优化键盘事件处理

qiuxiang · qiuxiang · commit 901b567045ca · 2016-04-04T19:56:38.000+08:00
diff --git a/app.js b/app.js
@@ -91,6 +91,7 @@ Application.prototype.hotkey = function (event) {
   if (event.target.tagName == 'BODY') {
     var direction = {37: LEFT, 38: TOP, 39: RIGHT, 40: BOTTOM}[event.keyCode]
     if (typeof direction != 'undefined') {
+      event.preventDefault()
       if (direction == this.boxbot.bot.getCurrentDirection()) {
         this.boxbot.run(this.boxbot.go).then(null, function (e) {
           console.log(e)
@@ -99,10 +100,9 @@ Application.prototype.hotkey = function (event) {
         this.boxbot.run(this.boxbot.turn, [direction])
       }
     } else if (event.keyCode == 32) {
+      event.preventDefault()
       this.boxbot.run(this.boxbot.build)
     }
-    //防止操作键盘上下键时，导致整个页面的上下移动
-    event.preventDefault()
   }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -91,6 +91,7 @@ Application.prototype.hotkey = function (event) {`
`91`	`91`	`if (event.target.tagName == 'BODY') {`
`92`	`92`	`var direction = {37: LEFT, 38: TOP, 39: RIGHT, 40: BOTTOM}[event.keyCode]`
`93`	`93`	`if (typeof direction != 'undefined') {`
	`94`	`+ event.preventDefault()`
`94`	`95`	`if (direction == this.boxbot.bot.getCurrentDirection()) {`
`95`	`96`	`this.boxbot.run(this.boxbot.go).then(null, function (e) {`
`96`	`97`	`console.log(e)`
`@@ -99,10 +100,9 @@ Application.prototype.hotkey = function (event) {`
`99`	`100`	`this.boxbot.run(this.boxbot.turn, [direction])`
`100`	`101`	`}`
`101`	`102`	`} else if (event.keyCode == 32) {`
	`103`	`+ event.preventDefault()`
`102`	`104`	`this.boxbot.run(this.boxbot.build)`
`103`	`105`	`}`
`104`		`- //防止操作键盘上下键时，导致整个页面的上下移动`
`105`		`- event.preventDefault()`
`106`	`106`	`}`
`107`	`107`	`}`
`108`	`108`