option = {

    tooltip : {

        formatter: "{a} <br/>{b} : {c}%"

    },

    toolbox: {

        show : true,

        feature : {

            mark : {show: true},

            restore : {show: true},

            saveAsImage : {show: true}

        }

    },

    series : [

        {

            name:'业务指标',

            type:'gauge',

            detail : {formatter:'{value}%'},

            data:[{value: 50, name: '完成率'}]

        }

    ]

};

​

clearInterval(timeTicket);

timeTicket = setInterval(function (){

    option.series[0].data[0].value = (Math.random()*100).toFixed(2) - 0;

    myChart.setOption(option, true);

},2000);