如何将数组分成4列,并将数组中的每列传递给10个
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  • huangapple go评论111阅读模式
    英文:

    How to separate array into 4 columns and pass to each column 10 <li> items from array?

    问题

    让我们假设有一个包含40个元素的动态数组(数组随时间不变,但在每次渲染时发生变化)。我想要做的是遍历这个数组并返回4个<div>元素,每个元素包含10个<li>元素(这些元素来自我的数组),其中数组中的每个对象都不重复。如何使用JavaScript实现这个目标?

    我想要使用一个父级flex容器样式化数组中的对象,其中包含4个<div>元素,这4个<div>元素的flex属性为25%,并且<li>元素是这4个<div>的子元素。就像这个示例中的方式:w3c。但是我的图片不是静态的,所以无法为每个元素定义样式。

    英文:

    Lets say there is an dynamic array containing 40 elements (array doesn't change over time, but changes on every render). What I want to do is, loop through this array and return 4 <div> elements, each containing 10 li elements (which are objects from my array), where none object from array is repeated. How to achieve that with JavaScript ?

    I wanted to style objects from array with one parent flex container, containing 4 div elements with flex: 25%, and li elements being children of that 4 divs. Like in this example: w3c.
    But my images are not static so I can't define each element with typing

    答案1

    得分: 1

    使用JavaScript,您可以像这样操作。

    var myArray = [];
    var i = 0;
    for(i=0;i<40;i++){
      myArray.push("Element "+i);
    }
    
    var obj = document.getElementById("temp_main");
    counter = 10;
    firstElement = true;
    output = '';
    
    for(i=0;i<40;i++){
      var temp = '<div class="row">' + myArray[i] + '</div>';
      if(counter>=10){
        temp = '<div class="column">' + temp;
        if( !firstElement ) temp = '</div>' +  temp;
        counter = 0;
      }
      output += temp;
      firstElement = false;
      counter++;
    }
    
    output += '</div>'; //closing last column
    obj.innerHTML = output;
    
    .row{
      display:block;
      box-sizing:border-box;
      padding:10;
      padding-right:5;
      width:100%;
    }
    
    .column{
      display:block;
      box-sizing:border-box;
      padding:0px;
      width:25%;
      border:1px red solid;
      float:left;
      clear:none;
    }
    
    #temp_main{
      display:block;
      width:100%;
    }
    
    <div id="temp_main">
    </div>
    

    希望这有所帮助!

    英文:

    Using javascript you can do something like this.

    <!-- begin snippet: js hide: false console: true babel: false -->

    <!-- language: lang-js -->

    var myArray = [];
    var i = 0;
    for(i=0;i&lt;40;i++){
      myArray.push(&quot;Element &quot;+i);
    }
    
    var obj = document.getElementById(&quot;temp_main&quot;);
    counter = 10;
    firstElement = true;
    output = &#39;&#39;;
    
    for(i=0;i&lt;40;i++){
      var temp = &#39;&lt;div class=&quot;row&quot;&gt;&#39; + myArray[i] + &#39;&lt;/div&gt;&#39;;
      if(counter&gt;=10){
        temp = &#39;&lt;div class=&quot;column&quot;&gt;&#39; + temp;
        if( !firstElement ) temp = &#39;&lt;/div&gt;&#39; +  temp;
        counter = 0;
      }
      output += temp;
      firstElement = false;
      counter++;
    }
    
    output += &#39;&lt;/div&gt;&#39;; //closing last column
    obj.innerHTML = output;
    

    <!-- language: lang-css -->

    .row{
      display:block;
      box-sizing:border-box;
      padding:10;
      padding-right:5;
      width:100%;
    }
    
    .column{
      display:block;
      box-sizing:border-box;
      padding:0px;
      width:25%;
      border:1px red solid;
      float:left;
      clear:none;
    }
    
    #temp_main{
      display:block;
      width:100%;
    }
    

    <!-- language: lang-html -->

    &lt;div id=&quot;temp_main&quot;&gt;
    
    &lt;/div&gt;
    

    <!-- end snippet -->

    I hope this helps!

    huangapple
    • 本文由 发表于 2023年8月5日 16:47:55
    • 转载请务必保留本文链接:https://go.coder-hub.com/76840842.html
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