I have a object array and would like to get key and value by iterating though it, however I only get 0, 1 as index. anyone know why?
const vairable = [{key1: "value1"}, {key2: "value2"}]
Object.keys(vairable).forEach((i: any) => {
console.log(i); # get 0 and 1, I would like to have key1, key2
});
Object.keys gives the indices of the array itself, not the objects in the values. Iterate over the values and explore them:
const variable = [{key1: "value1"}, {key2: "value2"}];
for (const value of variable) {
const firstKey = Object.keys(value)[0];
console.log(firstKey);
}Please try like this.
const vairable = [{key1: "value1"}, {key2: "value2"}]
vairable.forEach(item =>{
for (const [key, value] of Object.entries(item)){
console.log(key , value)
}
})
it will output :
key1 value1
key2 value2
How about this: Loop through array:
const vairable = [{key1: "value1"}, {key2: "value2"}]
for(let e of vairable) {
console.log(Object.keys(e))
}
The Object.keys method work on the Object not on the Arrays. If you want a loop through an Object, Then it will work fine like below,
const keys = {key1: "value1", key2: "value2"};
Object.keys(keys).forEach((key) => {
console.log(key);
});
keySelectors? You have an array of non-uniform objects invairable. If you want the keys and values of each object, first iteratevairable, then useObject.entries()to iterate the properties of each objectObject.entriesis not available in typescript it seems