html - 找不到 SVG 标记 ID

Question

我有一个网络阻止列表。这个 web 块有每个 div，下面有我根据发送的 Id 显示的代码。

这些是每个 div 的代码：

分区 1

 <svg width='200' height='176'>
      <defs>
        <marker id='arrowThree' markerWidth='10' markerHeight='10' refX='0' refY='3' orient='auto' markerUnits='strokeWidth'>
          <path d='M0,0 L0,6 L9,3 z' fill='#000' />
        </marker>
      </defs>
      <line x1='185' y1='5' x2='185' y2='140' stroke='#000' stroke-width='3' marker-end='url(#arrowThree)' />
      <line x1='178' y1='160' x2='27' y2='25' stroke='#000' stroke-width='3' marker-end='url(#arrowThree)' />
      <line x1='10' y1='20' x2='10' y2='140' stroke='#000' stroke-width='3' marker-end='url(#arrowThree)' />
    </svg>

分区 2

  <svg width='200' height='118'>
      <defs>
        <marker id='arrowTwo' markerWidth='10' markerHeight='10' refX='0' refY='3' orient='auto' markerUnits='strokeWidth'>
          <path d='M0,0 L0,6 L9,3 z' fill='#000' />
        </marker>
      </defs>
      <line x1='185' y1='5' x2='185' y2='82' stroke='#000' stroke-width='3' marker-end='url(#arrowTwo)' /> 
      <line x1='182' y1='110' x2='27' y2='18' stroke='#000' stroke-width='3' marker-end='url(#arrowTwo)' />
      <line x1='10' y1='15' x2='10' y2='82' stroke='#000' stroke-width='3' marker-end='url(#arrowTwo)' />
    </svg>

DIV3

 <svg width='200' height='60' id='teste'>
      <defs id='teste1'>
        <marker id='arrowLeftDown' markerWidth='10' markerHeight='10' refX='0' refY='3' orient='auto' markerUnits='strokeWidth'>
          <path d='M0,0 L0,6 L9,3 z' fill='#000' />
        </marker>
      </defs>
      <line x1='10' y1='5' x2='10' y2='25' stroke='#000' stroke-width='3' marker-end='url(#arrowLeftDown)' />
    </svg>

该列表将始终具有（div1 或 div2）和 div3。

例如：

分区 1 分区 1 分区 3 分区 3 分区 3 分区 3

或者

分区 2 分区 3 分区 3 分区 3

问题是 div3 无法识别 id“arrowLeftDown”，但如果我在 Div1 之后使用“arrowThree”，如果在 Div2 之后使用“arrowTwo”，则它可以工作并添加标记。但是，一旦我的列表是动态的并且我不想创建许多 Div3，每个 Div1 和 Div2 一个，我就不能有这种区别。

标签： htmlsvgmarker

Answer 1

我在其他 div 之前添加了一个带有 defs 的 SVG 标记，如下所示：

<svg width='0' height='0'>
      <defs>
        <marker id='arrow' markerWidth='10' markerHeight='10' refX='0' refY='3' orient='auto' markerUnits='strokeWidth'>
          <path d='M0,0 L0,6 L9,3 z' fill='#000' />
        </marker>
      </defs>
</svg>

<div>
    <svg width='200' height='176'>
      <line x1='185' y1='5' x2='185' y2='140' stroke='#000' stroke-width='3' marker-end='url(#arrow)' />
      <line x1='178' y1='160' x2='27' y2='25' stroke='#000' stroke-width='3' marker-end='url(#arrow)' />
      <line x1='10' y1='20' x2='10' y2='140' stroke='#000' stroke-width='3' marker-end='url(#arrow)' />
    </svg>
</div>

<div>
    <svg width='200' height='118'>  
      <line x1='185' y1='5' x2='185' y2='82' stroke='#000' stroke-width='3' marker-end='url(#arrow)' /> 
      <line x1='182' y1='110' x2='27' y2='18' stroke='#000' stroke-width='3' marker-end='url(#arrow)' />
      <line x1='10' y1='15' x2='10' y2='82' stroke='#000' stroke-width='3' marker-end='url(#arrow)' />
    </svg>
</div>

<div>
    <svg width='200' height='60'> 
      <line x1='10' y1='5' x2='10' y2='25' stroke='#000' stroke-width='3' marker-end='url(#arrow)' />
    </svg>
</div>