如何将对象转换为带有键和值的数组?
问题描述:
我一直在试图使用标签云模块从https://github.com/d-koppenhagen/angular-tag-cloud-module,我的数据对象是这样的:如何将对象转换为带有键和值的数组?
{ "Speech": 4, "E-commerce": 1, "Meeting": 1, "Garena": 1 , "Silicon valley": 1}
根据模块的指导,数据阵列应该插入像下面这样:
[ {text: "Speech", weight: 4}, {text: "E-commerce", weight: 1}, {text: "Meeting", weight: 1},{text: "Garena", weight: 1}, {text: "Sillicon valley", weight: 1}]
我的代码位于下方,最近刚刚用Typescript编码,希望有人能给我一个提示!
var post_tags: Array<string> = post['tags'];
post_tags.forEach(element => {
this.counts[element] = (this.counts[element] || 0)+1;
this.tags.push({
text: Object.keys(this.counts),
weight: this.counts[element]
});
});
答
如果post['tags']
是:
{ "Speech": 4, "E-commerce": 1, "Meeting": 1, "Garena": 1 , "Silicon valley": 1 }
然后,你需要做的:
let normalized = [] as { text: string, weight: number }[];
Object.keys(post['tags']).forEach(tag => {
normalized.push({ text: tag, weight: post['tags'][tag] });
});
答
在普通的JavaScript,你可以使用Array#map
和拍摄物体的按键为text
和值为weight
。
var object = { Speech: 4, "E-commerce": 1, Meeting: 1, Garena: 1 , "Silicon valley": 1},
array = Object.keys(object).map(function (k) {
return { text: k, weight: object[k]};
});
console.log(array)
答
试试这个。
var post_tags = { "Speech": 4, "E-commerce": 1, "Meeting": 1, "Garena": 1 , "Silicon valley": 1}
var array = [];
Object.keys(post_tags).forEach(function(k,v){ // iterate over the object keys
var obj = {};
obj["text"] = k;
obj["weight "] = post_tags[k]
array.push(obj);
});
console.log(array);
答
interface PostTags {
text: string;
weight: number;
}
post['tags'] = { "Speech": 4, "E-commerce": 1, "Meeting": 1, "Garena": 1 , "Silicon valley": 1};
const array: Array<PostTags> = Object.keys(post['tags']).reduce((acc, tag) => {
acc.push({
text: tag,
weight: post['tags'][tag]
});
return acc;
}, [])
谢谢!有用! –