以下代码片段的运行结果是否正确?const ctx = wx.createCanvasContext('myCanvas')ctx.save()ctx.setFillStyle('red')ctx.fillRect(10, 10, 150, 100)ctx.restore()ctx.fillRect(50, 50, 150, 100)ctx.draw()运行结果:[img=316x169]18033276670a461.png[/img]
以下代码片段的运行结果是否正确?const ctx = wx.createCanvasContext('myCanvas')ctx.save()ctx.setFillStyle('red')ctx.fillRect(10, 10, 150, 100)ctx.restore()ctx.fillRect(50, 50, 150, 100)ctx.draw()运行结果:[img=316x169]18033276670a461.png[/img]
以下代码片段的运行结果是否正确?()const ctx = wx.createCanvasContext('myCanvas')ctx.save()ctx.setFillStyle('red')ctx.fillRect(10, 10, 150, 100)ctx.restore()ctx.fillRect(50, 50, 150, 100)ctx.draw()运行结果:[img=316x169]18032e48f720e5f.png[/img]
以下代码片段的运行结果是否正确?()const ctx = wx.createCanvasContext('myCanvas')ctx.save()ctx.setFillStyle('red')ctx.fillRect(10, 10, 150, 100)ctx.restore()ctx.fillRect(50, 50, 150, 100)ctx.draw()运行结果:[img=316x169]18032e48f720e5f.png[/img]
以下代码片段的运行结果是否正确?( )const ctx = wx.createCanvasContext('myCanvas')ctx.save()ctx.setFillStyle('red')ctx.fillRect(10, 10, 150, 100)ctx.restore()ctx.fillRect(50, 50, 150, 100)ctx.draw()运行结果:[img=316x169]18035c6ec40f4f2.png[/img]
以下代码片段的运行结果是否正确?( )const ctx = wx.createCanvasContext('myCanvas')ctx.save()ctx.setFillStyle('red')ctx.fillRect(10, 10, 150, 100)ctx.restore()ctx.fillRect(50, 50, 150, 100)ctx.draw()运行结果:[img=316x169]18035c6ec40f4f2.png[/img]
oracle数据库恢复归档文件命令是()? A: restore controlfile B: restore spfile C: restore database D: restore archivelog
oracle数据库恢复归档文件命令是()? A: restore controlfile B: restore spfile C: restore database D: restore archivelog
若x’和y’分别是原问题和对偶问题的可行解,则()。 A: cTx’≤bTy’ B: cTx’≥bTy’ C: cTx’=bTy’ D: cTy’≤bTx’
若x’和y’分别是原问题和对偶问题的可行解,则()。 A: cTx’≤bTy’ B: cTx’≥bTy’ C: cTx’=bTy’ D: cTy’≤bTx’
根据以下代码,哪个选项是准确的?() A: restore 400 B: restore 403 C: restore 453 D: Compilation fails. E: An exception is thrown at runtime.
根据以下代码,哪个选项是准确的?() A: restore 400 B: restore 403 C: restore 453 D: Compilation fails. E: An exception is thrown at runtime.
已知有画布组件:[canvas canvas-id='myCanvas'][/]以下哪句代码可以用于创建该画布的上下文? A: const ctx=wx.createCanvasContext() B: const ctx=wx.createCanvasContext('canvas') C: const ctx=wx.createCanvasContext('canvasId') D: const ctx=wx.createCanvasContext('canvasId')
已知有画布组件:[canvas canvas-id='myCanvas'][/]以下哪句代码可以用于创建该画布的上下文? A: const ctx=wx.createCanvasContext() B: const ctx=wx.createCanvasContext('canvas') C: const ctx=wx.createCanvasContext('canvasId') D: const ctx=wx.createCanvasContext('canvasId')
help restore physical force.
help restore physical force.
____means to protect, preserve and restore biodiversity.
____means to protect, preserve and restore biodiversity.
canvas中二维绘图环境对象获取的语句是哪项?假设canvas为获取的canvas对象名。 A: var ctx=canvas.getContext("2d"); B: var canvas=document.getElementById("myCanvas"); C: var ctx=canvas.getContext("WebGL"); D: var ctx=canvas.getElementById("2d");
canvas中二维绘图环境对象获取的语句是哪项?假设canvas为获取的canvas对象名。 A: var ctx=canvas.getContext("2d"); B: var canvas=document.getElementById("myCanvas"); C: var ctx=canvas.getContext("WebGL"); D: var ctx=canvas.getElementById("2d");