Javascript-从网址中的文件名中删除后缀

Question

我有这样的网址：

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我需要这样提取原始文件名：

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

用Java脚本执行此操作的好方法是什么？ 干杯！

Answer 1

您应该为此使用正则表达式：

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, '.'));

如果您不确定是否只会出现'-'：

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.'));