Validation (#1584)

* Create validateSpecialChar.js

* Create Readme.md

Author: salma-93

Client Scripts/Validate Short Description/Readme.md

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+Effectively validates the short description field ensuring data quality and preventing invalid input.

Client Scripts/Validate Short Description/validateSpecialChar.js

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+// Client Script to Validate Special Charecters
+function onSubmit() {
+    var shortDescription = g_form.getValue('short_description');
+  var specialCharsRegex = /[^a-zA-Z0-9\s]/g;
+var specialChars = description.match(specialCharsRegex);
+  if (specialChars) {
+        alert('Description contains invalid characters: ' + specialChars.join(', '));
+        return false;
+    } else {
+        return true;
+    }
+