我是JSON的新手,并且有一个Java servlet,它提供以下JSON输出:
{
"35808": "Huntsville, Alabama",
"94203": "Sacramento, California",
"33054": "Miami, Florida",
"32801": "Orlando, Florida",
"30301": "Atlanta, Georgia",
"78717": "Austin, Texas"
}
通过Javascript检索JSON后我想创建一个按州分组的嵌套JSON,结果应为:
{
"A": {
"35808": "Huntsville, Alabama"
},
"C": {
"94203": "Sacramento, California"
},
"F": {
"33054": "Miami, Florida",
"32801": "Orlando, Florida"
},
"G": {
"30301": "Atlanta, Georgia"
},
"T": {
"78717": "Austin, Texas"
}
}
使用Javascript最好的方法是什么?或者如果使用Java,最好的方法是什么?
谢谢, 杰
答案 0 :(得分:0)
这应该这样做:
var parsedJSON = …;
var byState = {};
for (var prop in parsedJSON) {
var address = parsedJSON[prop];
var state = address.split(",")[1] || "";
var stateKey = state.charAt(0);
if (! (stateKey in byState))
byState[stateKey] = {};
byState[stateKey][prop] = address;
}
console.log(JSON.stringify(byState, null, 4));
答案 1 :(得分:0)
这假设状态已排序。 http://jsfiddle.net/N23SL/
var originalJson = {
"35808": "Huntsville, Alabama",
"94203": "Sacramento, California",
"33054": "Miami, Florida",
"32801": "Orlando, Florida",
"30301": "Atlanta, Georgia",
"78717": "Austin, Texas"
}
var groupMe = function(originalJson)
{
var grouped = {};
// loop over each property
for(var key in originalJson)
{
var value = originalJson[key];
var state=value.split(", ")[1];
var stateLetter = state[0];
var letterGroup = grouped[stateLetter];
if(typeof letterGroup === 'undefined')
{
letterGroup = {};
grouped[stateLetter] = letterGroup;
}
letterGroup[key] = value;
}
return grouped;
};
var groupedJson = groupMe(originalJson);
console.log(groupedJson);