画布(如下代码)创建后,怎样获取? [canvas id="myCanvas" width="200" height="100"] </canvas A: var canvas=document.getElementById('myCanvas'); B: var canvas=document.getElementsByName('myCanvas'); C: var canvas=document.getElementsById('myCanvas'); D: var canvas=document.getElementById('mycanvas');
画布(如下代码)创建后,怎样获取? [canvas id="myCanvas" width="200" height="100"] </canvas A: var canvas=document.getElementById('myCanvas'); B: var canvas=document.getElementsByName('myCanvas'); C: var canvas=document.getElementsById('myCanvas'); D: var canvas=document.getElementById('mycanvas');
HTML5中关于canvas说法错误的是()。 A: canvas标签本身只提供定义画布的功能 B: 可以用如下格式先定义画布<canvas id="myCanvas" width="860" height="480"> 浏览器不支持画布 </canvas> C: 进行canvas绘图,需要结合js实现 D: canvas标签既提供定义画布,也可以通过其属性,完成绘图功能
HTML5中关于canvas说法错误的是()。 A: canvas标签本身只提供定义画布的功能 B: 可以用如下格式先定义画布<canvas id="myCanvas" width="860" height="480"> 浏览器不支持画布 </canvas> C: 进行canvas绘图,需要结合js实现 D: canvas标签既提供定义画布,也可以通过其属性,完成绘图功能
HTML5画布API中创建一个宽度为200px、高度为50px的画布,以下哪句代码正确?( )。 A: <;canvas id=”myCanvas” w=”200” h=”50”>;<;/canvas>; B: <;canvas id=”myCanvas” w=”200px” h=”50px”>;<;/canvas>; C: <;canvas id=”myCanvas” width=”200” height=”50”>;<;/canvas>; D: <;canvas id=”myCanvas” width=”200px” height=”50px”>;<;/canvas>;
HTML5画布API中创建一个宽度为200px、高度为50px的画布,以下哪句代码正确?( )。 A: <;canvas id=”myCanvas” w=”200” h=”50”>;<;/canvas>; B: <;canvas id=”myCanvas” w=”200px” h=”50px”>;<;/canvas>; C: <;canvas id=”myCanvas” width=”200” height=”50”>;<;/canvas>; D: <;canvas id=”myCanvas” width=”200px” height=”50px”>;<;/canvas>;
HTML5画布API中创建一个带有1像素宽、黑色、实线边框的画布,以下哪句代码正确?( )。 A: <;canvas id=”myCanvas” style=”border:1 black solid”>;<;/canvas>; B: <;canvas id=”myCanvas” style=”border:1 black dashed”>;<;/canvas>; C: <;canvas id=”myCanvas” style=”border:1px black dashed”>;<;/canvas>; D: <;canvas id=”myCanvas” style=”border:1px black solid”>;<;/canvas>;
HTML5画布API中创建一个带有1像素宽、黑色、实线边框的画布,以下哪句代码正确?( )。 A: <;canvas id=”myCanvas” style=”border:1 black solid”>;<;/canvas>; B: <;canvas id=”myCanvas” style=”border:1 black dashed”>;<;/canvas>; C: <;canvas id=”myCanvas” style=”border:1px black dashed”>;<;/canvas>; D: <;canvas id=”myCanvas” style=”border:1px black solid”>;<;/canvas>;
Word中插入数学公式的方法是()。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"
Word中插入数学公式的方法是()。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"
定义并初始化一个用于存放我们国家的四个直辖市的数组cityName,四个直辖市为:北京,上海,天津,重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };
定义并初始化一个用于存放我们国家的四个直辖市的数组cityName,四个直辖市为:北京,上海,天津,重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };
已知有一个名为names的空列表,如何向其中添加old_driver,rain,jack,shanshan,peiqi,black_girl 元素? A: names.append("old_driver","rain","jack","shanshan","peiqi","black_girl") B: names.extend("old_driver","rain","jack","shanshan","peiqi","black_girl") C: names.insert("old_driver","rain","jack","shanshan","peiqi","black_girl") D: names.extend(["old_driver","rain","jack","shanshan","peiqi","black_girl"])
已知有一个名为names的空列表,如何向其中添加old_driver,rain,jack,shanshan,peiqi,black_girl 元素? A: names.append("old_driver","rain","jack","shanshan","peiqi","black_girl") B: names.extend("old_driver","rain","jack","shanshan","peiqi","black_girl") C: names.insert("old_driver","rain","jack","shanshan","peiqi","black_girl") D: names.extend(["old_driver","rain","jack","shanshan","peiqi","black_girl"])
以下哪个选项是正确的json数据格式: A: { "id": 2, "userName": admin, "passWord": 12345, "email": admin@qq.com} B: { id: 2, userName: "admin", passWord: "12345", email: "admin@qq.com"} C: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com",} D: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com"}
以下哪个选项是正确的json数据格式: A: { "id": 2, "userName": admin, "passWord": 12345, "email": admin@qq.com} B: { id: 2, userName: "admin", passWord: "12345", email: "admin@qq.com"} C: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com",} D: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com"}
把一个JSON格式数据赋给变量color:color = "色彩":[ "暖色":["红","橙","黄"], "冷色":["青","蓝"], "中性色":["紫","绿","黑","灰","白"] ]以下能够取到冷色“["青","蓝"]”的是哪一个选项?_
把一个JSON格式数据赋给变量color:color = "色彩":[ "暖色":["红","橙","黄"], "冷色":["青","蓝"], "中性色":["紫","绿","黑","灰","白"] ]以下能够取到冷色“["青","蓝"]”的是哪一个选项?_
在Excel中,为表格添加边框的正确的操作是()。 A: 单击"单元格"中的"边框" B: 单击"单元格"中的"边框和底纹" C: 单击"插入"中"边框" D: 单击"插入"中"单元格"
在Excel中,为表格添加边框的正确的操作是()。 A: 单击"单元格"中的"边框" B: 单击"单元格"中的"边框和底纹" C: 单击"插入"中"边框" D: 单击"插入"中"单元格"