HTML Field Set Element
DOM fieldset elements expose the HTMLFieldSetElement (HTML 4 HTMLFieldSetElement) interface, which provides special properties and methods (beyond the regular element object interface they also have available to them by inheritance) for manipulating the layout and presentation of field-set elements.
属性
以下属性除了 form 都是在 HTML5 中新添加的.
| 名称 | 类型 | 描述 |
|---|---|---|
disabled |
Boolean |
读取HTML属性 disabled,表明用户是否可以操作该控件. |
elements |
readonly HTMLFormControlsCollection |
The elements belonging to this field set. |
form |
readonly HTMLFormElement |
The containing form element, if this element is in a form. Otherwise, the element the name content attribute points to HTML5. (null in HTML 4.) |
name |
DOMString |
Reflects the name HTML attribute, containing the name of the field set, used for submitting the form. |
type |
readonly DOMString |
一定为字符串fieldset. |
validationMessage |
readonly DOMString |
A localized message that describes the validation constraints that the element does not satisfy (if any). This is the empty string if the element is not a candidate for constraint validation (willValidate is false), or it satisfies its constraints. |
validity |
readonly ValidityState |
The validity states that this element is in. |
willValidate |
boolean |
Always false because fieldset objects are never candidates for constraint validation. |
方法
| 名称 & 参数 | 返回值 | 描述 |
|---|---|---|
checkValidity() |
Boolean |
如果元素的值没有有效性问题,则返回true,否则返回false并触发invalid事件. |
setCustomValidity(in DOMString error) |
void |
设置一个自定义错误,则该元素将无法通过有效性验证.参数指定的字符串就是在向用户报告错误时显示的消息.如果为空字符串,则清除这个自定义错误. |