js generates a random number and display inside the loop

// generates a random number 
randomNumBoth (Min, Max) {
         var the Range = Max - Min
         var Rand = Math.random ()
         var NUM = Min + Math.round (Rand the Range *) // rounded 
       return NUM 
}

　　

let that = this;
let datas = [];
for (let i = 0; i < that.merchantList.length; i++) {
let datai = that.randomNumBoth(99,96)
datas.push(datai)
}
console.log(datas)
that.dataArr = datas

<View class = "add"> {{dataArr [index]}}% of people are concerned </ view>