大佬幫忙看一下邏輯的問題

var a = [
                {
                    name: 'a',
                    child: [{
                            name: 'bb',
                            limit: 12
                        },
                        {
                            name: 'ss',
                            limit: 12
                        }
                    ]
                }, 
                {
                    name: 'b',
                    child: [{
                            name: 'ss',
                            limit: 12
                        },
                        {
                            name: 'kk',
                            limit: 12
                        }
                    ]
                }, 
                {
                    name: 'c',
                    child: [{
                            name: 'aa',
                            limit: 12
                        },
                        {
                            name: 'mm',
                            limit: 12
                        }
                    ]
                }, 
                {
                    name: 'd',
                    child: [{
                            name: 'aa',
                            limit: 12
                        },
                        {
                            name: 'mm',
                            limit: 12
                        }
                    ]
                }
            ];
            var b = [
                {
                    name: 'b',
                    child: [{
                        name: 'ss'
                    },{
                        name:'kk'
                    }]
                }, 
                {
                    name: 'a',
                    child: [{
                        name: 'ss'
                    }]
                }
            ];
            var c = [];
            a.forEach(function(e) {
                b.forEach(function(i) {
                    if(e.name == i.name) {
                        e.child.forEach(function(j, index1) {
                            i.child.forEach(function(k, index2) {
                                if(j.name !== k.name) {
                                    e.child.splice(index1,1);
                                    console.log(e.child)
                                }
                            })
                        })
                        c.push(e);
                    };
                })
        });
            console.log(c)

我想要找出a里面所有和b name相同的，為什么我找出來是這樣的