I have a site built with Asp.Net mvc where I show a list of products and automatically fill in the default purchasing amount for those products in each corresponding input field.

However when i navigate to a different product catalog using the anchor tag the 'Changes may not be saved' alert pops up presumably because of the default values entered in the input fields.

Now I have tried to disable this alert using the following in my shared layout page inside of a script tag:

• window.onbeforeunload = null
• window.beforeunload = null

I have also tried various answers from similar questions but nothing seems to help.

Does anyone know how I can get rid of this alert? Thanks in advance.

I have a site built with Asp.Net mvc where I show a list of products and automatically fill in the default purchasing amount for those products in each corresponding input field.

However when i navigate to a different product catalog using the anchor tag the 'Changes may not be saved' alert pops up presumably because of the default values entered in the input fields.

Now I have tried to disable this alert using the following in my shared layout page inside of a script tag:

• window.onbeforeunload = null
• window.beforeunload = null

I have also tried various answers from similar questions but nothing seems to help.

Does anyone know how I can get rid of this alert? Thanks in advance.

• javascript
• jquery
• angular
• asp-mvc

Share Improve this question Follow asked May 18, 2021 at 9:05 KyllionKyllion 1111 silver badge33 bronze badges 2

• 6 That alert is not automatic, it es from your own code. – Jamiec Commented May 18, 2021 at 9:10
• This seems to have been the problem, apparantly a directive was added by a colleague to throw this alert. – Kyllion Commented May 18, 2021 at 9:30

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3 Answers 3

Sorted by: Reset to default 3

You may have more success using this for jQuery:

$(window).off('beforeunload');

You can also read about some of the caveats and potential pitfalls of the beforeunload event here.

Update:

Just to clarify a point further from a ment @Jamiec left, the event should be triggered in your project somewhere, try searching for beforeunload to see where it originates.

Using Jquery Try below code.

$(window).off('beforeunload');

This is best option for changes that you made may not be saved popup.

If you use javascript then you can use below code,

window.onbeforeunload = function () {return null;};

Apparantly the alert was being called from a directive created by a colleague, by disabling this directive the alert no longer appears.

Thanks to Jamiec for notifying me.