我有以下代码:
var count = 0;
for (const post of posts)
{
if (count == 4)
break
count++;
var request = require('request');
var path = 'image' + count + '.jpg';
gm(request(post.image_versions2.candidates[1].url))
.flop()
.write(path, function (err) {
if (!err) {
if (fs.existsSync(path)) {
console.log('finished modifying image , preparing to upload photo');
uploadPicture(ig, "", path);
}
} else {
console.log(err);
}
})
}
现在的问题是fs.existsSync(path)
中的路径始终位于image4.jpg ..我的猜测是,在执行回调时,for循环已经结束,因此它始终指向image4.jpg < / p>
如何获取传递给参数的变量的适当路径变量?