<template> <div class="floatball" id="floatball" @mousedown="down" @touchstart.stop="down" @mousemove="move" @touchmove.stop="move" @mouseup="end" @touchend.stop="end" :style="{top:position.y+'px', left:position.x+'px'}"> 奖励规则 </div></template><script>// 鼠标位置和div的左上角位置 差值var dx,dyvar screenWidth = window.screen.widthvar screenHeight = window.screen.heightexport default { data() { return { flags: false, position: { x: 320, y: 60 }, } }, methods: { // 实现移动端拖拽 down(event){ this.flags = true; var touch ; if(event.touches){ touch = event.touches[0]; }else { touch = event; } console.log('鼠标点所在位置', touch.clientX,touch.clientY) console.log('div左上角位置', event.target.offsetTop,event.target.offsetLeft) dx = touch.clientX - event.target.offsetLeft dy = touch.clientY - event.target.offsetTop }, move() { if (this.flags) { var touch ; if (event.touches) { touch = event.touches[0]; } else { touch = event; } // 定位滑块的位置 this.position.x = touch.clientX - dx; this.position.y = touch.clientY - dy; // 限制滑块超出页面 // console.log('屏幕大小', screenWidth, screenHeight ) if (this.position.x < 0) { this.position.x = 0 } else if (this.position.x > screenWidth - touch.target.clientWidth) { this.position.x = screenWidth - touch.target.clientWidth } if (this.position.y < 0) { this.position.y = 0 } else if (this.position.y > screenHeight - touch.target.clientHeight) { this.position.y = screenHeight - touch.target.clientHeight } //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(){ console.log('end') this.flags = false; }, } }</script><style> .floatball{ color:white; height:50px; width: 50px; padding: 5px; z-index: 990; position: fixed; top: 60px; right: 320px; border-radius: 50%; background-color: rgba(29, 157, 237,0.8); }</style>
