lodash

lodash

by 郭 凡

JavaScript

//获取文件扩展名
function getFileExt(fileName) {
	return  _.last(fileName.split('.'));
}
//生成不同大小的图片
function pubPicBySize(fileName, size) {
	var ext = getFileExt(fileName),
  initial = _.initial(fileName.split('.')),
  result = [initial, '_640_640', ext].join('.');
  return result;
}

//example
var jpg = 'http://10.2.50.99/data/upload/1/201603/10090942187947kt.jpg';
console.log(getFileExt(jpg));
console.log(pubPicBySize(jpg, '_320_320'));