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p5.js | center() Function
  • Last Updated : 20 Aug, 2019

The center() function is used to set the alignment of element into the center either vertically, horizontally, or both, relative to its parent element or according to the body if the element has no parent. If this function does not contain any parameters then the element will align both vertically and horizontally.

Note: This function requires the p5.dom library. So add the following line in the head section of the index.html file.




<script language="javascript"
    type="text/javascript" src="path/to/p5.dom.js">
</script>

Syntax:

center( align )

Parameters: This function accepts single parameter align which holds the string ‘vertical’ or ‘horizontal’ to align the element.

Below examples illustrate the center() function in p5.js:



Example 1:




function setup() {
      
    // Create canvas of given size
    createCanvas(1000, 200);
      
    // Set background color
    background('green');
      
    var div = createDiv('').size(200, 70);
      
    div.html('Welcome to GeeksforGeeks', true);   
    
    // Set the position of div into center
    div.center();
    
    // Set font-size of text
    div.style('font-size', '24px');
    
    // Set font-color of text
    div.style('color', 'white');
    
    div.style('border', '1px solid white');
    
    div.style('text-align', 'center');
  

Output:

Example 2:




function setup() {
      
    // Create canvas of given size
    createCanvas(1000, 200);
      
    // Set background color
    background('green');
      
    // Create an input element
    var input_val = createInput('');    
      
    // Set the attribute and its value    
    input_val.attribute('value', 'Welcome to GeeksforGeeks');     
    
    // Set the position of div into center
    input_val.center();
    
    // Set font-size of text
    input_val.style('font-size', '24px');
      
    // Set the width of input area
    input_val.style('width', '300px');
  

Output:

full-stack-img

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