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Adds an Evaluate function.

Component Version macOS Windows Linux Server iOS SDK
JavaScript 10.0 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "JS.AddFileMakerEvaluateFunction"; JSRef; Name )   More


Parameter Description Example
JSRef The JavaScript reference number. $js
Name The name of the function. "test"


Returns OK or error.


Adds an Evaluate function.
The function will take string parameter and evaluate the result in FileMaker. Result is returned as text to JavaScript.

For increased security we prefer all FileMaker developers define their own function name, so if you get some foreign JavaScript, it can't know the function name and mess with FileMaker.


Evaluate something with FileMaker in JavaScript:

Set Variable [ $js ; Value: MBS( "JS.New" ) ]
Set Variable [ $r ; Value: MBS( "JS.AddFileMakerEvaluateFunction"; $js; "FMEval") ]
Show Custom Dialog [ "Result" ; MBS( "JS.Evaluate"; $JS; " \"got AccountName: \" + FMEval(\"Get(AccountName)\")" ) ]
Set Variable [ $r ; Value: MBS( "JS.Release"; $JS ) ]

Create a JavaScript Environment with a FMEval function:

Set Variable [ $$JS ; Value: MBS("JS.New") ]
Set Variable [ $r ; Value: MBS( "JS.AddFileMakerEvaluateFunction"; $$js; "FMEval") ]

See also

Example Databases

Blog Entries

This function checks for a license.

Created 7th December 2019, last changed 13th June 2021

IsWindows - JS.AddFileMakerRunScriptFunction