Add file type validation for attachments on submit

Author: Nisha-admin

CheckAttachmentFiletypr.js

@@ -0,0 +1,30 @@
+function onSubmit() {
+    var arr = [];
+    var extension1 = '.txt';
+    var extension2 = '.pdf';
+    var extension3 = '.docx';
+    var names = this.document.getElementsByClassName('get-attachment ng-binding ng-scope');
+    for (var i = 0; i < names.length; i++) {
+        var val = names[i].innerHTML;
+        arr.push(val.toString());
+    }
+
+    var countRequired = 1;
+    if (window == null) {
+        if (this.document.getElementsByClassName('get-attachment').length != countRequired) {
+            g_form.addErrorMessage('You can add only one attachment');
+            return false;
+        }
+    }
+
+    for (var j = 0; j < arr.length; j++) {
+        if ((arr[j].indexOf(extension1) > -1) || (arr[j].indexOf(extension2) > -1) || (arr[j].indexOf(extension3) > -1)) {
+            return true;
+        } else {
+            g_form.addErrorMessage('Unsupported file format. Please attach files with extensions .txt, .pdf, .doc');
+            return false;
+        }
+
+    }
+
+}