Javascript 将对象的属性和值转换为键值对数组
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Convert object's properties and values to array of key value pairs
提问by evanmcdonnal
I'm fairly new to JavaScript and am not sure this is possible to do but basically I would like to take an object and convert it into an array of strings in the format; array[0] = 'prop1=value1'
我对 JavaScript 相当陌生，不确定这是否可行，但基本上我想获取一个对象并将其转换为格式的字符串数组； array[0] = 'prop1=value1'
The reasoning behind this is that I'm having a user enter a list of k=v pairs into a form, later it's written as an object within a json blob. Going from the key value csl to the json object was simple, now I need to go back the other way (I've received the JSON via an ajax call and want to populate a blank form). Is this possible in JavaScript? If not please offer a reasonable work around.
这背后的原因是我让用户将 k=v 对的列表输入到一个表单中，后来它被写成一个 json blob 中的对象。从键值 csl 到 json 对象很简单，现在我需要以另一种方式返回（我已经通过 ajax 调用接收到 JSON 并想要填充一个空白表单）。这在 JavaScript 中可能吗？如果没有，请提供合理的解决方法。
Sample code;
示例代码；
Object in debugger;
调试器中的对象；
Object
private_key: "private-key"
public_key: "public-key"
I need to convert that to;
我需要将其转换为；
"private_key=private-key,public_key=public-key"
Basically I need something like this (pseudo code)
基本上我需要这样的东西（伪代码）
var outputString = '';
foreach (prop in obj)
{
outputString = outputString + prop.tostring() + '=' + prop.value + ',';
}
回答by carlosfigueira
You're probably looking for something along the lines of
你可能正在寻找类似的东西
var obj = {value1: 'prop1', value2: 'prop2', value3: 'prop3'};
var arr = [];
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
arr.push(key + '=' + obj[key]);
}
};
var result = arr.join(',');
alert(result);
Notice that it will work fine if your values are strings; if they're complex objects then you'll need to add more code.
请注意，如果您的值是字符串，它将正常工作；如果它们是复杂的对象，那么您将需要添加更多代码。
Or you can just use jQuery.param, which does what you want, even for complex types (although it uses the &character as the separator, instead of the comma.
或者您可以只使用jQuery.param，它可以满足您的需求，即使对于复杂类型（尽管它使用&字符作为分隔符，而不是逗号。
回答by remydib
In ES6 you can use Object.entries({object1:1,object2:2});. The result is: [["object1",1],["object2",2]]
在 ES6 中，您可以使用Object.entries({object1:1,object2:2});. 结果是：[["object1",1],["object2",2]]
回答by Plynx
var array = [];
for (k in o)
{
if (o.hasOwnProperty(k))
{
array.push(k+"="+o[k]);
}
}
You can then jointhe array for your final string.
然后你可以join为你的最终字符串数组。
回答by Bergi
var object = {
private_key: "private-key",
public_key: "public-key"
};
var array = [];
for (var prop in object)
array.push(prop + "=" + object[prop]);
return array.join(','); // "private_key=private-key,public_key=public-key"
Notice the order is not guaranteed.
请注意，订单无法保证。
回答by mojoaxel
obj = {
private_key: "private-key",
public_key: "public-key"
}
str = JSON.stringify(obj).replace(/[{}]/g, '').replace(/"/g, '').replace(/:/g, '=');
console.log("Using JSON.stringify:\n", str);
str = Object.keys(obj).map((key) => `${key}=${obj[key]}`).join(',')
console.log("Using ES6 keys/map:\n", str);
str = jQuery.param(obj).replace(/&/g,',');
console.log("Using jQuery.param:\n", str);<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>回答by Ram Pukar
var obj =[
{'2018-05-07':1},
{'2018-05-08':3},
{'2018-05-09':2}
];
for(var i of obj) {
var key = Object.keys(i).toString();
console.log(i,'=',i[key]);
}
Result
结果
:
：
