获取网络类型

// H5 plus事件处理  
function plusReady(){  
    var types = {};   
                types[plus.networkinfo.CONNECTION_UNKNOW]="网络连接状态未知";   
                types[plus.networkinfo.CONNECTION_NONE]="未连接网络";   
                types[plus.networkinfo.CONNECTION_ETHERNET]="有线网络";   
                types[plus.networkinfo.CONNECTION_WIFI]="WIFI";   
                types[plus.networkinfo.CONNECTION_CELL2G]="2G";   
                types[plus.networkinfo.CONNECTION_CELL3G]="3G";   
                types[plus.networkinfo.CONNECTION_CELL4G]="4G";   
                console.log("Network: " + types[plus.networkinfo.getCurrentType()]);  
}  
if(window.plus){  
    plusReady();  
}else{  
    document.addEventListener("plusready",plusReady,false);  
}