反转javascript中的对象

Question

I want to reverse an object in JavaScript. For Example:

Input: obj ={'one': 1, 'two': 2, 'three':3 }

output: obj ={'three': 3, 'two': 2, 'one':1 }

Is there any method in javascript or lodash?

Answer 1

here is what you're looking for,

 function dict_reverse(obj) { new_obj= {} rev_obj = Object.keys(obj).reverse(); rev_obj.forEach(function(i) { new_obj[i] = obj[i]; }) return new_obj; } my_dict = {'one': 1, 'two': 2, 'three':3 } rev = dict_reverse(my_dict) console.log(rev) 

Answer 2

do you need something like this ?

 let obj ={'one': 1, 'two': 2, 'three':3 }; let result = {}, stack = []; for(property in obj){ stack.push({'property' : property, 'value' : obj[property]}) } for(let i=stack.length-1;i>=0;i--){ result[stack[i].property] = stack[i].value; } console.log(result);