click | 易学教程

.live() vs .on() method

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问题 I'm working on a project, in which when I keep pressing on the min/plus button without hovering off the picture with the .live() method, the function works. In the case of .on() method the function does not work. How can I fix this issue, so it works for .on() method as well? Here is an example of what I’m referring too (I fixed the error in this example, but I was using the .on method wrong). 回答1: You're not using it correctly. The replacement for .live() is $(document).on() with the event

EventHandler with custom arguments

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问题 I've been looking for an answer for about an hour on Google but I did not found exactly what I'm looking for. Basically, I have a static Helper class that helps perform many things I do frequently in my App. In this case, I have a method named "CreateDataContextMenu" that creates a context menu on a given TreeView control. public static void CreateDataContextMenu(Form parent, TreeView owner, string dataType) { ... } TreeView owner is the control in which I will associate my context menu. Then

WPF - Remove focus when clicking outside of a textbox

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问题 I have some textboxes where I would like focus to behave a little differently than normal for a WPF application. Basically, I would like them to behave more like a textbox behaves on a webpage. That is, if I click anywhere outside of the textbox, it will lose its focus. What is the best way to do so? If the answer is to programmatically remove focus, what is the best way to detect a Mouseclick outside of the bounds? What if the element I'm clicking on will be the new recipient of focus? 回答1:

in Jquery how to run code with callback before submit

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问题 I need to run some jquery code before submitting a form and there seem to be some issues. Just hear me out before you rush to recommend this: $(function() { $('form').submit( function() { /* some code */ return true; }); }); I need , after pressing the "submit" button first calculate the longtitude and latitude variables of an address using google API and then submit the form. That requires listening for a response in a callback function. The code I have so far looks like this: $("form input

pure javascript equivalent of jquery click()?

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问题 I am building a small app which captures mouse clicks. I wrote the prototype in jquery but, since it is a small app focusing on speed, embedding jquery to use just one function would be an overkill. I tried to adapt this example from JavascriptKit: document.getElementById("alphanumeric").onkeypress=function(e){ //blah..blah..blah.. } but it didn't work when I tried document.getElementsByTagName("x").onclick What am I doing wrong? 回答1: Say you have a list of p tags you would like to capture

Why isn't my checkbox change event triggered?

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问题 I have two functions. The first function translates a div click into a checked/unchecked toggle. The second function translates a checkbox change into a hide/show event. The problem is that when I use the first function to check/uncheck the box, the second function is not called. I am new to javascript, thanks. <script type="text/javascript"> $(document).ready(function() { $(":checkbox").parent().click(function(evt) { if (evt.target.type !== 'checkbox') { var $checkbox = $(":checkbox", this);

How to get a list of all elements that resides at the clicked point?

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问题 On user click I would like to get a list of all elements that resides at the clicked point . For example, if user clicks on Hello here: <div><span>Hello<span></div> I would like to get the following list: <span> element <div> element <body> element <html> element What would be the easiest method to get these elements ? 回答1: EDIT: Based on clarification, I think this is what you mean: EDIT: As pointed out by @Misha , outerWidth() and outerHeight() should be used in lieu of width() and height()

Matlab: How to get the current mouse position on a click by using callbacks

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问题 I googled near and far, but couldn't get an example of how you associate a callback to the click event in matlab. Can someone show me an example? 回答1: Define the WindowButtonDownFcn of your figure callback using the set command and an @callbackfunction tag. Like so: function mytestfunction() f=figure; set(f,'WindowButtonDownFcn',@mytestcallback) function mytestcallback(hObject,~) pos=get(hObject,'CurrentPoint'); disp(['You clicked X:',num2str(pos(1)),', Y:',num2str(pos(2))]); You can also

Difference between .click() and actually clicking a button? (javascript/jQuery)

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问题 I'm trying to figure out this weird issue I've been having, and the root cause is the difference between a live click and triggering .click() . I won't get into the details of the problem, but basically when you click on the input button it works fine (has an onclick event). But if I call .click() from somewhere else (instead of physically clicking the button) it doesn't work properly. My question is - is there a way to truly replicate an actual click on a button? EDIT The problem: I'm

make QLabel clickable using PyQt5

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问题 I have a Qlabel filled with QPixmap and I want to start a process/function once this label clicked. I had extended QLabel class as follows: from PyQt5.QtCore import * from PyQt5.QtWidgets import * from PyQt5.QtGui import * class QLabel_alterada(QLabel): clicked=pyqtSignal() def __init(self, parent): QLabel.__init__(self, QMouseEvent) def mousePressEvent(self, ev): self.clicked.emit() Then, in my pyuic5-based .py file (I used QtDesigner to do the layout) after importing the module where I save