PowerShell

Eval JavaScript Returning Int

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Demonstrates getting the completion value of a JavaScript that returns an integer. PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

# This example demonstrates getting the completion value of a script,
# where the last evaluated expression is an integer.

# The Javascript run in this example is shown below.

# Load the JavaScript from a file.
$sbScript = New-Object Chilkat.StringBuilder
$success = $sbScript.LoadFile("js_eval_return_int.js","utf-8")
if ($success -eq $false) {
    $($sbScript.LastErrorText)
    exit
}

$js = New-Object Chilkat.Js
$result = New-Object Chilkat.JsonObject

# Run the JavaScript
# Eval returns the completion value of the script. This is generally the value of the last evaluated expression.
# In this case, the last evaluated expression is an int.
$success = $js.Eval($sbScript,$result)
if ($success -eq $false) {
    $($sbScript.LastErrorText)
    exit
}

$result.EmitCompact = $false
$($result.Emit())

# Output:

# {
#   "type": "int",
#   "value": 42
# }