Is there a way to create two arrays from a JSON input, with one array containing only keys and the other containing only values, while excluding pairs where the key is numerically equal to the value?
Is there a way to create two arrays from a JSON input, with one array containing only keys and the other containing only values, while excluding pairs where the key is numerically equal to the value?
To iterate over the key-value pairs of an object, you can utilize `Object.entries` and then sort them into separate arrays if the key and value are different. Here's a demonstration:
let obj = {a:5, b:6, c:3, '1':4,'2':2};
let keys = [] , values = [];
Object.entries(obj).forEach(([key,value])=> {
if(key != value){
keys.push(key);
values.push(value)
}
});
console.log('keys:',keys);
console.log('values:', values);If my understanding is correct, there are two built-in functions that can provide you with the keys and values of an object without the need for looping.
Object.values retrieves all values of an object (mdn docs)Object.keys retrieves all keys of an object (mdn docs)These functions can be used with both Objects and Arrays:
var data = {x:1, y:2, z:3, '1':5,'2':'b'};
// visualization of input data
console.info('data-object:', JSON.stringify(data));
// retrieved keys
console.info('keys:', Object.keys(data));
// retrieved values
console.info('values:', Object.values(data));
var list = [5,6,7,8];
// visualization of input data
console.info('data-array:', JSON.stringify(list));
// retrieved keys
console.info('keys:', Object.keys(list));
// retrieved values
console.info('values:', Object.values(list));
var data2 = {"a":10, "b":20};
// visualization of input data
console.info('data-obj2:', JSON.stringify(data2));
// extracted keys
console.info('keys:', Object.keys(data2));
// extracted values
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