Create IndianGSTINValidator.js

This is js file of code

Author: vhudlikar

Specialized Areas/Regular Expressions/Indian GSTIN Validator/IndianGSTINValidator.js

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+// Alphanumeric regex pattern
+var alphanumericPattern = /^[a-zA-Z0-9]*$/;
+
+// Function to validate if a string is alphanumeric
+function isAlphanumeric(str) {
+    return alphanumericPattern.test(str);
+}
+
+// Example usage
+var examples = [
+    "abc123",    // Valid
+    "ABC",       // Valid
+    "123",       // Valid
+    "abc123!",   // Invalid (contains '!')
+    "hello world", // Invalid (contains space)
+    "123-456",   // Invalid (contains '-')
+];
+
+// Test the examples using a for loop
+for (var i = 0; i < examples.length; i++) {
+    var example = examples[i];
+    if (isAlphanumeric(example)) {
+        gs.print(example+" is a valid alphanumeric string.");
+    } else {
+        gs.print(example+ " is NOT a valid alphanumeric string.");
+    }
+}
+
+/*
+when you run this code, it will output:
+*** Script: abc123 is a valid alphanumeric string.
+*** Script: ABC is a valid alphanumeric string.
+*** Script: 123 is a valid alphanumeric string.
+*** Script: abc123! is NOT a valid alphanumeric string.
+*** Script: hello world is NOT a valid alphanumeric string.
+*** Script: 123-456 is NOT a valid alphanumeric string.
+*/