是否有任何 function 来修复 javascript 中数学计算的返回值？

Question

I'm doing this math which is (a - b) / a = number but javascript doesn't return the correct value

Here is my code

6200000 - 5800000 / 6200000

it should return 0.06451 but it returns

5799998.931034483

How can I get only 0.06?

Answer 1

Try using parenthesis to evaluate the subtraction first and toFixed() :

 var n = ((6200000 - 5800000) / 6200000).toFixed(2); console.log(n);

Answer 2

use brackets

(6200000 - 5800000) / 6200000

division happens before subtraction.. to avoid it, use brackets

if you want two digits in decimal use ((6200000 - 5800000) / 6200000).toFixed(2)

Answer 3

((6200000 - 5800000) / 6200000).toFixed(2)

Answer 4

Order of math operations.

It'll run the divison before the subtraction.

To increase the order of the subtraction you can stick it in brackets.

(6200000 - 5800000) / 6200000

To shrink it to 2 decimal places add a toFixed function.

((6200000 - 5800000) / 6200000).toFixed(2)