now, I am unable to do it through javascript. Please help.
Due to some reason, calling Dom.get('submitButton').submit() or Dom.get('myFormId').submit() does not fulfill the intended purpose. Taking a clue from being able to do what I wanted from the submit button click, I made this submit button hidden and the called click() on this button from javascript. Thus Dom.get('submitButton').click() produces the intended result. If someone can give me the explanation of why the submit method did not result in expected behavior, that'll be great.
I have an ajax query that returns an array . . I only show the first 20 items in the array right now but i have now added a link for "Show All" after I displayed those first results.
When the user clicks Show All i want to display all of the items in the array.(either inline or in a dialog (but that implementation shouldn't matter)
I want to avoid having to go back to the server to get the full list since I already retrieved the full list from the first ajax call . . where is the best way to locally store this array to be accessed later.
Save the array in a variable, or possibly attached as a data element to something on the DOM. Then, when your "Show All" event fires, read from that array and rebuild your display.
<div id="myArrayDisplay">
</div>
<script>
$(function () {
$.getJSON("backendCode.php", function (jsonData) { // assumes your array arrives as a response from a JSON-based Ajax request to some server code
$("#myArrayDisplay").data("arrayObj", jsonData);
});
});
</script>
Obviously I'm not showing how you would display the contents of the array in the above code, just how I would store it.
I think the easy way you can do is to put the full list data into a hidden input textfield
I don't know about the best way, but the simplest is using a global variable.
Define it here:
$(document).ready(function(){
$.myArray = [];
})
And use it like so:
function myFunction(){
alert($.myArray[0]);
}
More info about $(document).ready.
On the other hand, you could create two separate fields, one with the initial info and one with the rest, making the second one invisible. When the user clicks "Show more" you can show the hidden one.
More information about .show().
In my web page, I am using ajax + RoR to refresh the contents of the textbox using searchtool. All the value I am accessing, such like superset value for the current page. Means for example there is headquarter and it has many stations. When I am trying to access the value of headquarter at station then corresponding values changes at textbox.
Here, we are displaying the global value of head-quarter, due to less space I am showing telephone number and its quality on Tool-Tip. When page changes the value of station then whole contents changes but the tooltip remains same.
Sample of code:
<div class="divFloat" id="populate_phone1" onmouseout="UnTip()"
onmouseover='Tip("<%=GlobalPartnersHq.globally_phone_type(#station_hq.is_global_phone1, #station_hq.phone1_type_id) %>")' >
<%=GlobalPartnersHq.global_phone(#station_hq.is_global_phone1, #station_hq.phone1)%>
</div>
How can I refresh the JavaScript onmouseover value when ajax updates the value of textboxes?
I'm not following your code entirely, but it sounds like Ajax is updating the DOM and you want to trigger some additional code. What I recommend is that you emit a custom event and write separate handlers. If you are using jQuery check out trigger docs. You can do something like $.trigger('myEvent') then bind multiple handlers to it (e.g. $('selector').bind('myEvent', function() {});) to update various parts of the page.