前端vue开发：可移动的悬浮按钮的应用。
class="callback float"
@click="onClick"
@mousedown="down"
@touchstart="down"
@mousemove="move"
@touchmove="move"
@mouseup="end"
@touchend="end"
ref="fu"
>
CSS代码:
.callback p {
font-size: 16px;
color: #fff;
background: rgba(56, 57, 58, 0.5);
border-radius: 50%;
text-align: center;
width: 50px;
height: 50px;
line-height: 50px;
font-family: PingFang SC;
font-weight: 600;
box-shadow: 0 0 10px #fff;
}
.callback img {
display: block;
width: 50px;
height: 50px;
box-shadow: 0 0 10px rgb(133, 129, 129);
border-radius: 50%;
background: #fff;
}
.callback {
position: fixed;
top: 40px;
left: 20px;
z-index: 99999;
}
.float {
position: fixed;
right: 20px;
top: 60%;
touch-action: none;
text-align: center;
width: 50px;
height: 50px;
border-radius: 24px;
line-height: 48px;
color: white;
}
JS代码：data() {
return {
isLoading: false,
flags: false, //控制使用
position: {
x: 0,
y: 0,
},
nx: "",
ny: "",
dx: "",
dy: "",
xPum: "",
yPum: "",
};
},
methods: {
callback() {
this.$router.go(-1);
},
onRefresh() {
// window.location.reload();
setTimeout((res) => {
console.log(res);
this.isLoading = false;
}, 1000);
},
down() {
this.flags = true;
var touch;
if (event.touches) {
touch = event.touches[0];
} else {
touch = event;
}
this.position.x = touch.clientX;
this.position.y = touch.clientY;
this.dx = this.$refs.fu.offsetLeft;
this.dy = this.$refs.fu.offsetTop;
},
move() {
if (this.flags) {
var touch;
if (event.touches) {
touch = event.touches[0];
} else {
touch = event;
}
this.nx = touch.clientX - this.position.x;
this.ny = touch.clientY - this.position.y;
this.xPum = this.dx + this.nx;
this.yPum = this.dy + this.ny;
let width = window.innerWidth - this.$refs.fu.offsetWidth; //屏幕宽度减去自身控件宽度
let height = window.innerHeight - this.$refs.fu.offsetHeight; //屏幕高度减去自身控件高度
this.xPum
this.yPum
this.xPum > width && (this.xPum = width);
this.yPum > height && (this.yPum = height);
// if (this.xPum >= 0 && this.yPum >= 0 && this.xPum<= width &&this.yPum<= height) {
this.$refs.fu.style.left = this.xPum + "px";
this.$refs.fu.style.top = this.yPum + "px";
// }
//阻止页面的滑动默认事件
document.addEventListener(
"touchmove",
function () {
event.preventDefault();
},
false
);
}
},
//鼠标释放时候的函数
end() {
this.flags = false;
},
onClick() {
//在这里我是作为子组件来使用的
this.$emit("click");
},
},