js控制底层滚动 //设置底层禁止滚动（true：禁止滚动；false:打开滚动） function stopBodyScroll (isFixed) { var bodyEl = document.body; if (isFixed) { scrollTop = $(window).scrollTop(); bodyEl.style.position = 'fixed'; bodyEl.style.width = '100%'; } else { bodyEl.style.position = ''; document.body.scrollTop = scrollTop; } }

页面鼠标点击之处出现美丽小心心 山也不说了直接上代码 (function(window,document,undefined){ var hearts = []; window.requestAnimationFrame = (function(){ return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (callback){ setTimeout(callback,1000/60); } })(); init(); function init(){ css(".heart{width: 10px;height: 10px;position: fixed;background: #f00;transform: rotate(45deg);-webkit-transform: rotate(45deg);-moz-transform: rotate(45deg);}.heart:after,.heart:before{content: '';width: inherit;height: inherit;background: inherit;border-radius: 50%;-webkit-border-radius: 50%;-moz-border-radius: 50%;position: absolute;}.heart:after{top: -5px;}.heart:before{left: -5px;}"); attachEvent(); gameloop(); } function gameloop(){ for(var i=0;i<hearts.length;i++){ if(hearts[i].alpha <=0){ document.body.removeChild(hearts[i].el); hearts.splice(i,1); continue; } hearts[i].y--; hearts[i].scale += 0.004; hearts[i].alpha -= 0.013; hearts[i].el.style.cssText = "left:"+hearts[i].x+"px;top:"+hearts[i].y+"px;opacity:"+hearts[i].alpha+";transform:scale("+hearts[i].scale+","+hearts[i].scale+") rotate(45deg);background:"+hearts[i].color; } requestAnimationFrame(gameloop); } function attachEvent(){ var old = typeof window.onclick==="function" && window.onclick; window.onclick = function(event){ old && old(); createHeart(event); } } function createHeart(event){ var d = document.createElement("div"); d.className = "heart"; hearts.push({ el : d, x : event.clientX - 5, y : event.clientY - 5, scale : 1, alpha : 1, color : randomColor() }); document.body.appendChild(d); } function css(css){ var style = document.createElement("style"); style.type="text/css"; try{ style.appendChild(document.createTextNode(css)); }catch(ex){ style.styleSheet.cssText = css; } document.getElementsByTagName('head')[0].appendChild(style); } function randomColor(){ return "rgb("+(~~(Math.random()*255))+","+(~~(Math.random()*255))+","+(~~(Math.random()*255))+")"; } })(window,document);