// 版本号 对比
const edition = (curV, reqV)=>{
// 当前版本号：curV；比较版本号：reqV
if (curV && reqV) {
//将两个版本号拆成数字
var arr1 = curV.split('.'),
arr2 = reqV.split('.');
var minLength = Math.min(arr1.length, arr2.length),
position = 0,
diff = 0;
//依次比较版本号每一位大小，当对比得出结果后跳出循环（后文有简单介绍）
while (position < minLength && ((diff = parseInt(arr1[position]) - parseInt(arr2[position])) == 0)) {
position++;
}
diff = (diff != 0) ? diff : (arr1.length - arr2.length);
//若curV大于reqV，则返回true
return diff > 0;
} else {
//输入为空
console.log("版本号不能为空");
return false;
}
}