找不到SVG标记ID

Question

我有一个网络阻止列表。该Web块每个div都有一个div，下面的代码根据发送的ID显示。

这些是每个div的代码：

Div1

 <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>

Div2

  <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>

列表将始终具有（div1或div2）和div3。

例如：

Div1 Div1 Div3 Div3 Div3 Div3

或

Div2 Div3 Div3 Div3

问题是div3无法识别ID“ arrowLeftDown”，但是如果我在Div1之后使用“ arrowThree”，或者在Div2之后使用“ arrowTwo”，则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，就不能为每个Div1和Div2创建一个Div3，就无法再有这种区别了。

Answer 1

我在其他div之前添加了带有defs的SVG标签，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>