Summary of the front-end written test

Summary of the front-end written test

1. How to add javascript to the webpage?

• Use the script tag to write the javascript code in between, for
  example:

<scriptype="text/javascript"> document.write("Hello
   World!");</script>

• Add external javascript file
• 行内js—javascript:return void(null)或javascript:return confirm("……");

Which of the following is not a form tag?

• SELECT
• TABLE (×) belongs to table
• INPUT
• CHECKBOX

A function in JavaScript is an object, and each function object inherits JavaScript's Function class (×) Arrow functions are not inherited