ES6 Array methods (and some Every)

Determine whether an array of objects for each adult, more than 17 adults, or minors

        var arr = [
            {name:'jerry',sex:'man',age:14},
            {name:'jack',sex:'woman',age:19},
            {name:'bill',sex:'man',age:18}
        ]
        var every = arr.every(function(obj){  //every  一假即假
            return obj.age > 17   
        })
        var some = arr.some(function(obj){   // some  一真即真
            return obj.age >17
        })
        console.log(every,some)  //false  true

Scenario: register or login pages filled determine whether the content is empty