自定义javascript分页

问题描述

我是一名新的网络开发人员，正在开发一个报价网站。该网站的主要目的是为访问者提供报价。该网站非常动态，只需一个按钮即可复制报价。

那么现在让我们谈谈我的查询。

所以现在认为下面的十句话是我网站的十个引号

The cat is better than a dog.

Google is an open-source library.

Cats are better than ferrets.

love books.

Life is short make it possible.

The cat is better than a dog.

Google is an open-source library.

Cats are better than ferrets.

love books.

Life is short make it possible.

我需要一个 javascript，我可以在其中简单地编写这些引号，并且它应该以这种格式显示在 HTML 中。简而言之，每个引用都应按如下所示放置。格式

<div>
<p>The quote should come here</p>
</div>

每个引用都应包含上述所有元素。

我是 javascript 的初学者，所以我不太熟悉它。虽然我的朋友给了我一个 javascript，但我没想到。

供参考我的朋友分别是Javascript和Html。

const resultEl = document.querySelector('.allquotes');
const pageSize = document.querySelector('select[name="page-size"]');
const pageCurr = document.querySelector('input[name="page-curr"]')
const resultCount = document.querySelector('.result-count')
const pageNoCurr = document.querySelector('.page-no-curr');
const pageNoCount = document.querySelector('.page-no-count')
const btnFirst = document.querySelector('.page-btn-first');
const btnPrev = document.querySelector('.page-btn-prev');
const btnNext = document.querySelector('.page-btn-next');
const btnLast = document.querySelector('.page-btn-last');

let results = [];

const getResultCount = () => results.length;
const getPageSize = () => +pageSize.value;
const getCurrPage = () => +pageCurr.value;
const getPageCount = () => Math.ceil(getResultCount() / getPageSize());

const pageResponse = (records,pageSize,page) =>
  (start => records.slice(start,Math.min(records.length,start + pageSize)))
  (pageSize * (page - 1));

const main = async () => {
  btnFirst.addEventListener('click',navFirst);
  btnPrev.addEventListener('click',navPrev);
  btnNext.addEventListener('click',navNext);
  btnLast.addEventListener('click',navLast);
  pageSize.addEventListener('change',changeCount);
  
  results = retrieveAllStatuses();
  updatePager(results);
  redraw();
};
const redraw = () => {
  resultEl.innerHTML = '';
  const paged = pageResponse(results,getPageSize(),getCurrPage());
  const ul = document.createElement('ul');
  paged.forEach(record => {
    const li = document.createElement('p');
    li.textContent = JSON.stringify(record.quotes);
    ul.append(li);
  });
  resultEl.append(ul);
};

const navFirst = (e) => {
  pageNoCurr.textContent = 1;
  pageCurr.value = 1;
  redraw();
}

const navPrev = (e) => {
  const pages = getPageCount();
  const curr = getCurrPage();
  const prevPage = curr > 1 ? curr - 1 : curr;
  pageCurr.value = prevPage;
  pageNoCurr.textContent = prevPage;
  redraw();
}

const navNext = (e) => {
  const pages = getPageCount();
  const curr = getCurrPage();
  const nextPage = curr < pages ? curr + 1 : curr;
  pageCurr.value = nextPage;
  pageNoCurr.textContent = nextPage;
  redraw();
}

const navLast = (e) => {
  pageNoCurr.textContent = getPageCount();
  pageCurr.value = getPageCount();
  redraw();
}

const changeCount = () => {
  updatePager();
  redraw();
};

const updatePager = () => {
  const count = getPageCount();
  const curr = getCurrPage();
  pageCurr.value = curr > count ? 1 : curr;
  pageNoCurr.textContent = curr > count ? 1 : curr;
  pageNoCount.textContent = count;
  resultCount.textContent = getResultCount();
};

const retrieveAllQuotes = () => [
  { quotes: "The cat is better than dog." },{ quotes: "Google is a open source library."},{ quotes: "Cats are better than ferrets." },{ quotes: "love books." },{ quotes: "Life is short make it possible." },{ quotes: "The cat is better than dog" },];

main();

  <div class="allsquotes"></div> <div class="pagable-status">
    <label>Page <span class="page-no-curr">1</span> of <span class="page-no-count">1</span></label>
    <div class="pagable-actions">
      <button class="page-btn-first">&#x226A;</button>
      <button class="page-btn-prev">&#60;</button>
      <input type="number" name="page-curr" min="1" value="1" />
      <button class="page-btn-next">&#62;</button>
      <button class="page-btn-last">&#x226B;</button>
      <select name="page-size">
        <option>5</option>
        <option>10</option>
        <option>20</option>
      </select>
    </div>
    <label>(<span class="result-count"></span> items)</label>
  </div>
</div>

解决方法

retrieveAllQuotes() 应该是 retrieveAllQuotes()。您也可以在 redraw 中使用以下内容来使用您指定的格式。

const contents = document.createElement('div');
contents.innerHTML = paged.map(record => `<div><p>${record.quotes}</p></div>`).join('');
resultEl.append(contents);

这是一个例子：

const resultEl = document.querySelector('.allquotes');
const pageSize = document.querySelector('select[name="page-size"]');
const pageCurr = document.querySelector('input[name="page-curr"]')
const resultCount = document.querySelector('.result-count')
const pageNoCurr = document.querySelector('.page-no-curr');
const pageNoCount = document.querySelector('.page-no-count')
const btnFirst = document.querySelector('.page-btn-first');
const btnPrev = document.querySelector('.page-btn-prev');
const btnNext = document.querySelector('.page-btn-next');
const btnLast = document.querySelector('.page-btn-last');

let results = [];

const getResultCount = () => results.length;
const getPageSize = () => +pageSize.value;
const getCurrPage = () => +pageCurr.value;
const getPageCount = () => Math.ceil(getResultCount() / getPageSize());

const pageResponse = (records,pageSize,page) =>
  (start => records.slice(start,Math.min(records.length,start + pageSize)))
  (pageSize * (page - 1));

const main = async() => {
  btnFirst.addEventListener('click',navFirst);
  btnPrev.addEventListener('click',navPrev);
  btnNext.addEventListener('click',navNext);
  btnLast.addEventListener('click',navLast);
  pageSize.addEventListener('change',changeCount);

  results = await retrieveAllQuotes();
  updatePager(results);
  redraw();
};
const redraw = () => {
  resultEl.innerHTML = '';
  const paged = pageResponse(results,getPageSize(),getCurrPage());
  const contents = document.createElement('div');
  contents.innerHTML = paged.map(record => `<div><p>${record.quotes}</p></div>`).join('');
  resultEl.append(contents);
};

const navFirst = (e) => {
  pageNoCurr.textContent = 1;
  pageCurr.value = 1;
  redraw();
}

const navPrev = (e) => {
  const pages = getPageCount();
  const curr = getCurrPage();
  const prevPage = curr > 1 ? curr - 1 : curr;
  pageCurr.value = prevPage;
  pageNoCurr.textContent = prevPage;
  redraw();
}

const navNext = (e) => {
  const pages = getPageCount();
  const curr = getCurrPage();
  const nextPage = curr < pages ? curr + 1 : curr;
  pageCurr.value = nextPage;
  pageNoCurr.textContent = nextPage;
  redraw();
}

const navLast = (e) => {
  pageNoCurr.textContent = getPageCount();
  pageCurr.value = getPageCount();
  redraw();
}

const changeCount = () => {
  updatePager();
  redraw();
};

const updatePager = () => {
  const count = getPageCount();
  const curr = getCurrPage();
  pageCurr.value = curr > count ? 1 : curr;
  pageNoCurr.textContent = curr > count ? 1 : curr;
  pageNoCount.textContent = count;
  resultCount.textContent = getResultCount();
};

const retrieveAllQuotes = async function() {

  // write your asynchronous fetching here

  return [{
      quotes: "1The cat is better than dog."
    },{
      quotes: "2Google is a open source library."
    },{
      quotes: "3Cats are better than ferrets."
    },{
      quotes: "4Love books."
    },{
      quotes: "5Life is short make it possible."
    },{
      quotes: "6The cat is better than dog"
    },{
      quotes: "7Google is a open source library."
    },{
      quotes: "8Cats are better than ferrets."
    },{
      quotes: "9Love books."
    },{
      quotes: "10Life is short make it possible."
    },];
}
main();

<div class="allquotes"></div>
<div class="pagable-status">
  <label>Page <span class="page-no-curr">1</span> of <span class="page-no-count">1</span></label>
  <div class="pagable-actions">
    <button class="page-btn-first">&#x226A;</button>
    <button class="page-btn-prev">&#60;</button>
    <input type="number" name="page-curr" min="1" value="1" />
    <button class="page-btn-next">&#62;</button>
    <button class="page-btn-last">&#x226B;</button>
    <select name="page-size">
      <option>5</option>
      <option>10</option>
      <option>20</option>
    </select>
  </div>
  <label>(<span class="result-count"></span> items)</label>
</div>

dynamic-html dynamic-programming html javascript scripting