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p5.js | nf() Function
• Last Updated : 22 Apr, 2019

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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