Per this answer, you can use HTML5's required attribute on a <select> if you give the default <option> an empty value attribute (among other ... ... <看更多>
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Per this answer, you can use HTML5's required attribute on a <select> if you give the default <option> an empty value attribute (among other ... ... <看更多>
Please visit http://technomark.in/Set-Default-Value-For-An-HTML-Select-Element.aspx for more information ... ... <看更多>
The form gets submitted without HTML5 validation(i.e it is not showing a popup that the field is required to the user while filling the form.) but server side ... ... <看更多>
When only using react, everything is like expected: The selectbox is rendered, with the option "Please select" as default value. ... <看更多>
Initial value that is selected if no other selection is made. The placeholder can also be specified as a data-placeholder attribute on the select or input ... ... <看更多>