How to use touch event to realize the effect of sliding up and down pages in html5
This article introduces the relevant knowledge of "how to use touch events in html5 to achieve the effect of sliding up and down pages". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!
The html5 touch event realizes the effect of sliding up and down the page.
2014-4-29
* {margin: 0; padding: 0;}
# outer {width:90%; height: 490px; background: # 000; margin: auto; overflow: hidden;}
# inner {width:80%; height: 2000px; background: # f67d42; margin: auto; position:relative; top:0;}
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Coordinates when var startX,// touches
StartY
X, / / sliding distance
Y
AboveY=0; / / set a global variable to record the position of the last internal block slide
Var inner=document.getElementById ("inner")
Function touchSatrt (e) {/ / Touch
E.preventDefault ()
Var touch=e.touches [0]
StartY = touch.pageY; / / coordinates at the time of touch
}
Function touchMove (e) {/ / Slide
E.preventDefault ()
Var touch = e.touches [0]
Y = touch.pageY-startY;// sliding distance
/ / inner.style.webkitTransform = 'translate (' + 0 +'px,'+ y +'px)'; / / you can also use css3
Inner.style.top=aboveY+y+ "px"; / / in this sentence
}
Function touchEnd (e) {/ / fingers off the screen
E.preventDefault ()
AboveY=parseInt (inner.style.top); / / record the sliding position of the internal slider at the end of touch. It is reflected in the global variable that it must be converted to an integer number with parseInt ().
} / /
Document.getElementById ("outer") .addEventListener ('touchstart', touchSatrt,false)
Document.getElementById ("outer") .addEventListener ('touchmove', touchMove,false)
Document.getElementById ("outer") .addEventListener ('touchend', touchEnd,false)
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