mouseevent

问题 I need to count the number of selected files during a multiple selection by clicking on a input type="file" element of a form. I'm writing the code on my laptop and everything is working fine with this code: function counter() { var inputUploader = document.querySelector('input[type="file"]'), chosenFiles = inputUploader.files, filesCount = chosenFiles.length > 1 ? chosenFiles.length : chosenFiles.length; alert(filesCount); } <form> <div> <input id="inputUploader" type="file" name="x"

问题 I'm using Angular 1.0.6 and jQuery and I need to create a hint that will follow the mouse (change position). What I have so far is the show/hide: <div ng-repeat="item in items"> <span ng-mouseover="item.show_description=true" ng-mouseleave="item.show_description=false"> {{item.text}} </span> <div class="description-popup" ng-show="item.description && item.show_description"> {{item.description}} </div> </div> How should I change x and y position of the popup depend on mousemove event? I was

问题 I have found SWTChart library and just wonder how it would be possible to select with the mouse a range e.g. 1 to 3 on the x-axis and I would get all y-axis values which belongs to the selected x values. (source: swtchart.org) package org.swtchart.examples; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.swtchart.Chart; import org.swtchart

问题 I am interested in capturing input from the explorer mouse buttons (the special buttons on the side of mice normally used to go forward and back on web browsers). import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.layout.Pane; import javafx.stage.Stage; import javafx.scene.input.MouseButton; import static java.lang.System.*; public class MouseThing extends Application { @Override public void start(Stage stage) throws Exception { Pane pane = new Pane(); pane

问题 I want to have a widget in QML which has combination of the following behaviors: 1) Multi line edit 2) Auto scroll the content as and when I hit newline. (The content on top of the page keeps going up as and when I enter new content at the bottom) 3) Have a placeholder text functionality. As far as I know, only Text and TextField are having placeholder text property and only TextArea is having a multi line edit plus auto scroll. But If there is any such widget with all the combinations then,

问题 I am trying to listen to a mouse event in a child component from the component, but I don't get the event being fired. It works when I listen for the event in html, but not This works as you can see: Vue.config.devtools = false; Vue.config.productionTip = false; new Vue({ el: '#mouse', data: { message: 'Hover Me!' }, methods: { mouseover: function() { this.message = 'Good!' }, mouseleave: function() { this.message = 'Hover Me!' } } }); body { background: #333; } body #mouse { position:

问题 I have a html structure like : <div onmouseover="enable_dropdown(1);" onmouseout="disable_dropdown(1);"> My Groups <a href="#">(view all)</a> <ul> <li><strong>Group Name 1</strong></li> <li><strong>Longer Group Name 2</strong></li> <li><strong>Longer Group Name 3</strong></li> </ul> <hr /> Featured Groups <a href="#">(view all)</a> <ul> <li><strong>Group Name 1</strong></li> <li><strong>Longer Group Name 2</strong></li> <li><strong>Longer Group Name 3</strong></li> </ul> </div> I want the

问题 $('#clickableElement').bind({ mousedown: function(e) { console.log('mousedown on element'); $(document).bind('mouseup',function(e){ console.log('mouseup caught'); //Do some magic here $(this).unbind('mouseup'); }); }, mouseup:function(e) { //mouseup within element, no use here. } }); I'm trying to catch the mouseup event from a mousedown that's released inside or outside of an element. This code almost works, but the problem is the unbind('mouseup') which is unbinding other scripts attached

问题 When I have buttons near the button of the screen, the tooltip appears underneath the mouse. Clicking will then make the tooltip disappear, instead of clicking the button. public static void main(String[] args) { JFrame frame = new JFrame("Test"); JButton button = new JButton("Test"); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { System.out.println("action performed"); } }); button.setToolTipText("Sample tooltip text"); frame.add(button); frame

问题 How can I have a QLineEdit unabled by default but that becomes enabled when receives a mouseDoubleClickEvent() ? How can I implement the mouseDoubleClickEvent() ? I always get the error "not enough arguments" when I try something like: if self.MyQLineEdit.mouseDoubleClickEvent() == True: do something 回答1: You can not set that event with the statement: if self.MyQLineEdit.mouseDoubleClickEvent () == True: There are 2 possible options: The first is to inherit from QLineEdit : import sys from