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javascriptnode.jsfractions

Fixed precision always in js 0.5 -> 0.5000

I am trying to fix every fraction number up to n decimal place. But in javascript/nodejs it seems not possible to convert 0.5 to 0.5000. Due to which my test cases which expect 0.5000 fails.

Any idea how can I do this in nodejs/javascript?

Solution

  • As others said Number.prototype.toFixed() should work for you. I tried my hands on and this works perfectly.

    function plusMinus(arr) {
let length = arr.length;
let o = arr.reduce((acc,cv)=>{
    if(cv > 0){
        acc.pos++;  
     }
    else if(cv<0){
        acc.neg++;
    }
    else{
        acc.zero++;
    }
    return acc;
},{pos:0,neg:0,zero:0});
    console.log((o.pos/length).toFixed(4));
    console.log((o.neg/length).toFixed(4));
    console.log((o.zero/length).toFixed(4));
}
plusMinus([-4,3,-9,0,4,1]);