how to use options:hashFunction?

[wxwxnzm]

I tried to time imgPath and imgName，like this
sprotesmith({ imgName: 'a_icon.png' + (+new Date()), imgPath: '/img/a_icon.png' + (+new Date()) })
gulp will change the file name every time ，
so i tried：
sprotesmith({ imgName: 'a_icon.png', imgPath: '/img/a_icon.png'， hashFunction(f, c) { return f + '_17点19分‘； } })
it didn't work

Is it possible to generate different hash values each time depending on the picture?

[Romanx]

Hi there, by default if you don't provide a hash function spritesmash will use the MD5 on the contents of the file to determine the hash making it stable based on the contents of the file. Is that what you're after?

[brunis]

I tried to time imgPath and imgName，like this
sprotesmith({ imgName: 'a_icon.png' + (+new Date()), imgPath: '/img/a_icon.png' + (+new Date()) })
gulp will change the file name every time ，
so i tried：
sprotesmith({ imgName: 'a_icon.png', imgPath: '/img/a_icon.png'， hashFunction(f, c) { return f + '_17点19分‘； } })
it didn't work

Is it possible to generate different hash values each time depending on the picture?

You misspelled spritesmith and this project is spritesmash, not smith.

[brunis]

gulp.task('default', function () {
    return gulp.src('src/images/*.{png}')
    .pipe(spritesmith({
      imgName: 'sprite.png',
      cssName: 'sprite.css',
    }))
    .pipe(spritesmash({
"hashFunction" : "SHA1" // or MD5 (default) or timestamp
}))
    .pipe(gulp.dest('dist'));
});