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正则获取文件名

//获取文件名,不带后缀

var file_name=file_path.replace(/(.*\/)*([^.]+).*/ig,"$2");


 //获取文件后缀 

1.var FileExt=file_path.replace(/.+\./,""); 

2.var fileExtension = file_path.substring(file_path.lastIndexOf('.') + 1); 

//截取文件后缀

var reg = /\.\w+$/; 

var file_name = file_path.replace(reg,'');

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