如何在JavaScript中动态创建新的div,更改它,移动它,以各种可能的方式修改它? [英] How to create new div dynamically, change it, move it, modify it in every way possible, in JavaScript?

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问题描述

我想在页面加载时创建新的div。这些div将显示为一个有序组,它根据JSON文件中的外部数据而变化。我需要使用for循环执行此操作,因为需要超过100个div。

I want to create new divs as the page loads. These divs will appear as an ordered group which changes depending upon external data from a JSON file. I will need to do this with a for loop because there are over 100 divs needed.

因此,我需要能够根据高度更改每个创建的div,宽度,顶部/左侧等。然而, document.getElementById(created_div)。style.whatever 什么都不做,我甚至看不到一个新的div出现。我将新div的高度/宽度设置为500px,背景设置为红色,依此类推,但没有新的div肯定会出现。

So, I need to be able to change each created div in regards to height, width, top/left and so on. Yet, document.getElementById("created_div").style.whatever does nothing, I can't even see a single new div appear. I've set the new divs height/width to 500px, background to "red", and so on, but no new divs are definitely appearing.

我在做什么错误?

推荐答案


  • 创建 var div = document.createElement('div');

  • 添加 document.body.appendChild(div) ;

  • 样式处理

    • 定位 div.style.left ='32px'; div.style .top =' - 16px';

    • div.className ='ui-modal';

      • Creation var div = document.createElement('div');
      • Addition document.body.appendChild(div);
      • Style manipulation
        • Positioning div.style.left = '32px'; div.style.top = '-16px';
        • Classes div.className = 'ui-modal';
          • ID div.id = 'test';
          • contents (using HTML) div.innerHTML = '<span class="msg">Hello world.</span>';
          • contents (using text) div.textContent = 'Hello world.';
          • by ID div = document.getElementById('test');
          • by tags array = document.getElementsByTagName('div');
          • by class array = document.getElementsByClassName('ui-modal');
          • by CSS selector (single) div = document.querySelector('div #test .ui-modal');
          • by CSS selector (multi) array = document.querySelectorAll('div');
          • children node = div.childNodes[i];
          • sibling node = div.nextSibling;

          • 儿童 element = div.children [i];

          • 同级 element = div.nextElementSibling;

          • children element = div.children[i];
          • sibling element = div.nextElementSibling;

          这涵盖了DOM操作的基础知识。请记住,新创建的节点在文档中可见,需要向正文添加元素或包含主体的节点。

          This covers the basics of DOM manipulation. Remember, element addition to the body or a body-contained node is required for the newly created node to be visible within the document.

          这篇关于如何在JavaScript中动态创建新的div,更改它,移动它,以各种可能的方式修改它?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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