对数组（包括json数组）中相邻元素查重，并记录每个元素的重复个数-蒲公英云

对数组（包括json数组）中相邻元素查重，并记录每个元素的重复个数

冷不防 2022-05-11 05:10 233阅读 0赞

先看效果：

70 1

代码如下：

//定义
        function getMergeArr(oldArr,jsonName){
            console.log('哈哈',oldArr[0][jsonName])
            var newItem = [];
            var j=0;
            var count = 1;
            for(var i=0;i<oldArr.length;i++){
                if(jsonName){
                    // json数组
                    if(!oldArr[i+1]){
                        console.log('最后的i',i)
                        oldArr[i].count = count;
                        count = 1;
                        newItem[j] = oldArr[i];
                        j++;
                    }else{
                        console.log(oldArr[0][jsonName])
                        if(oldArr[i][jsonName] != oldArr[i+1][jsonName]){
                            console.log(i,i+1)
                            oldArr[i].count = count;
                            count = 1;
                            newItem[j] = oldArr[i];
                            j++;
                        }else{
                            count++;
                            if( i == oldArr.length-1){
                                console.log('最后的相同的i',i)
                                // 如果是最后相同的
                                console.log('值',count)
                                oldArr[i].count = count;
                                newItem[j] = oldArr[i];
                                j++;
                            }
                        }
                    }
                }else{
                    // 数组
                    if(oldArr[i] != oldArr[i+1]){
                        oldArr[i]= oldArr[i]+'X'+count;
                        count = 1;
                        newItem[j] = oldArr[i];
                        j++;
                    }else{
                        count++;
                        if( i == oldArr.length-1){
                            // 如果是最后相同的
                            console.log('值',count)
                            oldArr[i]= oldArr[i]+'X'+count;
                            newItem[j] = oldArr[i];
                            j++;
                        }
                    }
                }
            }            
            return newItem;
        }
        //使用
        var oldArr = ['旅行箱', '旅行箱', '小米', '大大米','黑米','黑米','黑米','黑米','小米','heimi','小米','小米','小米','小米','米'];
        var oldJsonArr = [{name:'启动',duration:'60'},{name:'游戏',duration:'180'},{name:'游戏',duration:'180'},{name:'over',duration:'60'},{name:'over',duration:'60'}]
        console.log('test1',getMergeArr(oldArr))
        console.log('test2',getMergeArr(oldJsonArr,'name'))