我一直在看教程,但我似乎无法弄清楚我哪里出错了.这似乎应该是非常直接的,但它给了我一些问题.下面是一些用于为canvas对象创建鼠标侦听器的简单代码.当单击画布时,当前未调用clickReporter函数.任何想法为什么不呢？
HTML5
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Play Area 2 - Mouse Events and the Canvas</title>
<script src="play_area_2.js" type="text/javascript"></script>
</head>
<body onload="init();">
<canvas id="myCanvas" width="500" height="400">
Your browser dosen't support the HTML5 canvas.</canvas><br />
</body>
</html>
JavaScript的
var canvas;
var context;
function init() {
canvas = document.getElementById("myCanvas");
context = canvas.getContext("2d");
drawBox();
canvas.addEventListener('onclick', clickReporter, false);
}
function clickReporter(e) {
alert("clicked");
}
function drawBox() {
context.fillStyle = "black";
context.strokeRect(20, 20, canvas.width-20, canvas.height-20);
}
我在反序列化包含0到多个子对象的对象时遇到了一些麻烦,这些对象可以包含字符串或特定值的字符串数组.
这是一个JSON示例
{
"name": "process name",
"tasks": [{
"name": "task 1",
"fields": [{
"name": "field 1",
"value": "123abc"
},
{
"name": "field 2",
"value": ["value 1", "value 2"]
}
]
},
{
"name": "task 2",
"fields": []
}]
}
我有一个Java实体设置来匹配这个结构,如下所示:
public class Process {
public Process() {}
public String name;
public Task[] tasks;
}
public class Task {
public Task() {}
public String name;
public Field[] fields;
}
public class Field {
public Field() field;
public String name;
public String …这是我第一次尝试使用 Clojure，我正在尝试在我的build.gradle文件中生成一些任务。我遇到了复杂的错误，例如：
* Where:
Build file '/Users/austin/Repositories/test/build.gradle' line: 47
* What went wrong:
A problem occurred evaluating root project 'test'.
Cannot set the value of read-only property 'src' for task ':downloadDriverfirefox' of type de.undercouch.gradle.tasks.download.Download.
我相当确定这只是我对常规语言缺乏经验，但我真的可以使用一些指示来指出我哪里出错了。
* Where:
Build file '/Users/austin/Repositories/test/build.gradle' line: 47
* What went wrong:
A problem occurred evaluating root project 'test'.
Cannot set the value of read-only property 'src' for task ':downloadDriverfirefox' of type de.undercouch.gradle.tasks.download.Download.
我陷入了困境,试图找出构建CRUD测试的最佳方法.在我的应用程序中,用户可以创建几种类型的"任务".我目前的实现类似于以下内容:
Scenario: Create Task-Type A
Given I am on a user's profile page
And Have access to create tasks
When I create a new task with a unique title and description
Then The confirmation prompt should display
Scenario: Read the Task-Type A
Given A new task was created
When I search the text on the page for the unique title
Then I should find the task
And All the details of the task should match what was created …bdd ×1
crud ×1
dom-events ×1
gradle ×1
gson ×1
html ×1
html5-canvas ×1
java ×1
javascript ×1
json ×1
nunit ×1
specflow ×1