We are experiencing an issue with WebSQL: The number of placeholders in the statement does not match the number of arguments provided

I'm looking to develop a customized function for dynamically inserting data into the webSQL Database. Unfortunately, indexed DB is not an option due to Zetakey's lack of support for it.

 tx.executeSql("INSERT INTO " + table + "(" + formatfields + ")
 VALUES (" + formatqm + ")",
          [formatvalues],
          webdb.onSuccess,
          webdb.onError);

In passing on the query:

formatfields = "one, two"; (could be any number)
formatqm = "?, ?";
formatvalues = "123, 456"; (dynamic user entries for x fields)

Could someone advise me on how to handle the formatvalues? It works perfectly when I input 123, 456 directly.

Appreciate any help in advance!

javascriptsqljsonstorageweb-sql

Answer №1

One effective approach is to utilize JSON serialization to store user-provided object data for table columns instead of dynamically creating or altering them. By stringifying the object data upon insertion and parsing it during retrieval, you can simplify operations without modifying the table structure. If querying over specific columns is necessary, consider initializing those columns separately. This method closely resembles the functionality offered by IndexedDB.

Answer №2

/*array.append */

valuesToFormat = [];

valuesToFormat.append("456");

and many more examples!

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