Javascript-从网址中的文件名中删除后缀

Question

I have a urls like this:

http://localhost/static/1941ce/917985481634941-350x_.png
http://localhost/static/1941ce/917985481634941-350x120.png

and I need to extract the original file name like this:

http://localhost/static/1941ce/917985481634941.png

What is a good way of doing this in Javascript? Cheers!

Answer 1

You should use regex for this:

 var str1 = 'http://localhost/static/1941ce/917985481634941-350x_.png'; var str2 = 'http://localhost/static/1941ce/917985481634941-350x120.png'; var postfixRe = /-[0-9x_]*\\./i; console.log(str1.replace(postfixRe, '.')); console.log(str2.replace(postfixRe, '.')); 

If you are not sure that there will be only one occurence of '-':

 var str1 = 'http://localhost/static/1941ce/917985481634941-350x_.png'; var str2 = 'http://localhost/static/1941ce/917985481634941-350x120.png'; var postfixRe = /\\/(\\d+)-[0-9x_]*\\./i; console.log(str1.replace(postfixRe, '/$1.')); console.log(str2.replace(postfixRe, '/$1.'));