页面自适应浏览器宽高

<script>
        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("map").style.height = winHeight + "px";

        }
        window.onresize = autodivheight; //浏览器窗口发生变化时同时变化DIV高度
    </script>