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html5搖一搖代碼優(yōu)化包括DeviceMotionEvent等等

  發(fā)布時(shí)間：2014-09-01 15:26:37   作者：佚名   我要評論
對DeviceMotionEvent進(jìn)行優(yōu)化，除無用的代碼重新封裝DeviceMotionEven，另外動(dòng)畫不執(zhí)行完畢就不能繼續(xù)執(zhí)行DeviceMotionEvent事件，所以這點(diǎn)也要進(jìn)行優(yōu)化
首先對DeviceMotionEvent進(jìn)行優(yōu)化；

去除無用的代碼，重新封裝DeviceMotionEven

復(fù)制代碼
代碼如下:

if(window.DeviceMotionEvent) {
var speed = 25;//定義一個(gè)數(shù)值
var x = y = z = lastX = lastY = lastZ = 0;//重置所有數(shù)值
window.addEventListener('devicemotion', function(){
var acceleration =event.accelerationIncludingGravity;//將傳感值賦給acceleration
x = acceleration.x;
y = acceleration.y;
z = acceleration.z;
if(Math.abs(x-lastX) > speed || Math.abs(y-lastY) > speed ) {
// TODO:在此處可以實(shí)現(xiàn)搖一搖之后所要進(jìn)行的數(shù)據(jù)邏輯操作
donghua();
}
lastX = x;
lastY = y;
lastZ = z;
}, false);
}

由于實(shí)際項(xiàng)目中有很多需求無法很好的實(shí)現(xiàn)，

比如：動(dòng)畫不執(zhí)行完畢就不能繼續(xù)執(zhí)行DeviceMotionEvent事件；

所以做了進(jìn)一步優(yōu)化；

復(fù)制代碼
代碼如下:

var f=1;
function donghua(){
//動(dòng)畫事件
$(".img").animate({left:'0',opacity:'1'},700,function(){f=1;});
});
if(window.DeviceMotionEvent) {
var speed = 25;//定義一個(gè)數(shù)值
var x = y = z = lastX = lastY = lastZ = 0;//重置所有數(shù)值
window.addEventListener('devicemotion', function(){
var acceleration =event.accelerationIncludingGravity;//將傳感值賦給acceleration
x = acceleration.x;
y = acceleration.y;
z = acceleration.z;
if(Math.abs(x-lastX) > speed || Math.abs(y-lastY) > speed ) {
// TODO:在此處可以實(shí)現(xiàn)搖一搖之后所要進(jìn)行的數(shù)據(jù)邏輯操作
if(f==1){
donghua();
f=0;
}
}
lastX = x;
lastY = y;
lastZ = z;
}, false);
}

現(xiàn)在就完美了

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