如何一一提取作为关联数组（对象）值的数组元素

Question

I'm trying to extract one array element at a time from an associative array (object) using JavaScript. I tried the method of extracting values ​​from an associative array, but the result was not as expected.

let obj = {
  label1: [1.1, 1.4],
  label2: [1.2, 1.5],
  label3: [1.3, 1.6],
}

function test() {
  Object.keys(obj).forEach(key => {
    obj[key].forEach(elm => {
        console.log(elm[0]) //1
        console.log(elm[1]) //.
    }
  }
}

I was expecting the following results, but 1.1 was broken down.

console.log(elm[0]) //1.1
console.log(elm[1]) //1.4
console.log(elm[2]) //1.7

Is there an effective way to extract this array element successfully?

Answer 1

You don't need access subproperties of your "elm"

Just use

function test(obj) {
    Object.keys(obj).forEach(key => {
        //obj[key] is [1.1, 1.4]
        obj[key].forEach(elm => {
            //elm is 1.1
            console.log(elm);
        });
    });
}