将随机对象推入数组

Question

我需要在数组上随机放置对象以进行“战斗”。 随机效果完美，但有时会重复对象。 另外，我可以看到我的var ARR充满了不确定的内容。 我不明白如何在没有重复对象的情况下完美随机化并填充随机对象。

var avenger = [
        {id: 1, fullName: "Steve Rogers", avengerName: "Captain America", gender: "Male", city: "New York City", markAv: 10},
        {id: 2, fullName: "Tony Stark", avengerName: "IronMan", gender: "Male", city: "New York City", markAv: 15},
        {id: 3, fullName: "Thor Odinson", avengerName: "Thor", gender: "Male", city: "Los Angeles", markAv: 13},
        {id: 4, fullName: "Bruce Banner", avengerName: "Hulk", gender: "Male", city: "Maryland", markAv: 20},
        {id: 5, fullName: "Clint Barton", avengerName: "Hawkeye", gender: "Male", city: "Los Angeles", markAv: 8},
        {id: 6, fullName: "Natasha Romanoff", avengerName: "Black Widow", gender: "Female", city: "Paris", markAv: 14},
        {id: 7, fullName: "Nick Fury", avengerName: "Nick Fury", gender: "Female", city: "New York City", markAv: 5},
        {id: 8, fullName: "Jaume Serradell", avengerName: "Jaumeserr", gender: "Male", city: "Barcelona", markAv: 18}
    ]

    function avengerPairs(myObject) {

        var arr = [];

        for (var i=0; i<avenger.length; i++) {

            var randomAvenger = avenger[Math.floor(Math.random() * avenger.length)];

            if (randomAvenger[i] !== avenger[i]) {
                arr.push([randomAvenger, avenger[i+1]]);
                i++;    
            }
        }

        console.log(arr);

        for (var i=0; i<arr.length; i++) {

            console.log(Math.max(arr[i][0].markAv, arr[i][1].markAv));

            if (arr[i][0].markAv < arr[i][1].markAv) {
                console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => " + arr[i][1].fullName + " is better!");
            } else if (arr[i][0].markAv === arr[i][1].markAv) {
                console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => Are equals!");
            } else {
                console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => " + arr[i][0].fullName + " is better!");
            }
        }
    }

avengerPairs(avenger);

Answer 1

由于以下几行，您的数组被undefined填充：

var arr = [];

for (var i=0; i<avenger.length; i++) {

    var random = avenger[Math.floor(Math.random() * avenger.length)];

    console.log(random);
    arr.push([random[i], random[i+1]]);
    i++;
}

random成功创建了一个随机索引以查看avenger数组，并将数组中的相应值分配给变量random 。

您应该在以下console.log成功看到它。

这是给您带来麻烦的下一行。 在推入调用中，您尝试使用random[i]和random[i + 1]访问random变量上的两个索引。 这将返回undefined，因为您的random变量不是复仇者数组而是一个复仇者 ，并且该对象上不存在整数键，因此返回undefined 。

我会为您的random变量推荐一个更好的名称。 也许randomAvenger ？ 这将有助于弄清楚您是错误地索引了一个复仇者，而不是复仇者数组。

为了成功地将两个复仇者配对，您将需要两个单独的随机索引到avengers数组中。 您还需要提防两次选择相同的复仇者！

Answer 2

所以我认为问题出在arr.push([random[i], random[i+1]]) 。

如果查看console.log(random)输出，您将意识到random代表单个复仇者的对象（即{ id: 4, fullName: 'Bruce Banner', avengerName: 'Hulk', gender: 'Male', city: 'Maryland',markAv: 20 } ）。

这意味着random[i]和random[i+1]都未定义。

我的建议是做arr.push([random, avenger[i+1]]); 。

您还可以使用Array.prototype.splice在配对每个复仇者时将其删除，因此没有重复项。

好的，几个小时后，我继续进行拼接处理（没有重复）。 如果您想继续，我留下了一堆注释掉的console.log语句。

 var avenger = [ {id: 1, fullName: "Steve Rogers", avengerName: "Captain America", gender: "Male", city: "New York City", markAv: 10}, {id: 2, fullName: "Tony Stark", avengerName: "IronMan", gender: "Male", city: "New York City", markAv: 15}, {id: 3, fullName: "Thor Odinson", avengerName: "Thor", gender: "Male", city: "Los Angeles", markAv: 13}, {id: 4, fullName: "Bruce Banner", avengerName: "Hulk", gender: "Male", city: "Maryland", markAv: 20}, {id: 5, fullName: "Clint Barton", avengerName: "Hawkeye", gender: "Male", city: "Los Angeles", markAv: 8}, {id: 6, fullName: "Natasha Romanoff", avengerName: "Black Widow", gender: "Female", city: "Paris", markAv: 14}, {id: 7, fullName: "Nick Fury", avengerName: "Nick Fury", gender: "Female", city: "New York City", markAv: 5}, {id: 8, fullName: "Jaume Serradell", avengerName: "Jaumeserr", gender: "Male", city: "Barcelona", markAv: 18} ] function avengerPairs(myObject) { var arr = []; var lengthSave = avenger.length for (var i=0; i<lengthSave; i++) { var newLength = avenger.length var index = Math.floor(Math.random() * newLength) var randomAvenger = avenger[index]; var pairArr = (avenger.splice(index, 2)) // console.log(avenger.length) // console.log(pairArr.length) if (pairArr.length < 2 ) { var anotherPair if (avenger.length > 1) { anotherPair = avenger.splice(index, 1)[0] } else if (avenger.length === 1) { anotherPair = avenger.splice(0, 1)[0] } // console.log(!!anotherPair) // console.log(anotherPair) // console.log('another pair') if (!!anotherPair === true) { pairArr.push(anotherPair) } } // console.log(pairArr) // console.log(!!pairArr[0]) // console.log(!!pairArr[1]) // console.log('pairArr') if (!!pairArr[0] === true && !!pairArr[1]) { arr.push(pairArr) } } // console.log(arr); for (var i=0; i<arr.length; i++) { // console.log(Math.max(arr[i][0].markAv, arr[i][1].markAv)); if (arr[i][0].markAv < arr[i][1].markAv) { console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => " + arr[i][1].fullName + " is better!"); } else if (arr[i][0].markAv === arr[i][1].markAv) { console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => Are equals!"); } else { console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => " + arr[i][0].fullName + " is better!"); } } } avengerPairs(avenger); 

Answer 3

随机工作完美，但我不能使用randomAvenger进行随机复仇者以防止重复值。 现在，在数组[a，b] [a，b]中对象的两个值之间是完美的，但是在对象的值之间继续重复值。

那是我的代码新代码：

var avenger = [
        {id: 1, fullName: "Steve Rogers", avengerName: "Captain America", gender: "Male", city: "New York City", markAv: 10},
        {id: 2, fullName: "Tony Stark", avengerName: "IronMan", gender: "Male", city: "New York City", markAv: 15},
        {id: 3, fullName: "Thor Odinson", avengerName: "Thor", gender: "Male", city: "Los Angeles", markAv: 13},
        {id: 4, fullName: "Bruce Banner", avengerName: "Hulk", gender: "Male", city: "Maryland", markAv: 20},
        {id: 5, fullName: "Clint Barton", avengerName: "Hawkeye", gender: "Male", city: "Los Angeles", markAv: 8},
        {id: 6, fullName: "Natasha Romanoff", avengerName: "Black Widow", gender: "Female", city: "Paris", markAv: 14},
        {id: 7, fullName: "Nick Fury", avengerName: "Nick Fury", gender: "Female", city: "New York City", markAv: 5},
        {id: 8, fullName: "Jaume Serradell", avengerName: "Jaumeserr", gender: "Male", city: "Barcelona", markAv: 18}
    ]

    function avengerPairs(myObject) {

        var arr = [];

        for (var i=0; i<avenger.length; i++) {

            var randomAvenger = avenger[Math.floor(Math.random() * avenger.length)];


            if (randomAvenger !== avenger[i]) {
                arr.push([randomAvenger, avenger[i+1]]);
                i++;    
            } else {
                console.log("Not equals");
            }   
        }

        console.log(arr);

        /*
        for (var i=0; i<arr.length; i++) {

            console.log(Math.max(arr[i][0].markAv, arr[i][1].markAv));

            if (arr[i][0].markAv < arr[i][1].markAv) {
                console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => " + arr[i][1].fullName + " is better!");
            } else if (arr[i][0].markAv === arr[i][1].markAv) {
                console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => Are equals!");
            } else {
                console.log(arr[i][0].fullName + " vs " + arr[i][1].fullName + " => " + arr[i][0].fullName + " is better!");
            }
        }
        */
    }

avengerPairs(avenger);