面试题与答案

The box model consists of content, padding, border, and margin. It defines the spacing and dimensions of an element.

Example:

div {
  width: 200px;
  padding: 20px;
  border: 2px solid black;
  margin: 10px;
}

'GET' is used to request data from a specified resource, while 'POST' is used to submit data to be processed to a specified resource.

The 'box-sizing' property defines how the width and height of an element are calculated, including the padding and border, or excluding them.

Example:

div {
  box-sizing: border-box;
}

Cookies are small pieces of data stored on the client's machine, used to store user information and maintain state between HTTP requests.

Example:

document.cookie = 'username=John; expires=Thu, 18 Dec 2024 12:00:00 UTC; path=/';

'localStorage' stores data with no expiration time, while 'sessionStorage' stores data for the duration of the page session.

The 'DOCTYPE' declaration defines the document type and version of HTML or XHTML, ensuring proper rendering in web browsers.

Example:

The CSS Box Model is a design and layout concept that consists of content, padding, border, and margin, defining the space around and within an HTML element.

'localStorage' persists even when the browser is closed and reopened, while 'sessionStorage' data is only available for the duration of the page session.

DRY (Don't Repeat Yourself) is a software development principle advocating for reducing redundancy by reusing code and avoiding duplication.

The 'meta' tag with the 'charset' attribute specifies the character encoding for the HTML document, ensuring proper text rendering.

Example:

'event.preventDefault()' is used to prevent the default behavior associated with an event, such as preventing a form submission or a link from navigating.

Example:

document.getElementById('myForm').addEventListener('submit', function(event) {
  event.preventDefault();
  // additional handling code
});