[英]How to append child of child in javascript?
我有一個名為post
的類的 div,我正在遍歷后端的帖子列表,我想在前端顯示這些帖子。
我的要求是,我首先要創建一個空的 div 並將所有創建的元素附加到該 div 中,然后最后將該 div 推送到 <div class = 'post' 中。 但出於某種原因,它給了我一個錯誤,說appendChild is not a function
。 如果我可以僅通過 javascript 將這個空的 div 元素轉換為如下所示,那就太好了。 因為我想為我的每個帖子設置樣式,所以我將它們包裝在一個 div 中。
編輯:下面是我嘗試過的 javascript 代碼
for (let i = 0; i < paginatedItems.length; i++) {
let post_wrapper = document.createElement('div');
let post_element = document.querySelector('.post');
let hr = document.createElement('hr');
// Title of the blog
let title_element = document.createElement('h2')
title_element.classList.add('mt-4');
title_element.innerHTML = paginatedItems[i].title;
post_element.appendChild(title_element);
// Image of the Blog
let image_element = document.createElement('img');
image_element.classList.add('img-fluid');
image_element.classList.add('rounded');
image_element.style.width = '672'
image_element.style.height = '372'
image_element.src = paginatedItems[i].featured_image;
post_element.appendChild(image_element);
// Author Element
let author_element = document.createElement('p');
author_element.classList.add('lead');
author_element.innerHTML = 'By ';
let author_link = document.createElement('a')
author_link.innerHTML = paginatedItems[i].author.name;
author_link.href = 'google.com'
author_element.appendChild(author_link);
author_link.appendChild(hr);
post_element.appendChild(author_element);
// // Date Element
let date_element = document.createElement('p');
date_element.classList.add('item');
date_element.innerHTML = `Posted ${timeSince(paginatedItems[i].date)} ago`;
post_element.appendChild(date_element);
date_element.appendChild(hr);
// Description Element
let description_element = document.createElement('p');
description_element.classList.add('item');
description_element.innerHTML = paginatedItems[i].content.substr(0, 300) + '....';
post_element.appendChild(description_element);
// Show more button
let input_button = document.createElement('a')
input_button.classList.add('btn-primary');
input_button.classList.add('btn');
input_button.textContent = "Show more..";
input_button.addEventListener('click',
function () {
RenderPost(paginatedItems[i].ID);
}
)
console.log(post_element);
post_wrapper.appendChild(post_element);
post_element.appendChild(input_button);
}
你必須使用 forEach 方法。 這是一個例子:
const postsArray = [{title: 'miaw', id: 123324}, {title: 'hello', id: 983745}];
// the dom div you want to append to.
const myDiv = document.getElementById('[yourDivId]');
postsArray.forEach(post=>{
// creating the post
var div = document.createElement('div');
var title = document.createElement('h1');
var id = document.createElement('h4');
title.textContent = post.title;
id.textContent = post.id;
// appending the elements to a div
div.append(title, id);
// then appending the post to your div
myDiv.appendChild(div);
});
通過 id 獲取元素為我修復它是最終的工作代碼片段
let post_element = document.querySelector('#posts');
for (let i = 0; i < paginatedItems.length; i++) {
let post_wrapper = document.createElement('div');
let hr = document.createElement('hr');
// Title of the blog
let title_element = document.createElement('h2')
title_element.classList.add('mt-4');
title_element.innerHTML = paginatedItems[i].title;
post_wrapper.appendChild(title_element);
// Image of the Blog
let image_element = document.createElement('img');
image_element.classList.add('img-fluid');
image_element.classList.add('rounded');
image_element.style.width = '672'
image_element.style.height = '372'
image_element.src = paginatedItems[i].featured_image;
post_wrapper.appendChild(image_element);
post_element.appendChild(post_wrapper);
}
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