js数组的处理使用

var users = [
        {name: "张含韵", "email": "zhang@email.com"},
        {name: "江一燕",   "email": "jiang@email.com"},
        {name: "李小璐",  "email": "li@email.com"}
    ];        
    var newArr = users.filter(val=>{
        return val.name == '江一燕';
    })
    var newEE = users.map(item => {
        return item.email
    })
    console.log(newArr[0].email)
    console.log(newEE.join(','))
    var arr = [1,87,54,2,5,5,4,1,1];
    var newR = Array.from(new Set(arr));
    console.log(newR);