p5.js nf() Function

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The nf() function in p5.js is used to format the input numbers (integers or floats) into strings.

Syntax:

nf(Num/Arr, Left, Right)

Parameters: This function accepts three parameters as mentioned above and described below:

Num/Arr: This parameter holds the input positive number or an array of numbers which are to be formatted.
Left: This is the positive number which says the number of digits should be on the left side of the decimal point.
Right: This is the positive number which says the number of digits should be on the right side of the decimal point.

Return Value: It returns the formatted string.

Below programs illustrate the nf() function in p5.js:

Example 1: This example uses nf() function to format the input numbers into strings.

function setup() {  
   
    // Creating Canvas size 
    createCanvas(450, 200);  
}  
  
function draw() {  
       
    // Set the background color  
    background(220);  
     
    // Initializing the Numbers 
    let num1 = 345;  
    let num2 = 12.3;  
    let num3 = .5;  
    let num4 = .05;  
    let num5 = 0;  
    let num6 = 0.7;  
      
    // Calling to nf() function. 
    let A = nf(num1, 4, 3); 
    let B = nf(num2, 4, 2); 
    let C = nf(num3, 5, 3); 
    let D = nf(num4, 2, 3); 
    let E = nf(num5, 2, 2); 
    let F = nf(num6, 4, 3); 
      
    // Set the size of text  
    textSize(16);  
       
    // Set the text color  
    fill(color('red'));  
     
    // Getting formatted String 
    text("Formatted String is: " + A, 50, 30); 
    text("Formatted String is: " + B, 50, 60); 
    text("Formatted String is: " + C, 50, 90); 
    text("Formatted String is: " + D, 50, 110); 
    text("Formatted String is: " + E, 50, 140); 
    text("Formatted String is: " + F, 50, 170); 
}  

Output:

Example 2: This example uses nf() function to format the input numbers into strings.

function setup() {  
   
    // Creating Canvas size 
    createCanvas(450, 90);  
}  
  
function draw() {  
       
    // Set the background color  
    background(220);  
     
    // Initializing the array of numbers 
    let num1 = [345, 0, 2];  
    let num2 = [12.3, .4, 2.0];  
      
    // Calling to nf() function. 
    let A = nf(num1, 4, 3); 
    let B = nf(num2, 4, 2); 
      
    // Set the size of text  
    textSize(16);  
       
    // Set the text color  
    fill(color('red'));  
     
    // Getting formatted String 
    text("Formatted String is: " + A, 50, 30); 
    text("Formatted String is: " + B, 50, 60); 
}  

Output:

Reference: https://p5js.org/reference/#/p5/nf

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