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What you need is :required selector - it will select all fields with 'required' attribute (so no need to add any additional classes). Then - style inputs according to your needs. You can use ':after' selector and add asterisk in the way suggested among other answers. answered Dec 10, 2019 at 0:46.
3 Ιουν 2011 · When using the newer browsers that support HTML5 (FireFox 4 for example); and a form field has the attribute required='required'; and the form field is empty/blank; and the submit button is clicked...
24 Φεβ 2020 · Specify "required" keyword in one of the select statements. If you want to change the default way of its appearance. You can follow these steps. This is just for extra info if you have any intention to modify the default behavior. Add the following into you .css file. /* style all elements with a required attribute */ :required { background: red; }
Conceptually the correct idea (expressed in a typed language), is: HtmlAttribute attribute = new HtmlAttribute(); attribute.value = ""; element.attributes["required"] = attribute; This is why: getAttribute(name) setAttribute(name, value) exist. They do the work on assigning the value to the HtmlAttribute object inside.
The other answer that have no required and selected attributes in <option> element with required attribute in <select> element does not work or can't apply with CSS :invalid. – vee Commented Mar 31, 2022 at 7:25
30 Ιουλ 2010 · Why use optional fields is always better than required : An asterisk is obvious to you, not to everyone, believe me, there are always some who do not understand. The red asterisks make users more fearful, it increases the risk of errors and reduces the form completion rate. There are always more fields required than optional.
I've written a RequiredIfAttribute that requires a particular property value when a different property has a certain value (what you require) or when a different property has anything but a specific value. This is the code that may help: /// <summary>. /// Provides conditional validation based on related property value.
"My guess is the installer is just silently failing on this, hence no indication." The resulting PATH is a valid value for the environment variable; it just has a nonexistent directory at the end (it's not the responsibility of any tool in particular to check for this) and therefore the compiler isn't found.
14 Ιαν 2019 · Short answer. Using the required keyword when defining a class constructor like so: class Test {. final String x; Test({required this.x}); } means that you are required to include that parameter name and value when you create an object: final value = Test(x: 'hello'); In this case, including parameter x was required.
23 Μαΐ 2022 · Correct me if I'm wrong but, if ever I run the code in the browser and click the button without any value in the textbox it should have a tooltip showing that that field was required, shouldn't it? But nothing happens no matter how many times you click the button. Am I misunderstood on how to use the required attribute?
