有选择地随机化javascript对象数组
我在下面发布了javascript对象数组,我需要有选择地随机选择。也就是说,我需要将数组划分为块,使用shuffle函数随机分配每个块,然后连接所有的卡盘以重建数组。在函数中有什么方法可以做到这一点吗 块由以下字段的组合定义:有选择地随机化javascript对象数组,javascript,arrays,parsing,javascript-objects,shuffle,Javascript,Arrays,Parsing,Javascript Objects,Shuffle,我在下面发布了javascript对象数组,我需要有选择地随机选择。也就是说,我需要将数组划分为块,使用shuffle函数随机分配每个块,然后连接所有的卡盘以重建数组。在函数中有什么方法可以做到这一点吗 块由以下字段的组合定义: “火车” “语法” “testSeq” 5种可能的组合是: “train”:true&&“grammar”:“A”&&&“testSeq”:1 “train”:null&&“grammar”:“A”&&&“testSeq”:1 “train”:true和“gram
- “火车”
- “语法”
- “testSeq”
- “train”:true&&“grammar”:“A”&&&“testSeq”:1
- “train”:null&&“grammar”:“A”&&&“testSeq”:1
- “train”:true和“grammar”:“B”和“testSeq”:1
- “train”:null&&“grammar”:“B”&&&“testSeq”:1
- “train”:true&&“grammar”:“A”&&&“testSeq”:2
function shuffle(array) {
var currentIndex = array.length, temporaryValue, randomIndex ;
// While there remain elements to shuffle...
while (0 !== currentIndex) {
// Pick a remaining element...
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex -= 1;
// And swap it with the current element.
temporaryValue = array[currentIndex];
array[currentIndex] = array[randomIndex];
array[randomIndex] = temporaryValue;
}
return array;
}
var myArray = [
{
"trial" : {
"index": 0,
"word": "WORD 1",
"keyboard": true,
"train": true,
"test": null,
"grammatical": true,
"grammar" : "A",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 2",
"keyboard": true,
"train": true,
"test": false,
"grammatical": true,
"grammar" : "A",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 3",
"keyboard": true,
"train": false,
"test": true,
"grammatical": true,
"grammar" : "A",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
},
"trial" : {
"index": 0,
"word": "WORD 1",
"keyboard": true,
"train": true,
"test": null,
"grammatical": true,
"grammar" : "B",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 2",
"keyboard": true,
"train": true,
"test": false,
"grammatical": true,
"grammar" : "B",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 3",
"keyboard": true,
"train": false,
"test": true,
"grammatical": true,
"grammar" : "B",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 3",
"keyboard": true,
"train": false,
"test": true,
"grammatical": true,
"grammar" : "B",
"testSeq" : 2
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
}
];
console.log(shuffle(myArray));
非常感谢。这将创建5个不同的阵列,但可以完成任务,代码:
function shuffle(array) {
var temp = {
arr1: [],
arr2: [],
arr3: [],
arr4: [],
arr5: []
};
for (var i=0; i<array.length; i++) {
var cur = array[i].trial;
if(cur.train && cur.grammar == "A" && cur.testSeq == 1) temp.arr1.push(array[i]);
else if(!cur.train && cur.grammar == "A" && cur.testSeq == 1) temp.arr2.push(array[i]);
else if(cur.train && cur.grammar == "B" && cur.testSeq == 1) temp.arr3.push(array[i]);
else if(!cur.train && cur.grammar == "B" && cur.testSeq == 1) temp.arr4.push(array[i]);
else if(cur.train && cur.grammar == "A" && cur.testSeq == 2) temp.arr5.push(array[i]);
}
for(var j=0; j<temp.length; j++)
{
var curArr = temp[i];
var currentIndex = curArr.length, temporaryValue, randomIndex ;
// While there remain elements to shuffle...
while (0 !== currentIndex) {
// Pick a remaining element...
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex -= 1;
// And swap it with the current element.
temporaryValue = curArr[currentIndex];
curArr[currentIndex] = curArr[randomIndex];
curArr[randomIndex] = temporaryValue;
}
}
return temp.arr1.concat(temp.arr2, temp.arr3, temp.arr4, temp.arr5);
}
var myArray = [
{
"trial" : {
"index": 0,
"word": "WORD 1",
"keyboard": true,
"train": true,
"test": null,
"grammatical": true,
"grammar" : "A",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 2",
"keyboard": true,
"train": true,
"test": false,
"grammatical": true,
"grammar" : "A",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 3",
"keyboard": true,
"train": false,
"test": true,
"grammatical": true,
"grammar" : "A",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
},
"trial" : {
"index": 0,
"word": "WORD 1",
"keyboard": true,
"train": true,
"test": null,
"grammatical": true,
"grammar" : "B",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 2",
"keyboard": true,
"train": true,
"test": false,
"grammatical": true,
"grammar" : "B",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 3",
"keyboard": true,
"train": false,
"test": true,
"grammatical": true,
"grammar" : "B",
"testSeq" : 1
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
},
{
"trial" : {
"index": 1,
"word": "WORD 3",
"keyboard": true,
"train": false,
"test": true,
"grammatical": true,
"grammar" : "B",
"testSeq" : 2
},
"metadata" : {
"instructions" : "Type in the word shown as quickly as possible",
"submitUrl" : "/server/trialSubmit"
}
}
];
console.debug(shuffle(myArray));
函数洗牌(数组){
变量温度={
arr1:[],
arr2:[],
arr3:[],
arr4:[],
arr5:[]
};
对于(var i=0;我想你已经很好地掌握了需要发生什么。你的问题是什么?用5个空数组创建一个函数,在原始数组中循环,检查要求,然后添加到正确的临时数组中,然后洗牌5个数组,最后合并them@Halcyon基本上,如果有一种方法可以从t他按照上述规则排列5个区块,然后分别随机化每个区块(即5个不同的随机序列)最后将所有随机的卡盘连接起来,以重建一个与原始阵列大小相同的阵列。@MaartenPeels是的,但有没有办法避免创建5个不同的阵列并在运行中对其进行点阵?@Dede uhm,我认为这是可以做到的,但我认为分配会更难