CODEWITHSUNDEEP
javascript
user1679941
user1679941

Reputation:

How can I check to see if any values in an array show a value of true with an if statement?

I have the following object:

var myObj = 
{"qId":"726112",
 "text":"xx",
 "answers":[{"answerId":null,
             "answerUId":1,
             "text":"xx",
             "correct":null,
             "response":false},
            {"answerId":null,
             "answerUId":2,
             "text":"xx",
             "correct":null,
             "response":false},
            {"answerId":null,
             "answerUId":4,
             "text":"xx",
             "correct":null,
             "response":false}]}

Can someone tell me how I can use an if statement to check if any one of the response fields has a value of true?

Upvotes: 1

Views: 73

Answers (2)

java.mypassion
java.mypassion

Reputation: 95

If you want to find is it true or false change status of response in Array . you can easily understood.

var myObj = {"qId":"726112",

"text":"xx",

"answers": [{"answerId":null, "answerUId":1, "text":"xx", "correct":null, "response":true},

        {"answerId":null,
         "answerUId":2,
         "text":"xx",
         "correct":null,
         "response":false},

        {"answerId":null,
         "answerUId":4,
         "text":"xx",
         "correct":null,
         "response":true}]
};

if(myObj.answers.length > 0){

for (var i in myObj.answers){

    if(myObj.answers[i].response){
        console.log(i+"th  index of answers Array in myObj object has   "+myObj.answers[i].response);
    }
    else{

    console.log(i+"th  index of answers Array in myObj object has   "+myObj.answers[i].response);

    }
}

}

output :

0th index of answers Array in myObj object has true

1th index of answers Array in myObj object has false

2th index of answers Array in myObj object has true

Upvotes: -1

thefourtheye
thefourtheye

Reputation: 239443

You can use Array.prototype.some function, which returns true if atleast one of the elements return true, like this

if (myObj.answers.some(function(answer) { return answer.response; })) {
    # Atleast one of them is true
}

Working demo

Upvotes: 3

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