1、jquery方法 <script> var winHeight = $(window).height(); $("#show").css("height",winHeight); $(window).resize(function() { winHeight = $(window).height(); $("#show").css("height",winHeight); });</script> 2、js方法 <div id="test" style=" background: #ccc"></div> <script type="text/javascript">autodivheight();function autodivheight(){ //函数：获取尺寸 //获取浏览器窗口高度 var winHeight=0; if (window.innerHeight){ winHeight = window.innerHeight; } else if ((document.body) && (document.body.clientHeight)){ winHeight = document.body.clientHeight; } //通过深入Document内部对body进行检测，获取浏览器窗口高度 if (document.documentElement && document.documentElement.clientHeight){ winHeight = document.documentElement.clientHeight; } //DIV高度为浏览器窗口的高度 //document.getElementById("test").style.height= winHeight +"px"; //DIV高度为浏览器窗口高度的一半 document.getElementById("test").style.height= winHeight/2 +"px";}window.onresize=autodivheight; //浏览器窗口发生变化时同时变化DIV高度</script>