"Utilize the forEach method to iterate through an array and

Is there a way to output only the values of arrise.tester2? Maybe using forEach or JSON.stringify?
Here is the code snippet:

var arrise = [{"tester1":"testo","tester2":["testi1","testi2"]},{"tester1":"testc","tester2":["test1","test2"]},{"tester1":"testd","tester3":["tes1","tes3"]}];  

Answer №1

To achieve this, utilize the array#map and array#filter methods. Iterate through each object in the array and check for the existence of the tester2 key.

var sampleArray = [{"key1":"value1","tester2":["item1","item2"]},{"key2":"value2","tester2":["test1","test2"]},{"key3":"value3","tester3":["one","three"]}];

var output = sampleArray
              .map(obj => obj.tester2)
              .filter(value => value);
console.log(output);

Answer №2

To efficiently organize the data, begin by filtering based on the property and then proceed to map out the corresponding values.

var arrise = [{ tester1: "testo", tester2: ["testi1", "testi2"] },{ tester1: "testc", tester2: ["test1", "test2"] }, { tester1: "testd", tester3:["tes1", "tes3"] }],
    tester2 = arrise
        .filter(o => o.tester2)
        .map(o => o.tester2);

console.log(tester2);

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