用 onclick-event 替换搜索字段中的输入不会更新列表

Question

我有一个搜索字段可以过滤三个不同的列表。我想要一个onclick将文本添加到搜索字段并替换可能存在的任何其他值的事件。我可以这样做，但onclick不会更新列表，除非我单击搜索字段并手动按 Enter 键。添加click()事件没有帮助。同时，点击X搜索字段中的 来清除输入也不会更新列表。我能做些什么？<p onclick="document.getElementById('searchCombo').value = 'element 1'; document.getElementById('searchCombo').click()">Filter for: vitamins</p><p onclick="document.getElementById('searchCombo').value = 'element 2'; document.getElementById('searchCombo').click()">Filter for: drugs</p><p onclick="document.getElementById('searchCombo').value = 'element 3'; document.getElementById('searchCombo').click()">Filter for: medications</p><input type="search" id="searchCombo" placeholder="Search for combination..."><ul ID="list1" class="combo">    <li><a href="#">List 1 element 1</a></li>    <li><a href="#">List 1 element 2</a></li>    <li><a href="#">List 1 element 3</a></li>    <li class="none">Nothing found in this category</li></ul><ul ID="list2" class="combo">    <li><a href="#">List 2 element 1</a></li>    <li><a href="#">List 2 element 2</a></li>    <li><a href="#">List 2 element 3</a></li>    <li class="none">Nothing found in this category</li></ul><ul ID="list3" class="combo">    <li><a href="#">List 3 element 1</a></li>    <li><a href="#">List 3 element 2</a></li>    <li><a href="#">List 3 element 3</a></li>    <li class="none">Nothing found in this category</li></ul>这是 JavaScript：<script>    /* drug combo search */    const select_all = (selector, selectee = document) =>        Array.from(selectee.querySelectorAll(selector));    const hide_item = item => item.style.display = 'none';    const show_item = item => item.style.display = '';    const item_text = item => item.textContent.toLowerCase();    const compare = text => item => item_text(item).includes(text);    const has_class = class_name => item => item.className.includes(class_name);    const not_has_class = class_name => item => !has_class(class_name)(item);    };</script>

Answer 1

如果您对 HTML 有一定的灵活性，我的建议是：

我认为如果您不需要 a 标签，只要将 aclass="filter_to" data-filter_to_term="element 1"标签移至 p 标签即可。

const select_all = (selector, selectee = document) =>

  Array.from(selectee.querySelectorAll(selector));

const hide_item = item => item.style.display = 'none';

const show_item = item => item.style.display = '';

const item_text = item => item.textContent.toLowerCase();

const compare = text => item => item_text(item).includes(text);

const has_class = class_name => item => item.className.includes(class_name);

const not_has_class = class_name => item => !has_class(class_name)(item);

const filter_list = text => list => {

  let lis = select_all("li", list);

  let to_show = lis

    .filter(not_has_class('none'))

    .filter(compare(text));

  if (to_show.length === 0)

    to_show = lis.filter(has_class('none'));

  lis.forEach(hide_item);

  to_show.forEach(show_item);

};

const search_box = document.getElementById('searchCombo');

const filter = (text) =>

  select_all(".combo").forEach(

    filter_list((text || '').toLowerCase())

  );

const set_filter = (text) => {

  search_box.value = text;

  filter(text);

};

const onclick_filter_to = (event) => {

  event.preventDefault();

  set_filter(event.target.dataset.filter_to_term);

};

select_all(".filter_to").forEach(

  (element) => element.addEventListener("click", onclick_filter_to)

);

search_box.addEventListener("input", event => filter(event.target.value));

filter();

<p><a href="#" class="filter_to" data-filter_to_term="element 1">Filter for: vitamins</a></p>

<p><a href="#" class="filter_to" data-filter_to_term="element 2">Filter for: drugs</a></p>

<p><a href="#" class="filter_to" data-filter_to_term="element 3">Filter for: medications</a></p>

<input type="search" id="searchCombo" placeholder="Search for combination...">

<ul ID="list1" class="combo">

    <li><a href="#">List 1 element 1</a></li>

    <li><a href="#">List 1 element 2</a></li>

    <li><a href="#">List 1 element 3</a></li>

    <li class="none">Nothing found in this category</li>

</ul>

<ul ID="list2" class="combo">

    <li><a href="#">List 2 element 1</a></li>

    <li><a href="#">List 2 element 2</a></li>

    <li><a href="#">List 2 element 3</a></li>

    <li class="none">Nothing found in this category</li>

</ul>

<ul ID="list3" class="combo">

    <li><a href="#">List 3 element 1</a></li>

    <li><a href="#">List 3 element 2</a></li>

    <li><a href="#">List 3 element 3</a></li>

    <li class="none">Nothing found in this category</li>

</ul>

看起来用 input 替换 keyup 可能适用于 Chrome 中的取消 X 按钮（但我以前没有使用过）。

Answer 2

这是工作演示Jsbin 工作演示

超文本标记语言

<p id="filter1">Filter for: vitamins</p>

<p id="filter2">Filter for: drugs</p>

<p id="filter3">Filter for: medications</p>

<input type="search" id="searchCombo" placeholder="Search for combination...">

<ul ID="list1" class="combo">

    <li><a href="#">List 1 element 1</a></li>

    <li><a href="#">List 1 element 2</a></li>

    <li><a href="#">List 1 element 3</a></li>

    <li class="none">Nothing found in this category</li>

</ul>

<ul ID="list2" class="combo">

    <li><a href="#">List 2 element 1</a></li>

    <li><a href="#">List 2 element 2</a></li>

    <li><a href="#">List 2 element 3</a></li>

    <li class="none">Nothing found in this category</li>

</ul>

<ul ID="list3" class="combo">

    <li><a href="#">List 3 element 1</a></li>

    <li><a href="#">List 3 element 2</a></li>

    <li><a href="#">List 3 element 3</a></li>

    <li class="none">Nothing found in this category</li>

</ul> 

JS

const select_all = (selector, selectee = document) =>

Array.from(selectee.querySelectorAll(selector));

const hide_item = item => item.style.display = 'none';

const show_item = item => item.style.display = '';

const item_text = item => item.textContent.toLowerCase();

const compare = text => item => item_text(item).includes(text);

const has_class = class_name => item => item.className.includes(class_name);

const not_has_class = class_name => item => !has_class(class_name)(item);

const filter_list = text => list => {

    let lis = select_all("li", list);

    let to_show = lis

        .filter(not_has_class('none'))

        .filter(compare(text));

    if (to_show.length === 0)

        to_show = lis.filter(has_class('none'));

    lis.forEach(hide_item);

    to_show.forEach(show_item);

};

const filter = (value) =>

    select_all(".combo").forEach(

        filter_list((value || '').toLowerCase())

    );

const searchCombo = document.getElementById('searchCombo')

searchCombo.addEventListener("keyup", function(e) {

    filter(e.target.value)

});

//Trigger filter when search input field cancel is clicked

searchCombo.addEventListener("search", function(e) {

    filter('')

});

function trigger(value) {

    searchCombo.value = value;

    filter(value)

}

document.getElementById('filter1').addEventListener("click", function() {

    trigger('element 1')

});

document.getElementById('filter2').addEventListener("click", function() {

    trigger('element 2')

});

document.getElementById('filter3').addEventListener("click", function() {

    trigger('element 3')

});

filter();