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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.Chilkat AutoIt Downloads
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)