How to concatenate results of a For in Javascript

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How to concatenate results of a For in Javascript

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#1 by (3 votes)
#2 by (2 votes)

0

I have the following code that brings me 3 answers in the following way in the Javascript console:

"Prueba 1"
"Prueba 2"
"Prueba 3"

But I need you to show it to me together and not in 3 lines separately. To show it to me in one line:

"Prueba 1", "Prueba 2", "Prueba 3"

This is the For with which I bring the results by the 3 lines separately:

for(let i=0;i<respuesta.output.generic[0].options.length;i++){
var options = respuesta.output.generic[0].options[i].label;
console.log(options);

How could I get these results together?

Thank you very much!

javascript html

asked by Isaac Alejandro 07.12.2018 в 16:59

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2 answers

3

If the information you want to iterate is in an array you can choose to print it with the toString() method or use the join(';') method to indicate the delimiter character, for example:

const array = ['Prueba 1', 'Prueba 2', 'Prueba 3']
console.log(array.toString())

let a = array.join(',')
console.log(a)

Or you can store everything in one variable and print it at the end as follows:

const array = ['Prueba 1', 'Prueba 2', 'Prueba 3']
let result = '';
for(i = 0; i<array.length;i++){
  result += array[i].concat(',');
}
result.substring(0,result.length-1)
console.log(result)

References

join ()

toString ()

answered by 07.12.2018 в 17:16

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score 2 · Accepted Answer

if you want to show them followed in the console (which is where you say):

    var options = '';
    var ejemplo = {
             options : [1,3,4,'hola',5,'adios']
       };
    for(let i=0;i<ejemplo.options.length;i++){
         options += ejemplo.options[i] +', ';
    }
    console.log(options);

Note: in the example I have changed the attributes of your variable, since I do not know them, but adapt it and it will help you