<button> type attribute with "submit" value is removed

[dang-le]

From changelog v2.7.0 - September 24, 2019, the type attribute with "submit" is considered redundant and automatically removed. This will cause an issue because it's rendered differently for Microsoft Edge.

We should always specify the type attribute for the button. The default type for Microsoft Edge is "button", while in other browsers (and in the W3C specification) it is "submit". Thank you.

Site Reference: https://www.w3schools.com/jsref/prop_pushbutton_type.asp#:~:text=The%20default%20type%20for%20Internet,)%20it%20is%20%22submit%22.

Changelog v2.7.0 - September 24, 2019: https://github.com/Taritsyn/WebMarkupMin/blob/master/CHANGELOG.md#v270---september-24-2019

[Taritsyn]

Hello, Dang!

The default type for Microsoft Edge is "button", while in other browsers (and in the W3C specification) it is "submit".

Just now I checked this behavior for Internet Explorer 11 and Microsoft Edge 114.0.1823.67, the default value is submit.

You can prevent the removing of this attribute by using the following settings:

new HtmlMinificationSettings()
{
    …
    PreservableAttributeList= "button[type]",
    …
}