2016-11-06 60 views
0

我想花一个画布页,我尝试使用此代码,但他们给了我一个错误;我如何在2画布之间切换可见性

 if (e.keycode == 13) { 
      theCanvas.style.visibility == 'visible' 
      theCanvas.style.visibility = 'hidden'; 
      theCanvas1.style.visibility = 'visible'; 
     } else { 
      theCanvas.style.visibility = 'visible'; 
      theCanvas1.style.visibility = 'hidden'; 
     } 
    }); 
+0

当你说*给我一个错误*,你应该添加错误! –

回答

0

试试这个

 if (e.keycode == 13) { 
      theCanvas.style.visibility = 'hidden'; 
      theCanvas1.style.visibility = 'visible'; 
    }); 

的else是不需要的,就在主if语句

希望它帮助mukund2003

+0

document.addEventListener( 'KEYDOWN',函数(E){ 如果(e.keycode == 13){ theCanvas.style.visibility = '隐藏'; theCanvas1.style.visibility = '可见'; } }); 没有工作:( –