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MiSCapu
Asked: 2020-05-22 13:32:29 +0800 CST 2020-05-22 13:32:29 +0800 CST

How can I call a function from the prompt method in JavaScript?

  • 772

If someone could help me, I would really appreciate it... I've had this problem for a few days: I have a function called translate like this, with which I want to translate some numbers into a word, see:

function translate(Num){
    switch(Num){
        case 0: document.write('primer');
        break;
        case 1: document.write('segundo');
        break;
        case 2: document.write('tercer');
        break;
        case 3: document.write('cuarto');
        break;
        case 4: document.write('quinto');
        break;
    }
}

And I have this other function, where I want the user to enter numbers to collect them into a vector. Here I use the translate function to translate the subscript of the for loop according to the place of each number entered, see:

function askNums(Nums){
    var i;
    for(i = 0; i < Nums.length; i++){
        var NumsVector;
        NumsVector = parseInt(prompt(' Por favor ingrese el '+translate(i)+' número: ',' '));
        Nums[i] = NumsVector;
    }
}

When executing this code:

var Nums;
Nums = new Array(5);
askNums(Nums);

There is no first, second, third, etc. which would be the execution of the translate function ... Have I done something wrong?

javascript

1 Answers

  1. Best Answer

    In your case, what you are trying to do with the function translateis to return a string that can be concatenated with the string of the prompt.

    To do this, translateyou should not do a document.write, but return the string .

    function translate(Num){
    switch(Num) {
        case 0: return 'primer';
        case 1: return 'segundo';
        case 2: return 'tercer';
        case 3: return 'cuarto';
        case 4: return 'quinto';
        default: return 'unknown';
    }
}

    I hope it works.

    • 1