Create Readme.md

Author: bharakm

Client-Side Components/Catalog Client Script/Reusable GlideAjax Client Script/Readme.md

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+This solution provides a generic and reusable GlideAjax-based client-server interaction in ServiceNow that allows querying any table by passing:
+
+Table name
+Key field and value
+Desired fields to retrieve
+
+It dynamically returns field values from the server and populates them on the form, making it ideal for use cases like CMDB enrichment, entitlement lookups, or dynamic form population.
+
+1. Client Script (onChange)
+Triggers on field change.
+Sends parameters to the Script Include via GlideAjax.
+Receives JSON response and sets target field value.
+
+Parameters:
+sysparm_table_name: Table to query (e.g., sys_user)
+sysparm_key_field: Field to match (e.g., sys_id)
+sysparm_key_value: Value to match
+sysparm_fields: Comma-separated list of fields to retrieve
+
+2. Script Include: DynamicTableQueryUtil
+   
+Processes incoming parameters.
+Queries the specified table and retrieves requested fields.
+Supports both standard fields and catalog item variables.
+Returns a JSON object with field values and display values.