HTML Forms - W3Schools
https://www.w3schools.com/html/html_forms.aspThe HTML <form> element is used to create an HTML form for user input: <form>. . form elements. . </form>. The <form> element is a container for different types of input elements, such as: text fields, checkboxes, radio buttons, submit buttons, etc. All the different form elements are covered in this chapter: HTML Form Elements .
How To Include HTML - W3Schools
www.w3schools.com › howto › howto_html_include/* Loop through a collection of all HTML elements: */ z = document.getElementsByTagName("*"); for (i = 0; i < z.length; i++) { elmnt = z[i]; /*search for elements with a certain atrribute:*/ file = elmnt.getAttribute("w3-include-html"); if (file) { /* Make an HTTP request using the attribute value as the file name: */