javascript convert to float code example

Example 1: javascript convert string to float

// parseFloat takes in a string value and converts it to a float 
// The parseFloat function will look at the first character of
// the string and decided whether that character is a number or not
// If not the parseFloat function will return Nan

let stringNumber = "8.0"

let floatNuumber = parseFloat(stringNumber);

Example 2: javascript convert float to int

function float2int (value) {
    return value | 0;
}

float2int(3.75); //3 - always just truncates decimals

//other options
Math.floor( 3.75 );//3 - goes to floor , note (-3.75 = -4)
Math.ceil( 3.75 ); //4 - goes to ceiling, note (-3.75 = -3)
Math.round( 3.75 );//4

Example 3: convert string to float javascript

//do do this use parseFloat()
//it turns a string into a float in js
//you can later use this for animation
var string = "10"
string = parseFloat(string)
console.log(string)

Example 4: number to float js

(3).toFixed(1)