我有一个名为x的变量,它将作为起点,myCount用于计数用户完成的每次滑动,最后一个变量dist返回距起点多远的特定数字.
我想将-1存储在myCount中,如果dist将被用户拖至-201以下(在移动设备中滑动)到左侧.
存储正数可以正常工作(通过向右拖动),但是从不存储负数.
到目前为止,这是我自己所做的：
$(function stripeAnimeModule() {
// Variables
var screen = $('.page1'),buttons = $('.buttons').find('.button'),myCount = 1,x,dist;
// Functions
function clicked(e) {
if ($(this).hasClass('prev')) {
myCount -= 1;
console.log(myCount,'this is clicked');
} else {
myCount += 1;
console.log(myCount);
}
}
function touchStart(e) {
return x = e.touches[0].pageX;
e.preventDefault();
}
function touchMove(e) {
var drag = e.touches[0].pageX;
var dist = Math.sqrt(x + drag);
e.preventDefault();
}
function touchEnd(e) {
var dist = e.changedTouches[0].pageX - x;
if (dist < Math.abs(-200)) {
myCount = myCount;
console.log('nothing',dist,myCount);
} else if (dist > 201) {
myCount += 1;
console.log('distance is: ' + dist,'myCount is: '+ myCount);
} else if (dist > -201) {
myCount -= 1;
console.log('distance is: ' + dist,'myCount is: '+ myCount);
}
e.stopPropagation();
e.preventDefault();
}
buttons.on({click: clicked});
screen.bind({touchstart:touchStart,touchmove:touchMove,touchend: touchEnd});
})* {
margin: 0;
padding: 0;
}
ul li {
list-style: none;
}
a {
display: block;
}
.page1 {
position: absolute;
width: 100vw;
height: 100vh;
background-color: grey;
}
.buttons {
z-index: 1;
}
.prev {
position: absolute;
left: 0;
margin: 0 40px;
}
.shrink {
position: absolute;
}
.next {
position: absolute;
right: 0;
margin: 0 40px;
}<div class="page1" href="#"></div>
<ul class="buttons">
<li class="button prev">Prev</li>
<li class="shrink"></li>
<li class="button next">Next</li>
</ul>
<br><br><br><br><br><br><br><br><br><br><br><br><br>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>最佳答案
$(function stripeAnimeModule() {
// Variables
var screen = $('.page1'),'this is clicked');
} else {
myCount += 1;
console.log(myCount);
}
}
function touchStart(e) {
return x = e.touches[0].pageX;
e.preventDefault();
}
function touchMove(e) {
var drag = e.touches[0].pageX;
var dist = Math.sqrt(x + drag);
e.preventDefault();
}
function touchEnd(e) {
var dist = e.changedTouches[0].pageX - x;
if (dist > 201) {
myCount += 1;
console.log('distance is: ' + dist,'myCount is: '+ myCount);
} else if (dist < -201) {
myCount -= 1;
console.log('distance is: ' + dist,'myCount is: '+ myCount);
} else {
myCount = myCount;
console.log('nothing',myCount);
}
e.stopPropagation();
e.preventDefault();
}
buttons.on({click: clicked});
screen.bind({touchstart:touchStart,touchend: touchEnd});
})* {
margin: 0;
padding: 0;
}
ul li {
list-style: none;
}
a {
display: block;
}
.page1 {
position: absolute;
width: 100vw;
height: 100vh;
background-color: grey;
}
.buttons {
z-index: 1;
}
.prev {
position: absolute;
left: 0;
margin: 0 40px;
}
.shrink {
position: absolute;
}
.next {
position: absolute;
right: 0;
margin: 0 40px;
}<div class="page1" href="#"></div>
<ul class="buttons">
<li class="button prev">Prev</li>
<li class="shrink"></li>
<li class="button next">Next</li>
</ul>
<br><br><br><br><br><br><br><br><br><br><br><br><br>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>请看看,让我知道这是否是您想要的.
