对比2张图片 Javascript 2016-12-012016-12-02 Since 1989 Code Link: https://juxtapose.knightlab.com/ http://www.hongkiat.com/blog/js-image-comparison-sliders/ http://graphics.wsj.com/berlin-wall-then-and-now/ https://github.com/NUKnightLab/juxtapose