如果您mousemove在body标签上使用该事件.是否有可能获得鼠标当前所在的html中的哪个元素.
$('body').mousemove(function (e) {
var details = e; // can e.something return what element the mouse cursor is over?
console.log(details);
});
Run Code Online (Sandbox Code Playgroud) 为什么我的多个矩形不会画在画布上?
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="Scripts/jquery-1.9.1.min.js"></script>
</head>
<body>
<canvas id="myCanvas" width="500" height="500" style="border:1px solid red">
<p>Your browser doesn't support canvas.</p>
</canvas>
</body>
</html>
<script type ="text/javascript">
function Shape(x, y, w, h, fill) {
this.x = x;
this.y = y;
this.w = w;
this.h = h;
this.fill = fill;
}
// get canvas element.
var elem = document.getElementById('myCanvas');
// check if context exist
if (elem.getContext) {
var myRect = [];
myRect.push(new Shape(10, 0, 25, 25, "#333"))
myRect.push(new Shape(0, …Run Code Online (Sandbox Code Playgroud) 如何从javascript catch中获取更多错误详细信息?
是否有更多参数可以从捕获的错误中获取更多详细信息.
try {
var s = null;
var t = s.toString();
} catch(err) {
alert(err);
}
Run Code Online (Sandbox Code Playgroud) 使用kendo ui,并使用窗口 UI WIDGET,http: //demos.kendoui.com/web/window/index.html
是否可以像Jquery ui对话框http://jqueryui.com/dialog/#modal一样添加浅灰色的模态背景?
是否可以使背景不可点击?
为什么FileSystemWatcher会触发两次?有没有一种简单的方法来解决它?当然,如果我更新或编辑文本文件,它应该只触发一次?
这个链接在这里http://weblogs.asp.net/ashben/archive/2003/10/14/31773.aspx说
- 引发两次的事件 - 如果明确指定了事件处理程序(AddHander FSW.Created,AddressOf FSW_Created),则会引发两次事件.这是因为,默认情况下,公共事件会自动调用相应的受保护方法(OnChanged,OnCreated,OnDeleted,OnRenamed).要解决此问题,只需删除显式事件处理程序(AddHandler ...).
"删除显式事件处理程序"是什么意思?
Imports System.IO
Public Class Form2
Private Sub FileSystemWatcher1_Changed(ByVal sender As System.Object, ByVal e As System.IO.FileSystemEventArgs) Handles FileSystemWatcher1.Changed
'this fires twice
MessageBox.Show("test")
End Sub
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
FileSystemWatcher1.Path = "C:\Users\c\Desktop\test\"
FileSystemWatcher1.NotifyFilter = NotifyFilters.LastAccess Or NotifyFilters.LastWrite Or NotifyFilters.FileName Or NotifyFilters.DirectoryName Or NotifyFilters.CreationTime
FileSystemWatcher1.IncludeSubdirectories = False
FileSystemWatcher1.Filter = "text.txt"
End Sub
End Class
Run Code Online (Sandbox Code Playgroud) 使用VB.net或c#,如何获取生成的HTML源代码?
要获取页面的html源代码,我可以在下面使用它,但是这不会获得生成的源代码,它将不包含由浏览器中的javascript动态添加的任何html.如何获取最终生成的HTML源代码?
谢谢
WebRequest req = WebRequest.Create("http://www.asp.net");
WebResponse res = req.GetResponse();
StreamReader sr = new StreamReader(res.GetResponseStream());
string html = sr.ReadToEnd();
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如果我在下面尝试这个,那么它会返回没有注入JavaScript代码的文档
Public Class Form1
Dim WB As WebBrowser = Nothing
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
WB = New WebBrowser()
Me.Controls.Add(WB)
AddHandler WB.DocumentCompleted, AddressOf WebBrowser1_DocumentCompleted
WB.Navigate("mysite/Default.aspx")
End Sub
Private Sub WebBrowser1_DocumentCompleted(sender As Object, e As WebBrowserDocumentCompletedEventArgs)
'Dim htmlcode As String = WebBrowser1.Document.Body.OuterHtml()
Dim s As String = WB.DocumentText
End Sub
End Class
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HTML返回
<!DOCTYPE html>
<html …Run Code Online (Sandbox Code Playgroud) 当我尝试运行我在eclipse中开发的应用程序时,为什么蓝色应用程序播放器不会显示在我的设备管理器列表中
bluestacks App播放器正在运行,因此它应该可用.我正在使用Windows 7.

如何使用jquery 添加<thead>和<tbody>使用jquery?
问题是我的表有1或2行?
$('#myTable tr:has(th)').wrap('<thead></thead>');
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<table id="myTable">
<tr><th>1</th><th>2</th><th>3</th><th>4</th></tr>
<tr><th>1</th><th>2</th><th>3</th><th>4</th></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
</table>
Run Code Online (Sandbox Code Playgroud) 当集合什么都没有时我如何处理每个循环,我认为它会跳过但我得到一个例外?
我是否需要将foreach循环包装在if中以检查什么,只有当它不是什么都没有时,然后输入for each循环?
For Each item As String In MyStringList
'do something with each item but something myStringList will be nothing?
Next
Run Code Online (Sandbox Code Playgroud) 为什么ng-click在下面的代码中不起作用?应该很简单.我错过了什么 谢谢
(function() {
'use strict';
// Set up the app.
var mainApp = angular.module('mainApp', []);
// Create a controller.
mainApp.controller('navController', ['$scope', '$log' ,function($scope, $log) {
//$scope.firstName= "John";
//$scope.lastName= "Doe";,
$scope.openTab = function (tabNumber) {
$log.log(tabNumber);
};
var s =1;
}]);
}());Run Code Online (Sandbox Code Playgroud)
<!DOCTYPE html>
<html>
<head>
<script src="/js/angular.js"></script>
<script src="/js/app/app.js"></script>
<link rel="stylesheet" href="/css/styles.css" />
</head>
<body ng-app="mainApp">
<div class="navigation" ng-controller="navController as nc">
<!--<p>Name: <input type="text" ng-model="name"></p>
<p ng-bind="name"></p>
<p>{{name}}</p>
-->
<span ng-click="nc.openTab(1)" class="btn"> tab 1</span>
<span ng-click="nc.openTab(2)" class="btn"> tab 2</span> …Run Code Online (Sandbox Code Playgroud)javascript ×5
jquery ×3
vb.net ×3
android ×1
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bluestacks ×1
c# ×1
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eclipse ×1
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html5-canvas ×1
kendo-ui ×1
kendo-window ×1