复习

var str = "剧情,犯罪,月黑风高"
/*
var arr = [
{name:"剧情"}
...
]
*/
var arr = []
var test = str.split(",")
for(var i=0;i<test.length;i++){
        var name = test[i]
        var obj = {
                name
        } 
        arr.push(obj)
}
console.log(arr);

var obj = {
    top250:["你好666","他的666"],
    comingSoon:["防抖111","节流111"],
    theaters:["放大镜222","防静电222"]
}
/*
var arr = [
{name:"你好"}
]
*/
var arr = []
for(let v in obj){
    arr.push(...obj[v])
}
var res = arr.map(item=>{
    item = item.replace(/\d/g,"")
    return {item}
})
console.log(res);

var str = `<span>9.7<span><span>-248人评价</span><br>
    <span>9.5<span><span>-48人评价</span><br>
    <span>9.6<span><span>-508人评价</span>`
var arr = str.split("<br>")
var res = arr.map(item=>{
        return item.replace(/<[^<>]+>/g,"").trim()
})
var test = []
var list = []
res.forEach(item=>{
        test.push(item.split("-"))
})
test.forEach(item=>{
    var star = item[0]
    var rating = item[1].replace(/[^\d]/g,"")
    list.push({star,rating})
})
console.log(list);

// Object.keys()可以获取对象所有的属性
// Object.values()可以获取对象所有属性的值
var obj = {
    name:"李四",
    age:39
}
var keys = Object.keys(obj)
var values = Object.values(obj)
console.log(keys);
console.log(values);

var last = `
            [
                {"name":"李四666","data":[2019,10,11]},
                {"name":"张三666","data":[2017,10,11]},
                {"name":"王五666","data":[2018,10,11]}
            ]
        `
        /*
        var arr = [
            {name:"李四...",data:"2019-10-11"}
            ...
        ]
        */
       var test = JSON.parse(last)
       var arr = []
       test.forEach(item=>{
           var {name,data} = item
           name = name.replace(/\d/g,"")+"..."
           data = data.join("-")
           arr.push({name,data})
       })
       console.log(arr);

var arr = [
            {name:"lisi"},
            {name:"html"},
            {name:"css"},
            {name:"vue"},
            {name:"vue"},
            {name:"html"},
        ]
        /*
        ["lisi","html","css","vue"]
        */
        var list = []
        arr.forEach(item=>{
            var {name} = item
            if(!list.includes(name)){
                list.push(name)
            }
        })
        console.log(list);

var arr = {
            A:[{city:"武汉"},{city:"广州"}],
            B:[{city:"深圳"},{city:"广州"}],
            C:[{city:"上海"},{city:"武汉"}],
        }
        /*
        ["武汉","广州","深圳","上海"]
        */
        var {A,B,C} = arr
        var list = [...A,...B,...C]
        var test = []
        list.forEach(item=>{
            var {city} = item
            if(!test.includes(city)){
                test.push(city)
            }
        })
        console.log(test);