頁面自适應浏覽器寬高

<script>
        autodivheight();

        function autodivheight() { //函數：擷取尺寸
            //擷取浏覽器視窗高度
            var winHeight = 0;
            if (window.innerHeight)
                winHeight = window.innerHeight;
            else if ((document.body) && (document.body.clientHeight))
                winHeight = document.body.clientHeight;
            //通過深入Document内部對body進行檢測，擷取浏覽器視窗高度
            if (document.documentElement && document.documentElement.clientHeight)
                winHeight = document.documentElement.clientHeight;
            //DIV高度為浏覽器視窗的高度
            document.getElementById("map").style.height = winHeight + "px";

        }
        window.onresize = autodivheight; //浏覽器視窗發生變化時同時變化DIV高度
    </script>