从内容中的jsons如何能得到result ?

Question

varjsons=[{"a":1,"b":2,"e":3,"d":4,"p":'河北',"c":'石家庄'},{"a":1,"b":2,"e":3,"d":4,"p":'河北',"c":'保定'},{"a":1,"b":2,"e":3,"d":4,"p":'河北',"c":'其他'},{"a":2,"b":3,"e":4,"d":5,"p":'广东',"c":'广州'},{"a":2,"b":3,"e":4,"d":5,"p":'广东',"c":'深圳'},{"a":3,"b":4,"e":5,"d":6,"p":'澳门',"c":'澳门'}];varresult=[[{"a":1,"b":2,"e":3,"d":4,"p":'河北',"c":'石家庄'},{"a":1,"b":2,"e":3,"d":4,"p":'河北',"c":'保定'},{"a":1,"b":2,"e":3,"d":4,"p":'河北',"c":'其他'}],[{"a":2,"b":3,"e":4,"d":5,"p":'广东',"c":'广州'},{"a":2,"b":3,"e":4,"d":5,"p":'广东',"c":'深圳'}],[{"a":3,"b":4,"e":5,"d":6,"p":'澳门',"c":'澳门'}]];

Answer 1

试试下面的代码：
varcities={}
varresult=[];
for(vari=0;ivaritem=jsons[i];
if(!cities[item.p]){
cities[item.p]=[];
result.push(cities[item.p]);
}
cities[item.p].push(item);
}
console.log(result);
                            

Answer 2

这个方法有很多吧。
如果是支持es5的环境下，
Array.prototype.filter、Array.prototype.reduce都能帮你实根据属性特定值筛选对象。