p5.js textSize() Function

The textSize() function in p5.js is used to set or return the font size of text. This function is used in all subsequent calls to the text() function.

Syntax:

textSize(size)

or

textSize()

Parameters: This function accepts single parameter sizewhich stores the size of the text in terms of pixels.

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

Example 1: This example uses textSize() function to set the font size of text.

function setup() {

    // Create Canvas of given size
    createCanvas(380, 170);
}

function draw() {

    let string = "GeeksforGeeks";

    // Set the background color
    background(220);

    // Set the text size
    textSize(30);

    // Set the text
    text(string, 100, 30);
}

Output:

Example 2: This example uses textSize() function to return the font size of text.

function setup() {

    // Create Canvas of given size
    createCanvas(380, 170);
}

function draw() {

    let string = "GeeksforGeeks";

    // Set the background color
    background(220);

    // Set the text size
    textSize(16);

    // store the size of text
    var u = textSize();

    // Set the stroke color
    stroke(255, 204, 0);

    // Display result
    text("Value of Text Size is : "
            + u, 50, 30);
}

Output:

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