I'm new to JavaScript and I have a situation where I receive a lengthy dictionary in the browser that looks like this:
{"cat": "4" , "dog": "5", "fish": "9" }
I'm curious about the most effective method to convert it into a JSON object structured like this:
[
{
"name": "cat",
"value": "4"
},
{
"name": "dog",
"value": "5"
},
{
"name": "fish",
"value": "9"
}
]
To easily store key-value pairs into an Array, you can loop through each pair and add it to a new Array.
var items = {"apple": "3", "banana": "7", "orange": "5"};
var itemList = [];
for(var key in items) itemList.push({name: key, value: items[key]});
console.log(itemList);To iterate through the keys of a dictionary object in JavaScript, you can utilize the Object.keys() method and then use the .map() method to convert each key/value pair into the desired object:
var results = Object.keys(obj).map(function(k) {
return {
name: k,
value: obj[k]
};
});
Check out the demonstration below:
var obj = {
"cat": "4",
"dog": "5",
"fish": "9"
};
var results = Object.keys(obj).map(function(k) {
return {
name: k,
value: obj[k]
};
});
console.log(results);If you want to extract all key-value pairs from an object, you can utilize the function Object.entries. Then, by using the map function, you can construct the desired output.
let obj = {"cat": "4" , "dog": "5", "fish": "9" },
result = Object.entries(obj).map(([name, value]) => ({name, value}));
console.log(result);.as-console-wrapper { max-height: 100% !important; top: 0; }To accomplish this task, follow these steps:
var originalObject = {"cat": "4" , "dog": "5", "fish": "9" };
var newObject = [] ;
console.log(originalObject);
for (var key in originalObject) {
newObject.push({name : key, value : originalObject[key]});
}
console.log(newObject);This type of structured data can be presented in two different formats:
{
animals : [
{"name":"cat", "value": 4},
{"name":"dog", "value": 5},
{"name":"fish", "value": 9}
]
}
Alternatively, it can also be displayed like this:
[
{"name":"cat", "value": 4},
{"name":"dog", "value": 5},
{"name":"fish", "value": 9}
]
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