Issue
If the calculation for example is 10/8
the code should answer 1.25
instead of 1.250
or 0/1
should be 0
instead of 0.000
. How does one remove zeros from decimal numbers in Javascript while still keeping the max amount of digits (if no zeros) after the dot three (.toFixed(3);
)
var operator = ['/'];
function F1() {
Z1 = document.getElementById("Z1");
Z2 = document.getElementById("Z2");
oper=document.getElementById("operator");
answer=document.getElementById("answer");
rZ1 = Math.floor((Math.random()*10));
rZ2 = Math.floor((Math.random()*10)+1);
op = operator[Math.floor(Math.random()*1)];
Z1.innerHTML=rZ1; Z2.innerHTML=rZ2;
oper.innerHTML=op;
answer.innerHTML = eval(rZ1 + op + rZ2).toFixed(3);}
<button onclick="F1()"> New </button>
<p> <label id="Z1"> </label>
<label id="operator"> </label>
<label id="Z2"> </label>
= <label id="answer"> </label> </p>
Solution
I'm sure there is a more elegant solution, but this works:
var operator = ['/'];
function F1() {
Z1 = document.getElementById("Z1");
Z2 = document.getElementById("Z2");
oper=document.getElementById("operator");
answer=document.getElementById("answer");
rZ1 = Math.floor((Math.random()*10));
rZ2 = Math.floor((Math.random()*10)+1);
op = operator[Math.floor(Math.random()*1)];
Z1.innerHTML=rZ1; Z2.innerHTML=rZ2;
oper.innerHTML=op;
var blah = parseFloat(eval(rZ1 + op + rZ2).toFixed(3));
if (blah.toFixed(2) == blah) {
blah = parseFloat(blah.toFixed(2));
if (blah.toFixed(1) == blah) {
blah = parseFloat(blah.toFixed(1));
}
}
answer.innerHTML = blah;}
<button onclick="F1()"> New </button>
<p> <label id="Z1"> </label>
<label id="operator"> </label>
<label id="Z2"> </label>
= <label id="answer"> </label> </p>
Answered By - Rob Moll Answer Checked By - Cary Denson (PHPFixing Admin)
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