我有这个示例JSON对象
var sample = [{
"label": "one",
"value": 1
}, {
"label": "two",
"value": 2
}, {
"label": "three",
"value": 3
}, {
"label": "four",
"value": 4
}, {
"label": "five",
"value": 5
}];
我想改变一些像这样的事情
var sample = [{
"label": "one",
"value": 1,
"newKeyValue": "one|1"
}, {
"label": "two",
"value": 2,
"newKeyValue": "two|2"
}, {
"label": "three",
"value": 3,
"newKeyValue": "three|3"
},
...
];
它应结合两个键值并返回组合两者的新键值。
JSON是动态的关键标签,值不是静态的,它可以是任何东西。例如[{"name":"srinivas","lastname":"pai"}]
答案 0 :(得分:4)
你可以使用这样的地图:
修改强>
用于处理您可以使用的通用键
第一个密钥Object.keys(d)[0]
第二个键Object.keys(d)[1]
var sample = [
{
"label":"one",
"value":1
},
{
"label":"two",
"value":2
},
{
"label":"three",
"value":3
},
{
"label":"four",
"value":4
},
{
"label":"five",
"value":5
}
];
var data = sample.map(function(d){
return {label: Object.keys(d)[0], value: Object.keys(d)[1], newKeyValue: Object.keys(d)[0] +"|" + Object.keys(d)[1]}
})
console.log(data)

希望这有帮助!
答案 1 :(得分:3)
您可以使用Array#map()
,Object.keys()
和Array#join()
。
在ES6中,您可以使用Arrow functions。
sample = sample.map(obj => {
var keys = Object.keys(obj);
obj.newKeyValue = keys.map(key => obj[key]).join('|');
return obj;
});
var sample = [{
"label": "one",
"value": 1
}, {
"name": "two",
"age": 2
}, {
"five": "three",
"six": 3
}, {
"company": "four",
"organization": 4
}, {
"label": "five",
"value": 5
}];
sample = sample.map(function (x) {
var keys = Object.keys(x);
x.newKeyValue = keys.map(key => x[key]).join('|');
return x;
});
console.log(sample);
document.body.innerHTML = '<pre>' + JSON.stringify(sample, 0, 4) + '</pre>';
&#13;
在ES5中,您可以使用与匿名函数相同的代码
sample = sample.map(function (obj) {
var keys = Object.keys(obj);
obj.newKeyValue = keys.map(function (key) {
return obj[key]
}).join('|');
return obj;
});
由动态键引起的限制:
答案 2 :(得分:2)
var sample = [
{
"label":"one",
"value":1
},
{
"label":"two",
"value":2,
"optionalValue":2
},
{
"label":"three",
"value":3,
"remarks":"free text"
},
{
"label":"four",
"value":4
},
{
"label":"five",
"value":5
}
];
for (var key in sample) {
var newValue = [];
for (var piece in sample[key]){
newValue.push(sample[key][piece])
}
sample[key]["newKeyValue"] = newValue.join('|');
}
$('pre').html(JSON.stringify(sample,null,4));
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<pre></pre>
答案 3 :(得分:1)
您可以使用Array.prototype.forEach()
进行原位更改。
forEach()
方法每个数组元素执行一次提供的函数。
编辑:由于订单的原因,使用动态密钥存储在数组中。
var sample = [{ "label": "one", "value": 1 }, { "label": "two", "value": 2 }, { "label": "three", "value": 3 }, { "label": "four", "value": 4 }, { "label": "five", "value": 5 }];
sample.forEach(function (a) {
a.newKeyValue = ['label', 'value'].map(function (k) { return a[k]; }).join('|');
});
document.write('<pre>' + JSON.stringify(sample, 0, 4) + '</pre>');
&#13;
答案 4 :(得分:0)
如果他们有更多元素,那么请使用$.extend
var sample = [
{
"label":"one",
"value":1
},
{
"label":"two",
"value":2
},
{
"label":"three",
"value":3
},
{
"label":"four",
"value":4
},
{
"label":"five",
"value":5
}
];
$(sample).each(function(i,item){
var keyes = Object.keys(item);
sample[i] = $.extend(item,{newKeyValue: item[keyes[0]] +"|" +item[keyes[1]]});
});
console.log(sample)
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
当您拥有更多对象并且想要合并两者时,
$.extend
也很有用
的例如即可。
var base = {
"label":"one",
"value":1
}
并且您想要添加更多对象
var extra = {
"new1":"value1",
"new2":"value2",
"new3":"value3",
"new4":"value4",
}
然后它将由
完成$.extend(base,extra);
输出:
{
"label":"one",
"value":1,
"new1":"value1",
"new2":"value2",
"new3":"value3",
"new4":"value4",
}
答案 5 :(得分:0)
var sample = [{"name":"srinivas","lastname":"pai"}];
sample.map(function(item) {
item.newKeyValue = Object.getOwnPropertyNames(item).map(function(d) {return item[d];}).join("|");
})
console.log(sample);