InDesign启动脚本缓存问题：如何添加启动时刷新机制？

I totally get the frustration—InDesign's script caching can be a real pain when you're tweaking startup scripts and your changes just won't stick. Let's break down why window.update() didn't work and walk through practical solutions to force InDesign to pick up your modified scripts.

Why window.update() Failed #

First off, that error makes perfect sense: when startup scripts run during InDesign's boot process, the application's UI (including the window object) hasn't fully initialized yet. window.update() is a UI-specific method that only works once the interface is up and running, so it's useless here.

Solutions to Bypass Script Cache #

1. Manually Clear InDesign's Script Cache #

If you just need a quick fix for debugging, manually deleting the cache files will force InDesign to reload all scripts from scratch:

• Windows: Navigate to %APPDATA%\Adobe\InDesign\[Your InDesign Version]\[Language]\Caches and delete files related to script caching (look for names like ScriptCache or similar).
• macOS: Go to ~/Library/Caches/Adobe/InDesign/[Your InDesign Version]/[Language] and delete the script cache files here.

Restart InDesign after deleting these files, and your modified script should load correctly.

2. Force Reload Your Script Programmatically #

For a more automated approach, you can add logic to your startup script to check if the file has been modified, then reload it if needed. Here's a JavaScript example:

// Get the current script file
var currentScript = new File($.fileName);

// Check persistent storage for the last modified timestamp
var lastModifiedTimestamp = app.persistentData.getValue("MyScript_LastModified");
var currentModDate = currentScript.modificationDate;

// If no timestamp exists, or the script has been updated
if (!lastModifiedTimestamp || new Date(lastModifiedTimestamp) < currentModDate) {
    // Reload the script
    app.doScript(currentScript, ScriptLanguage.JAVASCRIPT);
    
    // Update the persistent timestamp
    app.persistentData.setValue("MyScript_LastModified", currentModDate.toString());
}

This uses InDesign's persistentData to track when the script was last loaded. If the file's modification date is newer, it reloads the script, bypassing the cache.

3. Unload and Re-register the Startup Script #

If your script is registered as a formal startup script, you can explicitly remove the old version and load the new one:

// Target your specific script by name
var targetScriptName = "MyCustomStartupScript.jsx";

// Remove existing registered instance
var startupScripts = app.startupScripts;
for (var i = startupScripts.length - 1; i >= 0; i--) {
    if (startupScripts[i].name === targetScriptName) {
        startupScripts[i].remove();
        break;
    }
}

// Reload the updated script
var scriptPath = new File("~/Library/Preferences/Adobe InDesign/[Your Version]/[Language]/Startup Scripts/" + targetScriptName);
if (scriptPath.exists) {
    app.doScript(scriptPath, ScriptLanguage.JAVASCRIPT);
}

Make sure to update the file path to match your system's Startup Scripts location.

4. Temporary Filename Change (Quick Debugging Hack) #

InDesign caches scripts by filename, so a quick way to test changes is to rename your modified script (e.g., add a _v2 suffix) and place it in the Startup Scripts folder. InDesign will treat this as a new script and load it instead of the cached version. Once you're done debugging, you can revert to the original filename.

Final Notes #

For long-term use, the programmatic reload (solution 2) is the most reliable—it ensures your script always loads the latest version without manual intervention. Just remember to remove the reload logic once you're done developing, or add a flag to disable it in production.

内容的提问来源于stack exchange，提问作者Interactive