+function(){
    adaptUILayout()
    function adaptUILayout(){

        var deviceWidth,
            devicePixelRatio,
            targetDensitydpi,
            //meta,
            initialContent,
            head,
            viewport,
            ua;

        ua = navigator.userAgent.toLowerCase();
        //whether it is the iPhone or iPad
        isiOS = ua.indexOf('ipad') > -1 || ua.indexOf('iphone') > -1;

        //鑾峰彇璁懼淇℃伅,騫剁煫姝ｅ弬鏁板€�
        devicePixelRatio = window.devicePixelRatio;
        devicePixelRatio < 1.5 ? 2  : devicePixelRatio;

        if(window.orientation == 0 || window.orientation == 180){//絝栧睆鐘舵€�
            if(window.screen.width < window.screen.height){
                deviceWidth = window.screen.width; 
            }else{
                deviceWidth = window.screen.height; 
            }
        }else{//妯睆鐘舵€� //window.orientation==90||window.orientation==-90
            if(window.screen.width > window.screen.height){
                deviceWidth = window.screen.width; 
            }else{
                deviceWidth = window.screen.height; 
            }
        }

        if(devicePixelRatio==2 && (deviceWidth==320 || deviceWidth==360 || deviceWidth==592 || deviceWidth==640)){
            deviceWidth*=2;
        }

        if(devicePixelRatio==1.5 && (deviceWidth==320)){
            deviceWidth*=2;
            devicePixelRatio = 2;
        }
        if(devicePixelRatio==1.5 && (deviceWidth==640)){
            devicePixelRatio = 2;
        }

        //鑾峰彇鏈€緇坉pi
        targetDensitydpi = 640 / deviceWidth * devicePixelRatio * 160;
        initialContent   = isiOS 
            ? 'width=' + 640 + 'px, user-scalable=no, minimal-ui'
            : 'target-densitydpi=' + targetDensitydpi + ', width='+ 640 +', user-scalable=no, minimal-ui';

        $("#viewport").remove();
        var head = document.getElementsByTagName('head');
        var viewport = document.createElement('meta');
        viewport.name = 'viewport';
        viewport.id = 'viewport';
        viewport.content = initialContent;

        head.length > 0 && head[head.length - 1].appendChild(viewport);
    }

    $(window).bind( 'orientationchange', function(e){
        adaptUILayout()
    });

}();





 

移動端的自適應有js控制，百分比，flex佈局  今天分享一個js控制自適應， 引用就行  移動端的width是640px，如果是其他的width  可以自己修改一下。

參考：http://vr013.com/