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javascriptregexodatadynamics-crm

Prevent Javascript from replacing beginning of string with NaN?

I am work on some OData query calls to Microsoft CRM and need my query in a very specific format.I am passing parameters to a function which then adds the URL to my query. What I am passing my retrieve function is as follows:

 webAPI.REST.retrieveEntity(
        "EntityDefinition",
        id,
        + "/Attributes(LogicalName='" + logicalAttribute + "')"
        + "/Microsoft.Dynamics.CRM.PicklistAttributeMetadata"
        + "?$select=LogicalName&$expand=OptionSet"
        , null)

In debugging my parameter with the query options is:

"NaNmylogicalattribute')/Microsoft.Dynamics.CRM.PicklistAttributeMetadata?$select=LogicalName&$expand=OptionSet"

As you can see, my "/Attributes(LogicalName=" was replaced with "NaN". How do I prevent this from occurring?

Solution

  • Here is the problem:

    id,
+ "/Attributes(LogicalName='" + logicalAttribute + "')"

    Since you aren't starting with a String, the leading + is coercing your String into a Number (it isn't a Number, hence NaN). Just remove that first leading + and it will work:

    id,
"/Attributes(LogicalName='" + logicalAttribute + "')"