Native js achieves product magnifiers and js product magnifiers

Native js achieves product magnifiers and js product magnifiers

Implementation Principle

Magnifiers on a large image: area of a small image = size of a large image: size of a small image = offsetLeft of a large image: offsetLeft of a small image

In the above formula, only the offsetLeft of a large image is unknown. Therefore, the offsetLeft of a large image = the size of a large image/the size of a small image * The offsetLeft of a small image

Detailed comments in the code

Complete code

Note: After copying the image to a local device, replace the image to view the effect.

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