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Prevent JavaScript Infinite Loops

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Demonstrates how prevent infinite loops or prevent the JavaScript from running for a longer amount of time than allowed.

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Local $bSuccess = False

; This is the JavaScript we'll run:

; console.log('Starting infinite loop...'); while(true) {};

$oSbScript = ObjCreate("Chilkat.StringBuilder")
$oSbScript.Append("console.log('Starting infinite loop...'); while(true) {};")

$oJs = ObjCreate("Chilkat.Js")

; Set a limit on the amount of time (in seconds) the script is allowed to run.
; If the JavaScript takes longer than this amount of time, then Chilkat kills the script without crashing the host program.
; The default value of TimeoutSeconds is 0, which indicates no limit.
; For this example, set a limit of 2 seconds.
$oJs.TimeoutSeconds = 2

$oResult = ObjCreate("Chilkat.JsonObject")
$oResult.EmitCompact = False

; Run the script..
$bSuccess = $oJs.Eval($oSbScript,$oResult)
If ($bSuccess = False) Then
    ; Examine the result for an exception.
    ConsoleWrite($oResult.Emit() & @CRLF)

    ; The result contains this:

    ; 	{
    ; 	  "exception": {
    ; 	    "message": "interrupted - JavaScript exceeded the Chilkat.Js.TimeoutSeconds",
    ; 	    "stack": [
    ; 	      {
    ; 	        "func": "<eval>",
    ; 	        "file": "<input>",
    ; 	        "line": 1,
    ; 	        "col": 8
    ; 	      }
    ; 	    ]
    ; 	  }
    ; 	}

    ; Also examine the LastErrorText.
    ConsoleWrite($oJs.LastErrorText & @CRLF)
    Exit
EndIf

; We should never get here..
ConsoleWrite("Succeeded." & @CRLF)
ConsoleWrite($oResult.Emit() & @CRLF)