Dynamic Select Element: Problem With Onchange Event
Jul 20, 2005
For some reason my change() function is only called when the page loads. I'd
much rather it gets called when the select changes.
Here's the code:
window.onload = init;
function init() {
var new_select = new Selector('tdata','myselect','myid');
var new_select_list = new DataSource("some_list");
new_select_list.addItem(1,"One");
new_select_list.addItem(2,"Two");
new_select_list.addItem(3,"Three");
new_select_list.addItem(4,"Four");
new_select_list.addItem(5,"Five");
new_select.setDataSource(new_select_list);
new_select.formInput("form","input");
}
I am trying to add an onchange event to a select tag.
This is my code, but it does not appear to be working.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1250">
I want to make one application using javacript or may be it is in ajax. Let me explain my problem: I have one select box name person which have value 0,1,2,3,4,5 . Now i want that when user will select value 1 from select box then person 1 first name , last name input type box will appear only one time in a row. and if we will select 2 from select box then two row will appear naming person1 and person2 like this: if we will not select any value by default is 0.then it will not show any row regarding person.
I am trying to make one application. When we slect value from select box . It will show same type of row according to which value we select from select box.
Let me explain my problem: select box have value 0,1,2,3 . When we select 1 then it will show one row below the select box naming person1 name (input box for name of person1). if we will select value 2 from select box then it will show two row according to select value Like this
person1 Enter Name of person1 person2 Enter Name of person2
By default it have value 0 then it will not show any row below the select box.
i want to do this. But i do not know how i can do this . I think for this i have to onchange event in select box .But in correct way i do not know how it is possible.
I am trying to extract the value from a selected item in a Select/Option, parse it server side using asp and then populate a text box on the same page with the value that was parsed. simple example below:
Two problems I have here:
1. The code: this.frmEditUser.Submit; does not appear to submit the form. 2. If I submit the form using the Submit button, it works except I get:
Currently I am using an onchange event on a select menu and it is working fine. But if the user uses any arrow keys the event will not trigger. Is there any way to do that?
I have a select dropdown which has two events an onchange and onkeypress. My problem now is when I use the keyboard arrows to select an item from the list in a select drop down the onchange is selected(invoked) before I even reach the second item in the list when using opera and IE but working fine with Firefox and chrome.The onblur event does not work either because the focus must be set to following tag
In a <select> drop-down, the onchange event isn't called when scrolling through the dropdown using the mouse-wheel and when crossing over a new <optgroup>.
Using the example below, notice how the onchange event isn't called when mouse wheel scrolling between A3 and B1, but it works properly when scrolling between A1 and A2.
E.g. ------------------------------------------ <html> <body onload="document.forms['myForm'].elements['mySelect'].focus()">
I have a table that contains a select element like so
<tr><td>key value in hidden input</td><td><select>options</select></ td></tr> I need to set $("selectclass").change(function() { //Find the value of hidden input in 1st cell of row of the select list that was changed. });
So when a user changes the option of the select i need to get the new value the option has been changed to plus the value from the hidden input and submit them via ajax to a method on the server. How can i get the hidden inputs value?
I have a select element that has up to 200 items in a drop down. Each <option> element has a value 1 to 200, ie., <option value="1">text</option>, etc.
Given a list of values, such as 4, 43, 123, 199, how can I use that list to call a function and write "Selected" for those option elements in the drop down menu?
Does someone can help me with the following problem? I have a SELECT form tag, with some OPTIONS elements. I am using the following code to detect a click in the SELECT.
.... document.onclick = fnc_document_click ....
function fnc_document_click(){ if(window.event.srcElement.id == "my_lst"){ ...... } }
How can I avoid the "if" if user click in a area of SELECT out of the options elements? (The SELECT object is higher than the the goups of OPTIONS its contains)
In other words, how can detect if the click Iinside the SELECT element) happens in a OPTION element or not?
$("#amount").keydown(function(event) { // Allow only backspace and delete if ( event.keyCode == 46 || event.keyCode == 8 ) { // let it happen, don't do anything } else { // Ensure that it is a number and stop the keypress if ((event.keyCode < 48 || event.keyCode > 57) && (event.keyCode < 96 || event.keyCode > 105 )) { event.preventDefault(); }}});
I have a function that dynamically creates a new div, part of the function looks like: root = document.getElementById('rootbox2'); var oDiv=root.appendChild(document.createElement("div")); with(oDiv){ id=ji; className="workshopRow"; setAttribute("attending",""); setAttribute("attending_count","0"); } var oText = oDiv.appendChild (document.createTextNode("")); var oDiv1=oDiv.appendChild(document.createElement("div")); with(oDiv1){ className="workshopName"; } var oText = oDiv1.appendChild (document.createTextNode("")); var oSelect=oDiv1.appendChild(document.createElement("select")); with(oSelect){ name="select_"+ji; id="select_"+ji; className="workshop"; onchange="calc_subtotal("+ji+")"; } var oText = oSelect.appendChild (document.createTextNode("")); var oOption=oSelect.appendChild(document.createElement("option")); with(oOption){ value="12"; setAttribute("price",10); } What I am looking to do is add an onchange event to the select element, not sure if i have programmed it correctly but it does not seem to work.
I'm currently facing a weird issue with the onchange event. I have a web application where each blur event makes a call the webserver to store the value of the textfield. I only want to trigger that ajax call when something has changed, so i track the onchange event on each textfield to set a flag if something has changed.
The onchange event always fires to first time when i click outside of a textfield even if i didn't change anything in the field.
I narrowed it down to the following: A prefilled textfield always fires the onchange-event the first time you leave the textfield. An initially empty textfield does not fire the onchange event.
OnChange, I want to invoke a function that auto populates the rest of the SELECT fields in the form. The select boxes will vary in quantity as the page is dynamic, but the values are always the same (like the code above).
On page load it will evaluate this drop-down and repopulate it determined on their values. If there is an S in any of the values the drop-down will generate an option for 'S' like so.. <option value="s">S Option Text</option> And for the first code example in this post - the Javascript would be able to repopulate the drop-down with the following:
I've got some javascript that adds in form elements after a page has loaded. The checkboxes need an onchange event added to them which will call a function. However, if I enter the function call against the onchange event it doesn't work, if i enter the full function against the onchange then it does. Hard to explain but here's the working and non-working Code:
Is there anyway to trigger an onChange event without actually clicking etc.
I want to trigger it from a method. It sounds silly but I'm taking some code over from another developer and if I could do this it would save me days of re-writing!!!
getting dynamic rows inputs to multiply 'onchange' of the value in the input in each row. It works in the first row inserted no matter what rowindex that row is moved to. All following rows only accept the initial input value and never change the 'cost' innerHTML of the colRow[i]. I figure I need a parentNode.parentNode syntax to make this function work in all rows.
Every thing is Client-side javascript and all rows are inserted to 'cartbody.insertRow[0]'. 'qtymultiply()' Function As is:
Code:
function qtymultiply(){ var cartitems=document.getElementsByClassName('itemrow'); var colRows=cartitems;
I have created some Javascript to make a form application dynamic. My problem is that the code works in every browser except for internet explorer. I get no errors from Firebug and I have made sure that internet explorer has javascript enabled. I am completely in the dark as to why this would be happening. It works perfectly in Firefox, Chrome, and Safari. Here is my entire code for the form, it is for a housing application for a college,
Code: function runAll2 (processPart, areaType, spaceType, mealType) { pp = document.getElementById('fld2416'); at = document.getElementById('fld2417'); st = document.getElementById('fld2418'); mt = document.getElementById('fld2481');
[code]....
This for is supposed to go live on Tuesday and I didnt realize that it wasnt working in IE until today. I am pretty good at HTML and CSS and know a bit about cross browser testing, I just didnt even think about it because this form is entirely ASP and Java, my bad.
How can I change a select list when a user enters a value into a text box? Like with the below form I would like to have the select box change when the user enters a value in the "id" text box that matches a value in the select box. Say the user types "1122" in the text box I would like the select list to change to to show "John". Is this possible ....
In JavaScripts checks for an onChange event against the value of the textbox at the time of the last onChange event. Since an onChange Event never fired after you changed the text first time , suppose we put the same value in the text box then no event is fired.
If we put some other value then it became fired... It wouldn't fire if we put the same value...
I don't want to use onBlur etc... Isthere any solution with onChange Event...?
