<div> <div></div> </div>
2.js
var flag = false; var cur = { x: 0, y: 0 } var nx, ny, dx, dy, x, y; function down() { flag = true; var touch; if(event.touches) { touch = event.touches[0]; } else { touch = event; } cur.x = touch.clientX; cur.y = touch.clientY; dx = div2.offsetLeft; dy = div2.offsetTop; } function move() { if(flag) { var touch; if(event.touches) { touch = event.touches[0]; } else { touch = event; } nx = touch.clientX - cur.x; ny = touch.clientY - cur.y; x = dx + nx; y = dy + ny; div2.style.left = x + "px"; div2.style.top = y + "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 function end() { flag = false; } var div2 = document.getElementById("div2"); div2.addEventListener("mousedown", function() { down(); }, false); div2.addEventListener("touchstart", function() { down(); }, false) div2.addEventListener("mousemove", function() { move(); }, false); div2.addEventListener("touchmove", function() { move(); }, false) document.body.addEventListener("mouseup", function() { end(); }, false); div2.addEventListener("touchend", function() { end(); }, false);
效果：
