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day1018-obj-to-arr.html
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<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>作业 - 数据处理题目</title>
</head>
<body>
<script>
/*
将下面这个对象转为数组 并实现 一个排序方法 一个筛选方法
*/
/*
例子 :
formattingSort('height'); 调用 formattingSort 传参 'height' 就以height属性值为排序属性 升序排序
[{
name: 'Dan',
age: 1,
sex: 1,
weight: '79kg',
height: '110cm'
},
{
name: 'meney',
age: 4,
sex: 1,
weight: '69kg',
height: '160cm'
},
{
name: 'joker',
age: 1,
sex: 0,
weight: '99kg',
height: '190cm'
},
{
name: 'jojo',
age: 18,
sex: 1,
weight: '90kg',
height: '195cm'
},
{
name: 'stack',
age: 99,
sex: 1,
weight: '199kg',
height: '1190cm'
}]
formattingFilter('age',function(item){
return item > 10;
});
调用 formattingFilter 传参 'age' 和回调函数
以age属性为过滤条件 条件为 function回调函数的return公式
[{
name: 'jojo',
age: 18,
sex: 1,
weight: '90kg',
height: '195cm'
},
{
name: 'stack',
age: 99,
sex: 1,
weight: '199kg',
height: '1190cm'
}]
*/
var oData = {
'joker': {
age: 1,
sex: 0,
weight: '99kg',
height: '190cm'
},
'meney': {
age: 4,
sex: 1,
weight: '69kg',
height: '160cm'
},
'Dan': {
age: 1,
sex: 1,
weight: '79kg',
height: '110cm'
},
'jojo': {
age: 18,
sex: 0,
weight: '90kg',
height: '195cm'
},
'stack': {
age: 99,
sex: 0,
weight: '199kg',
height: '1190cm'
}
};
function formatting(objects) {
return Object.entries(objects).map(function (kv) {
kv[1].name = kv[0];
return kv[1];
});
}
var arrData = formatting(oData);
console.log(oData, arrData);
function formattingSort(arr, key) {
if (arr.length === 0 || !(key in arr[0])) {
return arr;
}
return arr.sort(function (a, b) {
return a[key] > b[key] ? 1 : -1;
});
}
console.log(formattingSort(arrData.slice(), "age"));
console.log(formattingSort(arrData.slice(), "sex"));
console.log(formattingSort(arrData.slice(), "weight"));
console.log(formattingSort(arrData.slice(), "height"));
console.log(formattingSort(arrData.slice(), "name"));
function formattingFilter(arr, key, filterFn) {
if (arr.length === 0 || !(key in arr[0])) {
return arr;
}
return arr.filter((v) => filterFn(v[key]));
}
console.log(formattingFilter(arrData.slice(), "age", function (age) {
return age > 10;
}));
console.log(formattingFilter(arrData.slice(), "sex", function (sex) {
return sex === 0;
}));
console.log(formattingFilter(arrData.slice(), "weight", function (w) {
return parseInt(w) >= 90;
}));
</script>
</body>
</html>