数组对象的属性值大小写转换

// 处理大小写问题
var objClone=[
    {NAME:'张三',AGE:'18'},
    {NAME:'李四',AGE:'19'},
    {NAME:'王五',AGE:'20'},
]
for (var i = 0; i < objClone.length; i++) {
    for (var key in objClone[i]) {
        const reg = /^[a-z]+$/;
        if (!reg.test(key)) {
            var lowerkey = key.toLowerCase();
            objClone[i][lowerkey] = objClone[i][key];
            delete objClone[i][key];
        }
    }
}
console.log(objClone)
/*objClone=[
    {name:'张三',age:'18'},
    {name:'李四',age:'19'},
    {name:'王五',age:'20'},
]*/