//获取文件后缀 function getType(file){ var filename=file; var index1=filename.lastIndexOf("."); var index2=filename.length; var type=filename.substring(index1,index2); return type; }
使用方法:
getType('123.zip');
输出为:
.zip
//获取文件后缀 function getType(file){ var filename=file; var index1=filename.lastIndexOf("."); var index2=filename.length; var type=filename.substring(index1,index2); return type; }
getType('123.zip');
.zip