Why Does My Internet Explorer JavaScript Only Work After Opening Developer Tools?

Internet Explorer: JavaScript Execution After Developer Tools Activation

In a peculiar occurrence, users have reported an issue with JavaScript functionality in Internet Explorer. Despite having a simple "enter password to download" function, the buttons on the web page remain unresponsive until the developer toolbar is opened using the F12 key.

This behavior stems from the presence of debugging code in the JavaScript, particularly references to the console object. In IE, the console object becomes active only when the developer toolbar is open. Prior to that, attempting to call the console object results in it being undefined. Once the toolbar is opened, the console object exists permanently, allowing console calls to execute successfully.

Solutions:

• Remove Console References: Examine your code and remove any references to console, as it should not be present in production code.
• Conditional Wrapping: Alternatively, wrap your console references within an if() statement or conditional that verifies the existence of the console object before attempting to call it. For example:

if (typeof console !== 'undefined') {
  console.log('Message');
}

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