JavaScript access variables from another function

Question

I have the flowing code:

 QuestionID = 0;
 var score1 = 0;
 var score2 = 0;

 function clickanswer(answer) { 
    QuestionID++;
    if (QuestionID <= 50) {
        if (QuestionID == 2 || QuestionID == 5) {
            score1 = score1 + answer;}
        if (QuestionID == 4 || QuestionID == 7) {
            score2 = score2 + answer; }
    }
}
function useScores(){
   var data1 = score1;
   var data2 = score2; }

The clickanswer(answer) is an onlick event function from a button.
How can I use score1 and score2 variables from clickanswer(answer) function in useScores() function? Thanks.

first call click answer(call from useScores() ), then you can use score1 and score2 varibales — Vinit Prajapati
– Vinit Prajapati, Commented Jun 18, 2014 at 12:13
since you defined score1 and score2 on top of both function you can use them in both functions. — Subodh Ghulaxe
– Subodh Ghulaxe, Commented Jun 18, 2014 at 12:13
score1 and score2 are global variables, so they can be used in all functions. — Nikhil Talreja
– Nikhil Talreja, Commented Jun 18, 2014 at 12:14
Are you sure you want to increment QuestionID before deciding how the scores should compute? Looks buggy to me. — Bathsheba
– Bathsheba, Commented Jun 18, 2014 at 12:16

AndrewPolland · Accepted Answer · 2014-06-18 12:31:20Z

1

Not 100% sure what you mean. But I think it's one of these 2.

Just call the useScores() function at the bottom of your clickanswer() function. As score1 and score2 are both global variables, they will both be usable in the function. E.g.

function clickanswer(answer) { 
    QuestionID++;
    if (QuestionID <= 50) {
        if (QuestionID == 2 || QuestionID == 5) {
            score1 = score1 + answer;}
        if (QuestionID == 4 || QuestionID == 7) {
            score2 = score2 + answer; }
    }
    useScores();
}

Or else, you're wanting to pass the variables into the useScores() function. In which case, something like this might be what you want.

function clickanswer(answer) { 
    QuestionID++;
    if (QuestionID <= 50) {
        if (QuestionID == 2 || QuestionID == 5) {
            score1 = score1 + answer;}
        if (QuestionID == 4 || QuestionID == 7) {
            score2 = score2 + answer; }
    }
    useScores(score1, score2);
}

function useScores(score_1, score_2){
    var data1 = score_1;
    var data2 = score_2;
}

answered Jun 18, 2014 at 12:31

AndrewPolland

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1 Comment

alex Over a year ago

thanks Andrew, solution 2 was what I needed, it is simple but now I know how to do it.

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