出处:http://www.cnblogs.com/MrZouJian/p/5850553.html function getTxt1CursorPosition(){ var oTxt1 = document.getElementById("txt1"); var cursurPosition=-1; if(oTxt1.selectionStart){//非IE浏览器 cursurPosition= oTxt1.selectionStart; }else{//IE var range…
var file = $("#filedata").val(); var pos = file.lastIndexOf("\\"); var filename = file.substring(pos+1); var fileextname = filename.substring(filename.lastIndexOf("."), filename.length); 以上方法就是js获取filedata的文件名和文件名后缀,这样就可以限制上…