how to validate image extention by javascript?
function validate() { var filename = document.getElementById("pimage").value; if(filename!='') { var ext = getExt(filename); if(ext == "jpg" || ext == "jpeg" || ext == "gif" || ext == "png" || ext == "") return true; alert("Please upload image files only."); return false; } } function getExt(filename) { var dot_pos = filename.lastIndexOf("."); if(dot_pos == -1) return ""; return filename.substr(dot_pos+1).toLowerCase(); } }