js数组中两个数组集合【每个元素都是集合】，取数组1与数组2不同的值
js数组中两个数组集合【每个元素都是集合】，取数组1与数组2不同的值
前提：存在数组A、数组B
1.数组自身去重【A+B的数组集合自身去重】
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<button type="button" onclick="decode()" style="width: 50px;height: 70px;"></button>
<script type="text/javascript">
let arr1 = [{
"code": "0001",
"name": "liting",
"age": 12,
"school": "宁城一中",
}, {
"code": "0002",
"name": "张三",
"age": 13,
"school": "宁城一中",
}, {
"code": "0003",
"name": "晓明",
"age": 14,
"school": "宁城一中",
}, {
"code": "0006",
"name": "花花",
"age": 17,
"school": "济阳一中",
},{
"code": "0007",
"name": "凯凯",
"age": 17,
"school": "济阳一中",
},{
"code": "0008",
"name": "明明",
"age": 17,
"school": "济阳一中",
}]
let arr2 = [{
"code": "0001",
"name": "liting",
"age": 12,
"school": "宁城一中",
}, {
"code": "0002",
"name": "张三",
"age": 13,
"school": "宁城一中",
}, {
"code": "0003",
"name": "晓明",
"age": 14,
"school": "宁城一中",
},
{
"code": "0004",
"name": "芳芳",
"age": 15,
"school": "宁城一中",
},{
"code": "0005",
"name": "红红",
"age": 16,
"school": "宁城一中",
},
]
console.log(arr1, "arr1");
console.log(arr2, "arr2");
// 自身去重
let conArr = arr1.concat(arr2)
function unique(arr) {
let newArr = [arr[0]]
for (let i = 1; i < arr.length; i++) {
let repeat = false;
for (let j = 0; j < newArr.length; j++) {
console.log(arr[i], "arr[i]");
console.log(newArr[j], "newArr[j]")
if (arr[i].code === newArr[j].code) {
repeat = true;
break;
} else {
}
}
if (!repeat) {
newArr.push(arr[i]);
}
}
return newArr;
}
console.log(unique(conArr), "conArr")
</script>
</body>
</html>
2.两个数组去重【A-B】|| 【B-A】
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<button type="button" onclick="decode()" style="width: 50px;height: 70px;"></button>
<script type="text/javascript">
let arr1 = [{
"code": "0001",
"name": "liting",
"age": 12,
"school": "宁城一中",
}, {
"code": "0002",
"name": "张三",
"age": 13,
"school": "宁城一中",
}, {
"code": "0003",
"name": "晓明",
"age": 14,
"school": "宁城一中",
}, {
"code": "0006",
"name": "花花",
"age": 17,
"school": "济阳一中",
},{
"code": "0007",
"name": "凯凯",
"age": 17,
"school": "济阳一中",
},{
"code": "0008",
"name": "明明",
"age": 17,
"school": "济阳一中",
}]
let arr2 = [{
"code": "0001",
"name": "liting",
"age": 12,
"school": "宁城一中",
}, {
"code": "0002",
"name": "张三",
"age": 13,
"school": "宁城一中",
}, {
"code": "0003",
"name": "晓明",
"age": 14,
"school": "宁城一中",
},
{
"code": "0004",
"name": "芳芳",
"age": 15,
"school": "宁城一中",
},{
"code": "0005",
"name": "红红",
"age": 16,
"school": "宁城一中",
},
]
console.log(arr1, "arr1");
console.log(arr2, "arr2");
// 比较arr与arr1的不同【arr有，arr1没有】
let repeat = null
// 两个数组去重
function unique(arr,arr1) {
let newArr = []
for (let i = 0; i < arr.length; i++) {
repeat = false
for (let j = 0; j < arr1.length; j++) {
//比较条件，唯一值相等
if (arr[i].code === arr1[j].code) {
repeat = true;
break;
}
}
if (!repeat) {
newArr.push(arr[i]);
}
}
return newArr;
}
//arr1与arr2【找arr1中存在，arr2中不存在】
let uniArr = unique(arr1,arr2)
console.log(uniArr,"去重")
//arr1与arr2【找arr2中存在，arr1中不存在】
let uniArr1 = unique(arr2,arr1)
console.log(uniArr1,"去重1")
</script>
</body>
</html>