如何检测用户用JavaScript在网页上向某个方向滑动手指?
我想知道是否有一种解决方案可以同时适用于iPhone和Android手机上的网站。
当前回答
我将这里的一些答案合并到一个脚本中，该脚本使用CustomEvent在DOM中触发滑动事件。添加0.7k的swiped-events.min.js脚本到你的页面，并监听滑动事件:
刷卡
document.addEventListener('swiped', function(e) {
console.log(e.target); // the element that was swiped
console.log(e.detail.dir); // swiped direction
});
swiped-left
document.addEventListener('swiped-left', function(e) {
console.log(e.target); // the element that was swiped
});
swiped-right
document.addEventListener('swiped-right', function(e) {
console.log(e.target); // the element that was swiped
});
swiped-up
document.addEventListener('swiped-up', function(e) {
console.log(e.target); // the element that was swiped
});
swiped-down
document.addEventListener('swiped-down', function(e) {
console.log(e.target); // the element that was swiped
});
你也可以直接附加到一个元素:
document.getElementById('myBox').addEventListener('swiped-down', function(e) {
console.log(e.target); // the element that was swiped
});
可选配置
您可以指定以下属性来调整页面中的滑动交互功能(这些是可选的)。
<div data-swipe-threshold="10"
data-swipe-timeout="1000"
data-swipe-ignore="false">
Swiper, get swiping!
</div>
要在应用程序范围内设置默认值，请在最顶部的元素上设置配置属性:
<body data-swipe-threshold="100" data-swipe-timeout="250">
<div>Swipe me</div>
<div>or me</div>
</body>
源代码可在Github
其他回答
我将这里的一些答案合并到一个脚本中，该脚本使用CustomEvent在DOM中触发滑动事件。添加0.7k的swiped-events.min.js脚本到你的页面，并监听滑动事件:
刷卡
document.addEventListener('swiped', function(e) {
console.log(e.target); // the element that was swiped
console.log(e.detail.dir); // swiped direction
});
swiped-left
document.addEventListener('swiped-left', function(e) {
console.log(e.target); // the element that was swiped
});
swiped-right
document.addEventListener('swiped-right', function(e) {
console.log(e.target); // the element that was swiped
});
swiped-up
document.addEventListener('swiped-up', function(e) {
console.log(e.target); // the element that was swiped
});
swiped-down
document.addEventListener('swiped-down', function(e) {
console.log(e.target); // the element that was swiped
});
你也可以直接附加到一个元素:
document.getElementById('myBox').addEventListener('swiped-down', function(e) {
console.log(e.target); // the element that was swiped
});
可选配置
您可以指定以下属性来调整页面中的滑动交互功能(这些是可选的)。
<div data-swipe-threshold="10"
data-swipe-timeout="1000"
data-swipe-ignore="false">
Swiper, get swiping!
</div>
要在应用程序范围内设置默认值，请在最顶部的元素上设置配置属性:
<body data-swipe-threshold="100" data-swipe-timeout="250">
<div>Swipe me</div>
<div>or me</div>
</body>
源代码可在Github
我之前使用的方法是，您必须检测mousedown事件，记录其x,y位置(任何相关的位置)，然后检测mouseup事件，并减去两个值。
一些mod的顶部回答(不能评论…)来处理短滑动
document.addEventListener('touchstart', handleTouchStart, false);
document.addEventListener('touchmove', handleTouchMove, false);
var xDown = null;
var yDown = null;
function handleTouchStart(evt) {
xDown = evt.touches[0].clientX;
yDown = evt.touches[0].clientY;
};
function handleTouchMove(evt) {
if ( ! xDown || ! yDown ) {
return;
}
var xUp = evt.touches[0].clientX;
var yUp = evt.touches[0].clientY;
var xDiff = xDown - xUp;
var yDiff = yDown - yUp;
if(Math.abs( xDiff )+Math.abs( yDiff )>150){ //to deal with to short swipes
if ( Math.abs( xDiff ) > Math.abs( yDiff ) ) {/*most significant*/
if ( xDiff > 0 ) {/* left swipe */
alert('left!');
} else {/* right swipe */
alert('right!');
}
} else {
if ( yDiff > 0 ) {/* up swipe */
alert('Up!');
} else { /* down swipe */
alert('Down!');
}
}
/* reset values */
xDown = null;
yDown = null;
}
};
jQuery Mobile还包括滑动支持:http://api.jquerymobile.com/swipe/
例子
$("#divId").on("swipe", function(event) {
alert("It's a swipe!");
});
threshold, timeout swipe, swipeBlockElems添加。
document.addEventListener('touchstart', handleTouchStart, false);
document.addEventListener('touchmove', handleTouchMove, false);
document.addEventListener('touchend', handleTouchEnd, false);
const SWIPE_BLOCK_ELEMS = [
'swipBlock',
'handle',
'drag-ruble'
]
let xDown = null;
let yDown = null;
let xDiff = null;
let yDiff = null;
let timeDown = null;
const TIME_THRESHOLD = 200;
const DIFF_THRESHOLD = 130;
function handleTouchEnd() {
let timeDiff = Date.now() - timeDown;
if (Math.abs(xDiff) > Math.abs(yDiff)) { /*most significant*/
if (Math.abs(xDiff) > DIFF_THRESHOLD && timeDiff < TIME_THRESHOLD) {
if (xDiff > 0) {
// console.log(xDiff, TIME_THRESHOLD, DIFF_THRESHOLD)
SWIPE_LEFT(LEFT) /* left swipe */
} else {
// console.log(xDiff)
SWIPE_RIGHT(RIGHT) /* right swipe */
}
} else {
console.log('swipeX trashhold')
}
} else {
if (Math.abs(yDiff) > DIFF_THRESHOLD && timeDiff < TIME_THRESHOLD) {
if (yDiff > 0) {
/* up swipe */
} else {
/* down swipe */
}
} else {
console.log('swipeY trashhold')
}
}
/* reset values */
xDown = null;
yDown = null;
timeDown = null;
}
function containsClassName (evntarget , classArr) {
for (var i = classArr.length - 1; i >= 0; i--) {
if( evntarget.classList.contains(classArr[i]) ) {
return true;
}
}
}
function handleTouchStart(evt) {
let touchStartTarget = evt.target;
if( containsClassName(touchStartTarget, SWIPE_BLOCK_ELEMS) ) {
return;
}
timeDown = Date.now()
xDown = evt.touches[0].clientX;
yDown = evt.touches[0].clientY;
xDiff = 0;
yDiff = 0;
}
function handleTouchMove(evt) {
if (!xDown || !yDown) {
return;
}
var xUp = evt.touches[0].clientX;
var yUp = evt.touches[0].clientY;
xDiff = xDown - xUp;
yDiff = yDown - yUp;
}
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