blocks|key|3841158|text|到目前为止，这是可行的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3841159|.attr('onClick',(d)+=>+{
++return+`clicked("${d}")`});|code-block|syntax|javascript|3841160|正确地表示为：|3841161|<button+type="button"+onclick="clicked('Temp_Außen')">Temp_Außen</button>
<button+type="button"+onclick="clicked('Temp_Innen')">Temp_Innen</button>|3841162|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<p>That works so far:</p>
<pre><code>.attr('onClick',(d) =&gt; {
  return `clicked(&quot;${d}&quot;)`});
</code></pre>
<p>is correctly expressed as:</p>
<pre><code>&lt;button type=&quot;button&quot; onclick=&quot;clicked('Temp_Außen')&quot;&gt;Temp_Außen&lt;/button&gt;
&lt;button type=&quot;button&quot; onclick=&quot;clicked('Temp_Innen')&quot;&gt;Temp_Innen&lt;/button&gt;
</code></pre>


blocks|key|1961323|text|d3.select('body')
++.selectAll('button')
++.data(keys)
++.enter()
++.append('button')
++.text(d+=>+d)
++.attr('type',+'button')
++.attr('onClick',+addClickFunction);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1961324|定义您的函数addClickFunction(d，i)，其中您的值在d和i中|unstyled|1961325|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>d3.select('body')
  .selectAll('button')
  .data(keys)
  .enter()
  .append('button')
  .text(d =&gt; d)
  .attr('type', 'button')
  .attr('onClick', addClickFunction);
</code></pre>
<p>define your function addClickFunction(d, i) where your values are in d and i</p>


blocks|key|1961346|text|首先，与问题中的代码不同，your+answer是有效的，因为传递给attr方法内的匿名函数的第一个参数是绑定到元素的数据，正如API中所有地方所描述的那样|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1961347|1961348|+...如果该值是一个函数，将按传递当前数据(d)、当前索引(i)和当前组(节点)的顺序，为每个选定元素计算该值，并将其作为当前DOM元素(nodesi)|blockquote|1961349|1961350|1961351|另一方面，在你的问题中，这...|1961352|`clicked(${d+=>+d})`|code-block|syntax|javascript|1961353|...is只是一个字符串，永远不会对d求值。|1961354|话虽如此，让我们继续回答:许多人建议不要使用内联事件或DOM+onevent+handlers，例如您问题中的onClick。我不会深入讨论这个问题(参见here)；不过，我想说的是，使用D3+on方法添加事件侦听器是一种惯用的方式。|1961355|这很简单：|1961356|.on("click",+d+=>+{
++++//code+here
})|1961357|演示如下：|1961358|​|1961359|const+keys+=+["Temp_Innen",+"Temp_Außen",+"Druck",+"Feuchte_Innen",+"Feuchte_Außen",+"PH10",+"PH25"];

d3.select('body')
++.selectAll('button')
++.data(keys)
++.enter()
++.append('button')
++.text(d+=>+d)
++.attr('type',+'button')
++.on("click",+d+=>+console.log("you+clicked+"+%2B+d));|1961360|<script+src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>|1961361|1961362|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/63518137/5768908|1|https://github.com/d3/d3-selection#selection_attr|2|https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Event_handlers|3|https://stackoverflow.com/a/6348597/5768908^0|Y|4|D|B|0|1S|3|1|0|0|0|0|0|0|0|I|1|0|V|7|1J|7|2P|2|R|K|2|25|4|3|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1N|8|@$9|1O|A|1P|B|C]]|D|@$9|1Q|A|1R|1|1S]|$9|1T|A|1U|1|1V]]|E|$]]|$1|F|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|1X|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|1Y|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|1Z|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|20|8|@]|D|@]|E|$]]|$1|N|3|O|5|P|7|21|8|@]|D|@]|E|$Q|R]]|$1|S|3|T|5|6|7|22|8|@$9|23|A|24|B|C]]|D|@]|E|$]]|$1|U|3|V|5|6|7|25|8|@$9|26|A|27|B|C]|$9|28|A|29|B|C]|$9|2A|A|2B|B|C]]|D|@$9|2C|A|2D|1|2E]|$9|2F|A|2G|1|2H]]|E|$]]|$1|W|3|X|5|6|7|2I|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|P|7|2J|8|@]|D|@]|E|$Q|R]]|$1|10|3|11|5|6|7|2K|8|@]|D|@]|E|$]]|$1|12|3|13|5|6|7|2L|8|@]|D|@]|E|$]]|$1|14|3|15|5|P|7|2M|8|@]|D|@]|E|$Q|R]]|$1|16|3|17|5|P|7|2N|8|@]|D|@]|E|$Q|R]]|$1|18|3|13|5|6|7|2O|8|@]|D|@]|E|$]]|$1|19|3|-4|5|6|7|2P|8|@]|D|@]|E|$]]]|1A|$1B|$5|1C|1D|1E|E|$1F|1G]]|1H|$5|1C|1D|1E|E|$1F|1I]]|1J|$5|1C|1D|1E|E|$1F|1K]]|1L|$5|1C|1D|1E|E|$1F|1M]]]]

<p>First of all, unlike the code in your question <a href="https://stackoverflow.com/a/63518137/5768908">your answer</a> works because the first argument passed to the anonymous function inside the <code>attr</code> method is the <em>datum</em> bound to the element, as described everywhere in the <a href="https://github.com/d3/d3-selection#selection_attr" rel="nofollow noreferrer">API</a>:</p>
<blockquote>
<p>[...] if the value is a function, it is evaluated for each selected element, in order, being passed the current datum (d), the current index (i), and the current group (nodes), with this as the current DOM element (nodes[i])</p>
</blockquote>
<p>On the other hand, in your question, this...</p>
<pre><code>`clicked(${d =&gt; d})`
</code></pre>
<p>...is simply a string, and <code>d</code> is never evaluated.</p>
<p>That being said, let's proceed to the answer: a lot of people advise against using inline events, or <a href="https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Event_handlers" rel="nofollow noreferrer">DOM <code>onevent</code> handlers</a>, such as the <code>onClick</code> in your question. I'll not get into that discussion (see <a href="https://stackoverflow.com/a/6348597/5768908">here</a>); however, I'd say that adding an event listener with D3 <code>on</code> method is the idiomatic way.</p>
<p>That is as simple as:</p>
<pre><code>.on(&quot;click&quot;, d =&gt; {
    //code here
})
</code></pre>
<p>Here is the demo:</p>
<p><div class="snippet" data-lang="js" data-hide="true" data-console="true" data-babel="false">
<div class="snippet-code snippet-currently-hidden">
<pre class="snippet-code-js lang-js prettyprint-override"><code>const keys = ["Temp_Innen", "Temp_Außen", "Druck", "Feuchte_Innen", "Feuchte_Außen", "PH10", "PH25"];

d3.select('body')
  .selectAll('button')
  .data(keys)
  .enter()
  .append('button')
  .text(d =&gt; d)
  .attr('type', 'button')
  .on("click", d =&gt; console.log("you clicked " + d));</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"&gt;&lt;/script&gt;</code></pre>
</div>
</div>
</p>


<p>I want dynamically create a set of buttons generated by a list of strings:</p>
<pre><code>keys = [ &quot;Temp_Innen&quot;, &quot;Temp_Außen&quot;, &quot;Druck&quot;, &quot;Feuchte_Innen&quot;, &quot;Feuchte_Außen&quot;, &quot;PH10&quot;, &quot;PH25&quot; ]
</code></pre>
<p>Those strings shall also be used in each button on the onClick event function(parameter)...</p>
<p>I use this to create the buttons inside the body:</p>
<pre><code>d3.select('body')
  .selectAll('button')
  .data(keys)
  .enter()
  .append('button')
  .text(d =&gt; d)
  .attr('type', 'button');
</code></pre>
<p>Which gives me nice buttons:
<a href="https://i.stack.imgur.com/S0FTw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/S0FTw.png" alt="enter image description here" /></a></p>
<p>But how can I add dynamically add each string into an function parameter that is called via onClick? I tried this but it doesnt work:</p>
<pre><code>.attr('onClick',`clicked(${d =&gt; d})`);
</code></pre>
<p>But that does not write the strings into the clicked() parameter, instead its written unexpressed as text:</p>
<pre><code>&lt;button type=&quot;button&quot; onClick=&quot;clicked(d =&gt; d)&quot;&gt;Temp_Innen&lt;/button&gt;
&lt;button type=&quot;button&quot; onClick=&quot;clicked(d =&gt; d)&quot;&gt;Temp_Außen&lt;/button&gt;
...
</code></pre>
<p>Is there a way to do that dynamically or should I consider writing all those buttons static in my html file?</p>


Dynamic onclick inside attr?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想动态创建一组由字符串列表生成的按钮：keys = [ "Temp_Innen", "Temp_Außen", "Druck", "Feuchte_Innen", "Feuchte_Außen", "PH10", "PH25" ]这些字符串还应用于onClick事件函数(参数)上的每个按钮...我使用它来创建主体中的...

问在attr中动态onclick？
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问在attr中动态onclick？EN