iter: d17 表单错误态覆盖包裹式控件 + 校验时机事件
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@@ -26,7 +26,13 @@ export function formItem(props: FormItemProps, control: HTMLElement): FormItemHa
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const label = h('label', { class: 'ua-form-label' }, props.label, props.required ? h('i', { class: 'ua-form-req' }, '*') : null);
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const el = h('div', { class: 'ua-form-item' }, label, h('div', { class: 'ua-form-control' }, control, error));
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/*** 执行全部规则:返回首个错误消息,同时同步错误区与控件态 ***/
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/*** 错误态落点:控件根 + 内部原生控件,保证 select / checkbox 这类包裹式控件也能标红 ***/
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const marked = (): HTMLElement[] => [
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control,
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...Array.from(control.querySelectorAll<HTMLElement>('input, textarea, select, .ua-select-trigger')),
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];
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/*** 执行全部规则:返回首个错误消息,同时同步错误区、控件态与 aria-invalid ***/
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const validate = () => {
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const value = props.value();
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let msg: string | null = null;
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@@ -36,14 +42,18 @@ export function formItem(props: FormItemProps, control: HTMLElement): FormItemHa
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}
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error.textContent = msg ?? '';
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control.classList.toggle('ua-invalid', !!msg);
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for (const node of marked()) node.setAttribute('aria-invalid', String(!!msg)); // 读屏同步错误态
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return msg;
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};
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control.addEventListener('input', () => {
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if (mode === 'input' || error.textContent) validate(); // input 模式即时校验;其余模式仅清已报错误
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});
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control.addEventListener('blur', () => {
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if (mode !== 'submit') validate();
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control.addEventListener('change', () => {
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if (mode === 'input') validate(); // select / checkbox / radio 变更即校验(原生 input 事件不冒泡)
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});
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control.addEventListener('focusout', () => {
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if (mode !== 'submit') validate(); // 用会冒泡的 focusout 取代 blur,包裹式控件同样生效
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});
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return { el, validate };
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}
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