Swap key with value JSON
function swap(json){
var ret = {};
for(var key in json){
ret[json[key]] = key;
}
return ret;
}
Example here FIDDLE don't forget to turn on your console to see the results.
ES6 versions:
static objectFlip(obj) {
const ret = {};
Object.keys(obj).forEach(key => {
ret[obj[key]] = key;
});
return ret;
}
Or using Array.reduce() & Object.keys()
static objectFlip(obj) {
return Object.keys(obj).reduce((ret, key) => {
ret[obj[key]] = key;
return ret;
}, {});
}
Or using Array.reduce() & Object.entries()
static objectFlip(obj) {
return Object.entries(obj).reduce((ret, entry) => {
const [ key, value ] = entry;
ret[ value ] = key;
return ret;
}, {});
}
you can use lodash function _.invert it also can use multivlaue
var object = { 'a': 1, 'b': 2, 'c': 1 };
_.invert(object);
// => { '1': 'c', '2': 'b' }
// with `multiValue`
_.invert(object, true);
// => { '1': ['a', 'c'], '2': ['b'] }
Using ES6:
const obj = { a: "aaa", b: "bbb", c: "ccc", d: "ddd" };
Object.assign({}, ...Object.entries(obj).map(([a,b]) => ({ [b]: a })))