移动端游览器自适应代码

移动端游览器自适应调整

<script type="text/javascript">// <![CDATA[
var jsVer = 28;

        var phoneWidth = parseInt(window.screen.width);

        var phoneScale = phoneWidth / 640;

        var ua = navigator.userAgent;

        if (/Android (d+.d+)/.test(ua)) {

            var version = parseFloat(RegExp.$1);

            // andriod 2.3

            if (version > 2.3) {

                document.write('<meta name="viewport" content="width=640, minimum-scale = ' + phoneScale + ', maximum-scale = ' + phoneScale + ', target-densitydpi=device-dpi">');

                // andriod 2.3以上

            } else {

                document.write('<meta name="viewport" content="width=640, target-densitydpi=device-dpi">');

            }

            // 其他系统

        } else {

            document.write('<meta name="viewport" content="width=640, user-scalable=no, target-densitydpi=device-dpi">');

        }
// ]]></script>