循环创建数组+循环增量？

Question

I wanted to create a function which gets called upon-page load and generates a graph based on what user inputs (multiple datasets, using chart.js ).

Decided to rely on prompt() for initial testing, but soon ran into a problem.

function defineDatasets(itt){
    for(i=0; i<itt; i++){
        var dataSet+i=[]; // <--- Does not result in a array called "dataSet0[], ..." etc
    }
}

So my question is, if and how could this be achieved?

Answer 1

If you're trying to suffix your arrays with an index, why not just make an array of arrays? Also be sure to define your dataSet outside the function scope:

let dataSet = [];

function defineDatasets(itt) {
    for(var i = 0; i < itt; i++) {
        dataSet.push([]);
    }
}

console.log(dataSet[0]); // []

Now instead of referencing these arrays with dataSetN , you can do dataSet[N] , where N is the Nth dataSet index.