但是,我有一个< select>我希望用户可以选择的产品.当他们选择其中一个产品时,另一个< select>仅当产品具有一个或多个型号时,才会填充,启用和要求产品型号.否则,禁用并清空模型选择.
虽然我喜欢认为我的代码是完美的,但我可以做到这样,模型下拉列表永远不会被禁用并且同时需要,我并不完美.那么,表格是否能够通过< select>提交.那是禁用和必需的？
更新
来自w3.org：
Constraint validation: If the element is required,and its value IDL attribute applies and is in the mode value,and the element is mutable,and the element’s value is the empty string,then the element is suffering from being missing.
查看具体的“可变”意味着什么.
A form control can be designated as mutable.
Note: This determines (by means of definitions and requirements in this specification that rely on whether an element is so designated) whether or not the user can modify the value or checkedness of a form control,or whether or not a control can be automatically prefilled.
选择没有值,因此它由它的选项决定.
The select element does not have a value; the selectedness of its option elements is what is used instead.
所以,我认为这意味着如果< select>元素被禁用和要求,表格可以被视为有效吗？
解决方法
Constraint validation: If an element is disabled,it is barred from constraint validation.
http://www.w3.org/TR/html5/forms.html#barred-from-constraint-validation：
A submittable element is a candidate for constraint validation except when a condition has barred the element from constraint validation.
最后,从约束验证步骤列表http://www.w3.org/TR/html5/forms.html#constraint-validation：
3.1: If field is not a candidate for constraint validation,then move on to the next element.
这意味着,当检查表单有效性时,禁用的元素将被“传递”.
它不会触发任何错误,并且对其所属表单的验证状态没有任何影响.
