数组去重

javascript

浏览数:383

2019-1-8

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <script>
            Array.prototype.unique3 = function(){
                var res = [];
                var json = {};
                for(var i = 0; i < this.length; i++){
                    var objKey = JSON.stringify(this[i]);//把数组值序列化,不然会出bug
                    if(!json[objKey]){
                        res.push(this[i]);
                        json[objKey] = 1;
                    }
                }
                console.log(json);
                return res;
            }
            
            var arr = [{id:1},{name:'das'},{id:2},{name:0},{id:2},"dsda",{name:'das'}];
            console.log(arr.unique3());
            
            var arrNew = [
                {
                    id:1,
                    name:'aa'
                },
                {
                    id:1,
                    name:'aa',
                },
                {
                    id:2,
                    name:'bb'
                },
                {
                    id:2,
                    name:{
                        n:"1"
                    }
                },
                {
                    id:2,
                    name:{
                        n:"1"
                    }
                },
                {
                    id:2,
                    name:{
                        n:"2"
                    }
                },
                {
                    id:1,
                    name:'aa'
                },
                {
                    id:1
                },
                {
                    id:2
                },
                {
                    id:2
                },
                1,
                1,
                [1,2],
                [1,2],
                [1,2,]
            ]
            console.log(arrNew.unique3());
            
            var arr_1 = [
                {
                    id:1,
                    name:[1,2]
                },
                {
                    id:1,
                    name:[1,2]
                },
                {
                    id:1,
                    name:[1,]
                },
                {
                    id:1,
                    name:[1]
                },
            ]
            console.log(arr_1.unique3());
        </script>
    </body>
</html>