@mdui/jq/methods/utils/dir.js

拥有和 jQuery 相似 API 的轻量级 JavaScript 工具库

import { $ } from '../../$.js';
import { unique } from '../../functions/unique.js';
import { JQ } from '../../shared/core.js';
import { isElement } from '../../shared/helper.js';
import '../each.js';
import '../is.js';
export const dir = ($elements, nameIndex, node, 
// eslint-disable-next-line @typescript-eslint/no-explicit-any
selector, filter) => {
    const ret = [];
    let target;
    $elements.each((_, element) => {
        target = element[node];
        // 不能包含最顶层的 document 元素
        while (target && isElement(target)) {
            // prevUntil, nextUntil, parentsUntil
            if (nameIndex === 2) {
                if (selector && $(target).is(selector)) {
                    break;
                }
                if (!filter || $(target).is(filter)) {
                    ret.push(target);
                }
            }
            // prev, next, parent
            else if (nameIndex === 0) {
                if (!selector || $(target).is(selector)) {
                    ret.push(target);
                }
                break;
            }
            // prevAll, nextAll, parents
            else {
                if (!selector || $(target).is(selector)) {
                    ret.push(target);
                }
            }
            target = target[node];
        }
    });
    return new JQ(unique(ret));
};