onchange

onclick event not triggered when onchange triggered right before

由 半城伤御伤魂 提交于 2019-12-01 09:16:22
i have a funny problem here. I have a textarea with an onchange event linked to it. Then i have a button linked to an onclick event. The text being put to the textarea is processed when the onchange event gets triggered on the textarea. This normally happens when i click something outside of the textarea. What i did was the following: I typed in a text into the textarea. Right after typing i click on the button to trigger the onclick event on the button Nothing happens, but the onchange event on the textarea got triggered when i clicked on the button, but the onclick event on the button itself

html onchange/onblur compatibility

由 冷暖自知 提交于 2019-12-01 08:39:08
I am currently writing a web site which must be compatible with all browsers including IE back to version 6. I was wondering about compatibility issues with these two events in particular: I am using them with a <input> tag with type='text' . OnBlur OnChange Searching has found mixed responses and an incomplete list. Specifically, the question is: Are there any known issues with the above two events (could be expanded to other HTML events)? If so, what methods can be used to work around these issues? Any help much appreciated :) Dan Herbert All browsers should support these events pretty

JCombobox - Only execute actionlistener when value changes

由 风流意气都作罢 提交于 2019-12-01 07:40:54
问题 I have a JComboBox , and I have a listener attached to it. Right now every time the user "selects" something from the drop-down the event fires, even if they just reselected the value that was selected prior. Is there any way to only fire the event if the selected value of the combo box is DIFFERENT than it was before it was selected? I imagine I could store the value of the combo box in a different field, and compare it on event firing each time, this just seems kind of overkill. I have 20

Is there a way to call a function when a SwiftUI Picker selection changes?

由 血红的双手。 提交于 2019-12-01 07:36:29
问题 I would like to call a function when selectedOption's value changes. Is there a way to do this in SwiftUI similar to when editing a TextField? Specifically, I would like to save the selected option when the user changes the selectedOption. Here is my picker: struct BuilderPicker: View { let name: String let options: Array<String> @State var selectedOption = 0 var body: some View { HStack { Text(name) .font(.body) .padding(.leading, 10) Picker(selection: $selectedOption, label: Text(name)) {

How to see any changes (new row) in mongoDB?

由 送分小仙女□ 提交于 2019-12-01 07:34:29
问题 Is there any way to observe each collection (or even one) in mongoDB ? Now I think about timer to check document number or last Id, but maybe there is some possibility to implement mechanism like newDocumentAddedEvent ? 回答1: There are no triggers in MongoDB (yet?), but if you're running a replica set (as you should), your app can pretend to be a catching-up secondary, tail the oplog collection and get information about new inserts/updates. This is a very efficient approach (mongodb itself

html onchange/onblur compatibility

由 我只是一个虾纸丫 提交于 2019-12-01 06:59:01
问题 I am currently writing a web site which must be compatible with all browsers including IE back to version 6. I was wondering about compatibility issues with these two events in particular: I am using them with a <input> tag with type='text' . OnBlur OnChange Searching has found mixed responses and an incomplete list. Specifically, the question is: Are there any known issues with the above two events (could be expanded to other HTML events)? If so, what methods can be used to work around these

How do I trigger an onChange event for a hidden field?

由 元气小坏坏 提交于 2019-12-01 06:07:50
I want to fire an onChange event for hidden field, Most of the forums I've read suggests that onChange doesn't work for hidden fields, So is there a way around for that, something like Plan-B? In jQuery, you could trigger a custom event: $("#hidden_input_id").trigger("special-change"); And you can listen with: $("#hidden_input_id").on("special-change", function () { }); DEMO: http://jsfiddle.net/byKak/ Reference: .trigger() : http://api.jquery.com/trigger/ 来源： https://stackoverflow.com/questions/16601556/how-do-i-trigger-an-onchange-event-for-a-hidden-field

Input textbox onchange is not firing when data is assigned to input textbox

由 社会主义新天地 提交于 2019-12-01 04:56:53
问题 This is my HTML page <script> function set() { document.getElementById("txt").value++; } </script> <input id="txt" type="text" onchange="javascript:alert('txt changed');" value="0"> <br/> <input type="button" onclick="set()" value="Set Data"/> When I press the button, the text box value is changing, and the onchange event is not firing, but when I enter value manually in the textbox, it is firing the onchange. All I want is to call a JavaScript function when data is changed in the textbox

How do I trigger an onChange event for a hidden field?

由 拜拜、爱过 提交于 2019-12-01 03:57:11
问题 I want to fire an onChange event for hidden field, Most of the forums I've read suggests that onChange doesn't work for hidden fields, So is there a way around for that, something like Plan-B? 回答1: In jQuery, you could trigger a custom event: $("#hidden_input_id").trigger("special-change"); And you can listen with: $("#hidden_input_id").on("special-change", function () { }); DEMO: http://jsfiddle.net/byKak/ Reference: .trigger() : http://api.jquery.com/trigger/ 来源： https://stackoverflow.com

preventDefault() not working for change event

由 给你一囗甜甜゛ 提交于 2019-12-01 03:35:58
Any ideas why preventDefault is not working? Here's the code below . . . Tks! <head> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"> $(document).ready(function() { $("#text1").change(function(e) { e.preventDefault(); }); }); function myFunc() { alert("Random, annoying alert"); } </script> </head> Just one HTML element in the form: <body> <form name="test" method="post"> <input name="text1" id="text1" type="text" onchange="myFunc();"> </form> </body> Fiambre You can’t use preventDefault on change events because it’s not cancelable: $("#text1").change(function(e)
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