This question already has answers here:
Is floating point math broken?
(31 answers)
Closed 2 years ago.
var a = 8.4286;
var b = 2;
console.log(a-b)
Actual Output: 6.428599999999999
Expected Output: 6.4286
What is the reason behind this and how to get around it?
You can use .toFixed:
var a = 8.4286;
var b = 2;
let sub = a-b;
sub = sub.toFixed(4);
console.log(sub);
Related
This question already has answers here:
Extremely large numbers in javascript
(5 answers)
Is floating point math broken?
(31 answers)
Closed 4 months ago.
we have string input number
input="6145390195186705543"
if we want to convert to number ;java Script auto rounded this input;
(6145390195186705543)
(6145390195186705000)
This should work for what you are trying to achieve
const myFunction = (num) => {
const length = num.length;
const result = `(${num.slice(0,16).padEnd(length, "0")})`;
return result;
};
const input="6145390195186705543";
const output = myFunction(input);
console.log(output)
This question already has answers here:
How do you round to 1 decimal place in Javascript?
(24 answers)
Rounding a number to one decimal in javascript [duplicate]
(4 answers)
Round values to one decimal place in javascript [duplicate]
(2 answers)
How to show one decimal place (Without rounding) and show .0 for whole numbers?
(4 answers)
Closed 3 years ago.
**<script>
function roundNum() {
var f = document.getElementById("f").value;
var g = document.getElementById("g").value
var g = g-u
document.getElementById("ng").innerHTML = g
</script>**
I am trying to receive a three-digit answer (example: 95.7, instead of 95.6923531)
You can use the javascript toFixed() method.
Example:
var x = 9.656;
x.toFixed(1); // returns 9.7
x.toFixed(2); // returns 9.66
x.toFixed(4); // returns 9.6560
x.toFixed(6); // returns 9.656000
Try this..
Syntax:
number.toFixed(x)
var num = 95.6923531;
console.log(num.toFixed(1));
console.log(num.toFixed(2));
console.log(num.toFixed(3));
This question already has answers here:
Is floating point math broken?
(31 answers)
Closed 3 years ago.
I try to get the difference between two decimals but i need a short number. Example:
var number1 = 1.1500
var number2 = 1.1550
var result = parseFloat(number2) - parseFloat(number1);
This way, i get "0.0050000000000001155" but i just need "0.0050".
Thanks :)
you can use toFixed(). And you don't need to call parseFloat the numbers are already float
var number1 = 1.1500
var number2 = 1.1550
var result = +(number2 - number1).toFixed(5);
console.log(result)
This question already has answers here:
Format number to always show 2 decimal places
(37 answers)
How to round float numbers in javascript?
(19 answers)
Closed 4 years ago.
when I calc this value I got a big number like 48.4979898749,
how convert this to 48.49 ???
You could take the number and apply Number#toFixed with the wanted number of digits.
var valuee = document.getElementById("valueNum"),
result = document.getElementById("res");
valuee.onkeyup = function () {
"use strict";
result.innerHTML = "المبلغ المطلوب " + (valuee.value * 0.0680).toFixed(2) + " دولار";
};
<input type="text" id="valueNum">
<div id="res"></div>
This question already has answers here:
String Conversion in Javascript (Decimal to Binary)
(5 answers)
Closed 7 years ago.
I would like to ask help whether am I doing the right thing or not. You see I am trying to test myself by displaying the bit pattern of a number in the most efficient way as possible. But I'm having trouble on how to display the pattern cause I'm still learning javascript. Here's my code.
<script>
var bitPattern = function(given) {
for(var i = 1 << 31; i > 0; i = i / 2){
document.write((given & i) ? 1 : 0);
}
};
var number = prompt("Enter a number to convert: ");
bitPattern(number);
</script>
The best way to do this is:
var number = prompt("Enter a number to convert: ");
var bitPattern = parseInt(number).toString(2);
document.write(bitPattern);