Use FOR in a fix

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Use FOR in a fix

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#1 by (3 votes)
#2 by (0 votes)

0

I have the following answers. How can I use a for to avoid putting [0], [1], [2] etc.

console.log("-------------------------------");
console.log(response.output.generic[0].options[0].label);
console.log(response.output.generic[0].options[1].label);
console.log(response.output.generic[0].options[2].label);
console.log(response.output.generic[0].options[3].label);
console.log("-------------------------------");

Thank you very much

javascript array

asked by Isaac Alejandro 03.12.2018 в 22:11

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2 answers

0

Since response.output.generic[0].options is an array you can use its lenght property. And that value use it in a for cycle.

console.log("-------------------------------");
for ( let i = 0; i < response.output.generic[0].options.lenght; i++ ) {
  console.log(response.output.generic[0].options[i].label);
}
console.log("-------------------------------");

answered by 03.12.2018 в 22:28

How to capture the id of an html input with JS Add values in columns

score 3 · Accepted Answer

You have several options:

% traditional% co:

let response = {};
response.output = {};
response.output.generic =[];
response.output.generic[0] = [];
response.output.generic[0].options = [{label:"Option 1"},{label:"Option 2"},{label:"Option 3"},{label:"Option 4"}];

console.log("-------------------------------");
for(let i=0;i<response.output.generic[0].options.length;i++){
  console.log(response.output.generic[0].options[i].label);
}
console.log("-------------------------------");

for

let response = {};
    response.output = {};
    response.output.generic =[];
    response.output.generic[0] = [];
    response.output.generic[0].options = [{label:"Option 1"},{label:"Option 2"},{label:"Option 3"},{label:"Option 4"}];

    console.log("-------------------------------");
    for(let item of response.output.generic[0].options){
      console.log(item.label);
    }
    console.log("-------------------------------");

for of

let response = {};
        response.output = {};
        response.output.generic =[];
        response.output.generic[0] = [];
        response.output.generic[0].options = [{label:"Option 1"},{label:"Option 2"},{label:"Option 3"},{label:"Option 4"}];

        console.log("-------------------------------");
        response.output.generic[0].options.forEach((v)=>{
          console.log(v.label);        
        });
          
        console.log("-------------------------------");

Personally forEach seems to me the cleanest of all.

Here you have more info on loops and iterators