私はスワイプ効果を実装していますが、x、y座標を計算して上部divの位置を移動し、画面幅でラッパー（一番上のdiv）を移動するので、スワイプ効果のように見えます。
今私の問題は、画面に表示されている次のdivのどれがわからないか、それを操作する必要があることです.DIVに表示されている現在のdiv IDを取得できる方法はありますか?
以下は私のJSコードです
(function() {
var swipey = {
slideContainer: null, //<ul> element object that holds the image slides
wrapper: null, //meant for masking/clipping
slides: null, //array of all slides i.e <li> elements
distanceX: 0, //distance moved in X direction i.e left or right
startX: 0, //registers the initial touch co-ordinate
preferredWidth: 0, //dynamic variable to set width
preferredHeight: 0, //dynamic variable to set height
direction: "", //direction of movement
timer: null, //timer that set starts when touch starts
timerCounter: 0, //counter variable for timer
hasSwipeStarted: false, //boolen to chk whether touch has started
maxDistance: 0, //maximum distance in X direction that slide container can move
currentDistance: 0, //current distance moved by slide container through translate
//detect touch and then automatically assign events
isTouchSupported: 'ontouchstart' in window.document,
initSwipey: function() {
// alert('in initSwipey');
//scroll the window up to hide the address bar of the browser.
window.setTimeout(function() {
window.scrollTo(0, 1);
}, 100);
/*mapping touch events to mouse events. Automatic registration of event
based on the device. If touch enabled then touch event is registered.
and if desktop browser then mouse event is registered.*/
swipey.startEvent = swipey.isTouchSupported ? 'touchstart' : 'mousedown',
swipey.moveEvent = swipey.isTouchSupported ? 'touchmove' : 'mousemove',
swipey.endEvent = swipey.isTouchSupported ? 'touchend' : 'mouseup',
//get all the instances of the HTML elements
swipey.wrapper = document.getElementById("wrapper");
swipey.slideContainer = document.getElementById("sitePageContainer");
//swipey.slides = slideContainer.getElementsByTagName("li");
swipey.slides = document.getElementsByClassName("sitePage");
//for iPhone, the width and height
swipey.preferredWidth = window.innerWidth;
// alert("swipey.preferredWidth: " + swipey.preferredWidth);
swipey.preferredHeight = window.innerHeight; //510 for android
// alert("swipey.preferredHeight: " + swipey.preferredHeight);
//setting the width and height to our wrapper with overflow = hidden
swipey.wrapper.style.width = swipey.preferredWidth + "px";
// alert("swipey.wrapper.style.width: " + swipey.wrapper.style.width);
swipey.wrapper.style.height = swipey.preferredHeight + "px";
// alert("swipey.wrapper.style.height: " + swipey.wrapper.style.height);
//setting the width to our <ul> element which holds all the <li> elements
swipey.slideContainer.style.height = swipey.preferredHeight + "px";
// alert("swipey.slideContainer.style.height: " + swipey.slideContainer.style.height);
swipey.slideContainer.style.width = swipey.slides.length * swipey.preferredWidth + "px";
// alert("swipey.slideContainer.style.width: " + swipey.slideContainer.style.width);
//display the <ul> container now
swipey.slideContainer.style.display = "inline-block";
//setting width and height for <li> elements - the slides
for(var i=0;i<swipey.slides.length;i++)
{
swipey.slides[i].style.width = swipey.preferredWidth + "px";
swipey.slides[i].style.height = swipey.preferredHeight + "px";
}
//calculating the max distance of travel for Slide Container i.e <ul> element
swipey.maxDistance = swipey.slides.length * swipey.preferredHeight;
//initialize and assign the touch events
swipey.initEvents();
},
initEvents: function() {
//registering touch events to the wrapper
//$('#wrapper').bind(swipey.startEvent, swipey.startHandler );
$('#wrapper').bind(swipey.startEvent, function(e){
$('#wrapper').bind(swipey.moveEvent, swipey.moveHandler );
} );
$('#wrapper').bind(swipey.endEvent, swipey.endHandler );
//swipey.wrapper.addEventListener(swipey.startEvent, swipey.startHandler, false);
//swipey.wrapper.addEventListener(swipey.moveEvent, swipey.moveHandler, false);
//swipey.wrapper.addEventListener(swipey.endEvent, swipey.endHandler, false);
},
//funciton called when touch start event is fired i.e finger is pressed on the screen
startHandler: function(event) {
//create appropriate event object to read the touch/mouse co-ordinates
var eventObj = swipey.isTouchSupported ? event.touches[0] : event;
//stores the starting X co-ordinate when finger touches the device screen
swipey.startX = eventObj.pageX;
//timer is set on
swipey.timer = setInterval(function() {
swipey.timerCounter++;
}, 10);
swipey.hasSwipeStarted = true;
event.preventDefault(); //prevents the window from scrolling.
},
//funciton called when touch move event is fired i.e finger is dragged over the screen
moveHandler: function(event) {
if (swipey.hasSwipeStarted) {
//create appropriate event object to read the touch/mouse co-ordinates
var eventObj = swipey.isTouchSupported ? event.touches[0] : event;
swipey.distanceX = eventObj.pageX - swipey.startX;
//move the slide container along with the movement of the finger
swipey.slideContainer.style.webkitTransform = "translate3d(" + (swipey.distanceX + swipey.currentDistance) + "px, 0,0)";
}else{
swipey.startHandler(event);
}
},
//funciton called when touch end event is fired i.e finger is released from screen
endHandler: function(event) {
$('#wrapper').unbind(swipey.moveEvent, swipey.moveHandler );
clearInterval(swipey.timer); //timer is stopped
if(swipey.distanceX == 0) //if the intention is to tap on the image then open a link
{
var link_url = event.target.getAttribute("link"); //read the link from <img /> element
// window.open(link_url,"_blank");
}
else
{
if (swipey.distanceX > 0) {
swipey.direction = "right";
}
if (swipey.distanceX < 0) {
swipey.direction = "left";
}
//the following conditions have been discussed in details
if ((swipey.direction == "right" && swipey.currentDistance == 0) || (swipey.direction == "left" && swipey.currentDistance == -(swipey.maxDistance - swipey.preferredWidth))) {
swipey.comeBack();
}
else if (swipey.timerCounter < 30 && swipey.distanceX > 10) {
swipey.moveRight();
}
else if (swipey.timerCounter < 30 && swipey.distanceX < -10) {
swipey.moveLeft();
}
else if (swipey.distanceX <= -(swipey.preferredWidth / 2)) { //-160
swipey.moveLeft();
}
else if (swipey.distanceX >= (swipey.preferredWidth / 2)) { //160
swipey.moveRight();
}
else {
swipey.comeBack();
}
}
swipey.timerCounter = 0; //reset timerCounter
swipey.hasSwipeStarted = false; //reset the boolean var
swipey.distanceX = 0; //reset the distance moved for next iteration
//alert(event.screenX+"::"+event.screenY);
var element = document.elementFromPoint(event.screenX, event.screenY);
var $element = $(element);
alert($element.attr('id'));
$("div.fixHeader").hide();
$("#"+$element.attr('id')+" div.fixHeader").show();
},
moveLeft: function() {
swipey.currentDistance += -swipey.preferredWidth;
swipey.slideContainer.style.webkitTransitionDuration = 300 + "ms";
//using CSS3 transformations - translate3d function for movement
swipey.slideContainer.style.webkitTransform = "translate3d(" + swipey.currentDistance + "px, 0,0)";
},
moveRight: function() {
swipey.currentDistance += swipey.preferredWidth;
swipey.slideContainer.style.webkitTransitionDuration = 300 + "ms";
swipey.slideContainer.style.webkitTransform = "translate3d(" + swipey.currentDistance + "px, 0,0)";
},
comeBack: function() {
swipey.slideContainer.style.webkitTransitionDuration = 250 + "ms";
swipey.slideContainer.style.webkitTransitionTimingFunction = "ease-out";
swipey.slideContainer.style.webkitTransform = "translate3d(" + swipey.currentDistance + "px, 0,0)";
}
}; //end of swipey object
window.swipeyObj = swipey; //expose to global window object
})();
window.onload = function() {
swipeyObj.initSwipey();
} //invoke the init method to get started
アップデート:
以下は構造です。現在、sitePageContainer をスライドさせており、sitePage が画面に表示されています。画面に表示されている div (partypicturespage1 または partypicturespage2) を知りたいです。
<div id="wrapper">
<div id="sitePageContainer">
<div class="sitePage" id="partypicturespage1"></div>
<div class="sitePage" id="partypicturespage2"></div>