/,./,.../Difference,... difference

/,./,.../Difference,... difference

/Represents the root directory of the current file (the root directory of the drive letter, such as drive C and drive D );

./Represents the root directory of the current file. If you want to read files in the same folder, you can leave it empty;

../Represents the parent folder of the file where the current file is located

As follows: I want to read the four jd1 jd2 jd3 jd4 images (root directory: G disk; here, demo-> a and jd1.jpg; a-> B and jd2.jpg; b-> cand jd3.jpg; c-> demo0and jd4.jpg)

A little big. Check the console: