在 SVG 中显示和隐藏元素 [英] Show and hide elements inside SVGs

问题描述

我正在尝试设置一个交互式地图，您可以在其中单击圆圈(对于城市)以显示一些文本.当您单击另一个圆圈时，会出现另一个文本.这是我到目前为止所做的:

I'm trying to set up an interactive map where you can click on circles (for cities) to make some text appear. When you click on another circle another text appears. Here is what I made so far:

<svg width="320px" height="210px"
     xmlns="http://www.w3.org/2000/svg">
  <title>Javascript und SVG</title>
  <defs>
    <script type="text/javascript">
    <![CDATA[
      var id = 'name';

      function place(id){
        var adress_style = document.getElementById(id).style;
        adress_style.setProperty('display','block');
      }
    ]]>
    </script>

  </defs>

<!-- Text: show and hide -->
<g id="city_1" style="display:none; background-color:white;"><text transform="matrix(1 0 0 1 50 30)"><tspan x="0" y="0" fill="#382787" font-family="'Roboto'" font-size="14">Organisation No. 1</tspan><tspan x="0" y="18" font-family="'Roboto'" font-size="14">Responsible Person</tspan><tspan x="0" y="36" font-family="'Roboto'" font-size="14">Zip City</tspan><tspan x="0" y="54" font-family="'Roboto'" font-size="14">Phone No.</tspan><tspan x="0" y="72" font-family="'Roboto'" font-size="14">mail adress</tspan></text>
</g>
<g id="city_2" style="display:none; background-color:white;"><text transform="matrix(1 0 0 1 50 30)"><tspan x="0" y="0" fill="#382787" font-family="'Roboto'" font-size="14">Another Organisation</tspan><tspan x="0" y="18" font-family="'Roboto'" font-size="14">Another Person</tspan><tspan x="0" y="36" font-family="'Roboto'" font-size="14">Another City</tspan><tspan x="0" y="54" font-family="'Roboto'" font-size="14">Phone No.</tspan><tspan x="0" y="72" font-family="'Roboto'" font-size="14">another mail adress</tspan></text>
</g>
<!-- 2 circles as buttons -->
  <circle cx="240" cy="30" r="10"
    style="fill:white; stroke:black;"
    onclick="place('city_1')" />
  <circle cx="240" cy="70" r="10"
    style="fill:green; stroke:black;"
    onclick="place('city_2')" />

</svg>

它有效，但文本块重叠.我该怎么做才能一次只显示一个文本?

It works but the text blocks overlap. What can I do so that there is only one text displayed at a time?

您的帮助将不胜感激！感谢您的帮助！

Your help will be appreciated! Thanks for your help!

推荐答案

您可以获取所有 g 元素并隐藏它们，然后显示您想要的.

You could get all the g elements and hide them, then show the one you want.

<svg width="320px" height="210px"
     xmlns="http://www.w3.org/2000/svg">
  <title>Javascript und SVG</title>
  <defs>
    <script type="text/javascript">
    <![CDATA[
      var id = 'name';

      function place(id){
        var gs = document.getElementsByTagName("g");
        for (var i = 0; i < gs.length; i++) {
          gs[i].style.setProperty('display','none');
        }
        var adress_style = document.getElementById(id).style;
        adress_style.setProperty('display','block');
      }
    ]]>
    </script>

  </defs>

<!-- Text: show and hide -->
<g id="city_1" style="display:none; background-color:white;"><text transform="matrix(1 0 0 1 50 30)"><tspan x="0" y="0" fill="#382787" font-family="'Roboto'" font-size="14">Organisation No. 1</tspan><tspan x="0" y="18" font-family="'Roboto'" font-size="14">Responsible Person</tspan><tspan x="0" y="36" font-family="'Roboto'" font-size="14">Zip City</tspan><tspan x="0" y="54" font-family="'Roboto'" font-size="14">Phone No.</tspan><tspan x="0" y="72" font-family="'Roboto'" font-size="14">mail adress</tspan></text>
</g>
<g id="city_2" style="display:none; background-color:white;"><text transform="matrix(1 0 0 1 50 30)"><tspan x="0" y="0" fill="#382787" font-family="'Roboto'" font-size="14">Another Organisation</tspan><tspan x="0" y="18" font-family="'Roboto'" font-size="14">Another Person</tspan><tspan x="0" y="36" font-family="'Roboto'" font-size="14">Another City</tspan><tspan x="0" y="54" font-family="'Roboto'" font-size="14">Phone No.</tspan><tspan x="0" y="72" font-family="'Roboto'" font-size="14">another mail adress</tspan></text>
</g>
<!-- 2 circles as buttons -->
  <circle cx="240" cy="30" r="10"
    style="fill:white; stroke:black;"
    onclick="place('city_1')" />
  <circle cx="240" cy="70" r="10"
    style="fill:green; stroke:black;"
    onclick="place('city_2')" />

</svg>

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