HTML style offset[direction] and style. The difference between [direction]

Take Offsetleft and Style.left as an example:

• The value used by Offsetleft is a string, such as "100px", and Style.left uses a value such as
• Offsetleft can only be read, so the change of style is realized by using JS to change the value . The style.left is readable and writable, so you can adjust the position of the div by changing this value
• the value of the style.left needs to be defined beforehand, otherwise the return null when fetching
• JS access method: [Element].offsetleft, [Element].style.left

HTML style offset[direction] and style. The difference between [direction]