click | 易学教程

Clicking an element on a page through Chrome Extension

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问题 I am trying to create a chrome extension that will click on an element on a webpage when you click a button on the extension, but for some reason it does nothing no matter what I try. I've got this so far manifest.json { "manifest_version": 2, "name": "Such Activity", "description": "Wow", "version": "1.0", "permissions": [ "tabs", "<all_urls>" ], "browser_action": { "default_icon": "icon.png", "default_popup": "popup.html" }, "content_scripts": [ { "matches": [ "<all_urls>" ], "js": [

make QLabel clickable using PyQt5

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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 the extended QLabel class,inside the automatically generated setupui, function I changed my Label from

VUE 关键字

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转 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>修饰符：self capture stop prevent的使用</title> <script type="text/javascript" src="vue.js"></script> </head> <body> <div id="demo">           <

exit application when click button - iOS [duplicate]

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Possible Duplicate: Exit application in iOS 4.0 I have a AlertView which displays some text and an "OK" button. Is there any way to exit application when clicked on OK button? exit(X) , where X is a number (according to the doc) should work. But it is not recommended by Apple and won't be accepted by the AppStore. Why? Because of these guidelines (one of my app got rejected): We found that your app includes a UI control for quitting the app. This is not in compliance with the iOS Human Interface Guidelines, as required by the App Store Review Guidelines. Please refer to the attached screenshot

WPF Change button background image when clicked

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I have created a Button and set its background Image . What I want is when the Button is clicked, I want to replace the background Image with another one How can I accomplish this? Here is my code with the Button : <Button x:Name="PopulationReporting" Click="PopulationReporting_Clicked" Width="172" Height="60" Margin="57,170,57,184"> <Button.Background > <ImageBrush ImageSource="images/img-2.png" /> </Button.Background> </Button> d.moncada You can do this programmatically (see example here ) or You can use DataTriggers , where the DataTrigger is bound to a bool value in your ViewModel and

Jquery: detect if middle or right mouse button is clicked, if so, do this:

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Check out my jsfiddle demo , if e.which == 1 then when you left click the h2 it will e.which == 2 or e.which == 3 then it wont work. 2 is the middle mouse button, and 3 is the right mouse button. i found this too: JQuery provides an e.which attribute, returning 1, 2, 3 for left, middle, and right click respectively. So you could also use if (e.which == 3) { alert("right click"); } This code isn't working: code: $("h2").live('click', function(e) { if( e.which == 2 ) { e.preventDefault(); alert("middle button"); } }); burntblark You may want to trap the mousedown event, and you also need to

Click lost on focusing form

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问题 Question: Is there a way to always let a click, that brings a form in to focus, through an have effect on the form? Background: With my (C# win form) application out of focus I can hover the form and get shades and borders indicating where my mouse is. Clicking for example a menu entry (File) the form gets focus but the file menu does not get click. This takes an additional click. For an ordinary button on the form only one click is required. 回答1: This can be fixed by setting focus before the

Jquery mobile click event doesn't work

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问题 When i try to trigger an event click with a mobile browser the "click" doesn't work. With Firefox for Desktop works fine. This is my html: <li class='brand'></li> And this is my jquery: $('.brand').click(function() { alert('ok') }); Can you explain me? Thanks. 回答1: Use touch events $(document).on('click touchstart', '.brand', function() { alert('ok'); }); http://jsfiddle.net/9x9fm/ 回答2: Try to use event delegation here: $(document).on('click', '.brand', function() { alert('ok'); }); 回答3: Try

Click source in JavaScript and jQuery, human or automated?

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问题 We all know that you can simulate click or any other event on an element using one of these ways: $('#targetElement').trigger('eventName'); $('#targetElement').click(); I have encountered a situation in which, I should know how an element is clicked. I should know if it's been clicked automatically via code, or by pressing mouse button. Is there anyway I can do it without hacks or workarounds? I mean, is there anything built into browsers' event object, JavaScript, or jQuery that can tell us

get click event of each rectangle inside canvas?

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I dont know how to register click event on each rectangle. here is the sample: http://jsfiddle.net/9WWqG/1/ Matt King You're basically going to have to track where your rectangles are on the canvas, then set up an event listener on the canvas itself. From there you can take the coordinates of the click event and go through all your rectangles to test for 'collisions'. Here's an example of doing just that: http://jsfiddle.net/9WWqG/2/ html: <canvas id="myCanvas" width="300" height="150"> </canvas> javascript: // get canvas element. var elem = document.getElementById('myCanvas'); function