问在JavaScript中使用for循环创建对象数组
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Stack Overflow用户

提问于 2018-08-25 01:09:34

回答 2查看 138关注 0票数 0

我想使用另一个数组中的值通过 for 循环创建一个对象数组。

下面的代码片段生成5值，而不是6 (根据需要)

function generateArray() {
    var names = ["Fariz", "Falisha", "Mami", "Defina", "Fiska", "Papi"];
    var newObj = [];

    for (i = 0; i < names.length - 1; i++) {
        newObj[i] = {
            name: names[(Math.floor(Math.random() * (names.length)))],
            age: Math.floor(Math.random() * 40),
            communication: Math.floor(Math.random() * 20),
            skill: Math.floor(Math.random() * 20),
            experience: Math.floor(Math.random() * 20)
        }
    }

    return newObj;
}

console.log(generateArray());

如何生成与names 数组中的值一样多的值?

javascript

arrays

object

for-loop

回答 2

Stack Overflow用户

回答已采纳

发布于 2018-08-25 01:44:44

解决方案-将i < names.length - 1替换为i < names.length

在for循环中执行代码块的条件错误。你的代码运行得很好，只是生成的结果比需要的少了1个。

MDN web docs介绍了for的工作原理。

function generateArray() {
    names = ["Fariz", "Falisha", "Mami", "Defina", "Fiska", "Papi"];
    newObj = [];

    for (i = 0; i < names.length; i++) {
        newObj[i] = {
            name: names[(Math.floor(Math.random() * (names.length)))],
            age: Math.floor(Math.random() * 40),
            communication: Math.floor(Math.random() * 20),
            skill: Math.floor(Math.random() * 20),
            experience: Math.floor(Math.random() * 20)
        }
    }

    return newObj;
}

console.log(generateArray());

票数 2

Stack Overflow用户

发布于 2018-08-25 01:26:37

names = ["Fariz", "Falisha", "Mami", "Defina", "Fiska", "Papi"];

arob = [
    {
        name: names[(Math.floor(Math.random() * (names.length)))],
        age: Math.floor(Math.random() * 40),
        communication: Math.floor(Math.random() * 20),
        skill: Math.floor(Math.random() * 20),
        experience: Math.floor(Math.random() * 20)
    }, 
    {
        name: names[(Math.floor(Math.random() * (names.length)))],
        age: Math.floor(Math.random() * 40),
        communication: Math.floor(Math.random() * 20),
        skill: Math.floor(Math.random() * 20),
        experience: Math.floor(Math.random() * 20)
    }, 
    {
        name: names[(Math.floor(Math.random() * (names.length)))],
        age: Math.floor(Math.random() * 40),
        communication: Math.floor(Math.random() * 20),
        skill: Math.floor(Math.random() * 20),
        experience: Math.floor(Math.random() * 20)
    }, 
    {
        name: names[(Math.floor(Math.random() * (names.length)))],
        age: Math.floor(Math.random() * 40),
        communication: Math.floor(Math.random() * 20),
        skill: Math.floor(Math.random() * 20),
        experience: Math.floor(Math.random() * 20)
    }, 
    {
        name: names[(Math.floor(Math.random() * (names.length)))],
        age: Math.floor(Math.random() * 40),
        communication: Math.floor(Math.random() * 20),
        skill: Math.floor(Math.random() * 20),
        experience: Math.floor(Math.random() * 20)
    }, 
    {
        name: names[(Math.floor(Math.random() * (names.length)))],
        age: Math.floor(Math.random() * 40),
        communication: Math.floor(Math.random() * 20),
        skill: Math.floor(Math.random() * 20),
        experience: Math.floor(Math.random() * 20)
    }
];

在for循环中：i < names.length;，而不是i < names.length - 1;

function generateArray() {
    names = ["Fariz", "Falisha", "Mami", "Defina", "Fiska", "Papi"];
    newObj = [];

    for(i=0; i < names.length; i++) {
    newObj[i] = {
        name: names[(Math.floor(Math.random() * (names.length)))],
        age: Math.floor(Math.random() * 40),
        communication: Math.floor(Math.random() * 20),
        skill: Math.floor(Math.random() * 20),
        experience: Math.floor(Math.random() * 20) }
    }

    return newObj;
}