javascript - 使用 for 循环遍历数组和 console.log 中的对象,如果电影已经看过或没有
问题描述
我是学习编码的新手。使用 for 循环和 forEach 有点困难。我的代码由于某种原因无法正常工作,我不知道错误是什么。有人看到我需要修复的任何东西吗?
var myMovies = [
{name: "Gladiator",
rating: 5,
seen: true
},
{name: "Vanilla Sky",
rating: 4.5,
seen: true
},
{name: "Beautiful Mind",
rating: 5,
seen:true
},
{name: "The Happytime Murders",
rating: 3.5,
seen: false
}
];
var movies = myMovies;
for(i = 0; i < 3; i ++)
if(movies.seen){
console.log("You have seen " + movies.name + "-" + movies.rating);
}else
console.log("You haven't seen " + movies.name + "-" + movies.rating);
解决方案
var myMovies = [
{name: "Gladiator",
rating: 5,
seen: true
},
{name: "Vanilla Sky",
rating: 4.5,
seen: true
},
{name: "Beautiful Mind",
rating: 5,
seen:true
},
{name: "The Happytime Murders",
rating: 3.5,
seen: false
}
];
var movies = myMovies;
for(i = 0; i < 4; i ++)
if(movies[i].seen){
console.log("You have seen " + movies[i].name + "-" + movies[i].rating);
}else
console.log("You haven't seen " + movies[i].name + "-" + movies[i].rating);
或者是这样吗?我认为你正在混合 for 和 foreach
var myMovies = [
{name: "Gladiator",
rating: 5,
seen: true
},
{name: "Vanilla Sky",
rating: 4.5,
seen: true
},
{name: "Beautiful Mind",
rating: 5,
seen:true
},
{name: "The Happytime Murders",
rating: 3.5,
seen: false
}
];
myMovies.forEach(movies=>{
if(movies.seen){
console.log("You have seen " + movies.name + "-" + movies.rating);
}else
console.log("You haven't seen " + movies.name + "-" + movies.rating);
})
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