javascript 如何解决并行脚本下载引起的HTMX部分页面加载问题？

dpiehjr4  于 2023-04-28  发布在  Java
关注(0)|答案(2)|浏览(128)

此bounty已结束。回答此问题可获得+50声望奖励。赏金宽限期9小时后结束。Towhid正在寻找规范答案：为这个问题提供一个优雅的解决方案。

默认情况下，浏览器下载并执行脚本，只要它到达它在html文件（除非defer或async属性用于强制并行下载），所以如果你包括一个JS库，然后写脚本依赖于JS库一切正常。
但是我注意到部分页面的情况并非如此。如果它包含一个库和依赖于它的脚本，那么在下载和执行库之前，调用剩余的脚本，因为它们依赖于库而产生问题。
在我的示例中，我使用**HTMX**partial page load 来加载HTML内容，其中包括Plotly.js库，然后是创建图表所需的html代码和JS脚本。例如：

<script src="https://cdn.plot.ly/plotly-2.20.0.min.js" charset="utf-8"></script>
<div>
    <div id="f657405b-14c4-4ca1-aef4-88d5842739f5" class="plotly-graph-div" style="height:256px; width:100%;"></div>
    <script type="text/javascript">
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false, "responsive": true})};
    </script>
</div>

当我刷新页面时，它加载得很好，因为JS库在图表的html和脚本之前被下载和执行。然而，在部分页面加载中，在JS库被下载和执行之前，每个plot的JS脚本被调用，这引发了错误：
未捕获引用错误：未定义Plotly
那么，如何在部分页面中强制执行串行加载呢？
或者有没有更好的方法来包含特定页面的JS库来避免这个问题？

JavaScript

2条答案

按热度按时间
nuypyhwy

nuypyhwy1#

你有没有试过import每个plots' JS脚本中的Plotly库？类似这样的东西应该可以工作：

<script type="module">
  import 'https://cdn.plot.ly/plotly-2.20.0.min.js';
  window.PLOTLYENV=window.PLOTLYENV || {}; if (document.getElementById("f657405b-14c4-4ca1-aef4-88d5842739f5")) {Plotly.newPlot("f657405b-14c4-4ca1-aef4-88d5842739f5",[{"labels":["Newly Discovered","Indexed"],"values":[2,1],"type":"pie"}],{"template":{"data":{"histogram2dcontour":[{"type":"histogram2dcontour","colorbar":{"outlinewidth":0,"ticks":""},"colorscale":[[0.0,"#0d0887"],[0.1111111111111111,"#46039f"],[0.2222222222222222,"#7201a8"],[0.3333333333333333,"#9c179e"],[0.4444444444444444,"#bd3786"],[0.5555555555555556,"#d8576b"],[0.6666666666666666,"#ed7953"],[0.7777777777777778,"#fb9f3a"],[0.8888888888888888,"#fdca26"],[1.0,"#f0f921"]]}],"choropleth":[{"type":"choropleth","colorbar":{"outlinewidth":0,"ticks":""}}],"histogram2d":[{"type":"histogram2d","colorbar":{"outlinewidth":0,"ticks":""},"colorscale":[[0.0,"#0d0887"],[0.1111111111111111,"#46039f"],[0.2222222222222222,"#7201a8"],[0.3333333333333333,"#9c179e"],[0.4444444444444444,"#bd3786"],[0.5555555555555556,"#d8576b"],[0.6666666666666666,"#ed7953"],[0.7777777777777778,"#fb9f3a"],[0.8888888888888888,"#fdca26"],[1.0,"#f0f921"]]}],"heatmap":[{"type":"heatmap","colorbar":{"outlinewidth":0,"ticks":""},"colorscale":[[0.0,"#0d0887"],[0.1111111111111111,"#46039f"],[0.2222222222222222,"#7201a8"],[0.3333333333333333,"#9c179e"],[0.4444444444444444,"#bd3786"],[0.5555555555555556,"#d8576b"],[0.6666666666666666,"#ed7953"],[0.7777777777777778,"#fb9f3a"],[0.8888888888888888,"#fdca26"],[1.0,"#f0f921"]]}],"heatmapgl":[{"type":"heatmapgl","colorbar":{"outlinewidth":0,"ticks":""},"colorscale":[[0.0,"#0d0887"],[0.1111111111111111,"#46039f"],[0.2222222222222222,"#7201a8"],[0.3333333333333333,"#9c179e"],[0.4444444444444444,"#bd3786"],[0.5555555555555556,"#d8576b"],[0.6666666666666666,"#ed7953"],[0.7777777777777778,"#fb9f3a"],[0.8888888888888888,"#fdca26"],[1.0,"#f0f921"]]}],"contourcarpet":[{"type":"contourcarpet","colorbar":{"outlinewidth":0,"ticks":""}}],"contour":[{"type":"contour","colorbar":{"outlinewidth":0,"ticks":""},"colorscale":[[0.0,"#0d0887"],[0.1111111111111111,"#46039f"],[0.2222222222222222,"#7201a8"],[0.3333333333333333,"#9c179e"],[0.4444444444444444,"#bd3786"],[0.5555555555555556,"#d8576b"],[0.6666666666666666,"#ed7953"],[0.7777777777777778,"#fb9f3a"],[0.8888888888888888,"#fdca26"],[1.0,"#f0f921"]]}],"surface":[{"type":"surface","colorbar":{"outlinewidth":0,"ticks":""},"colorscale":[[0.0,"#0d0887"],[0.1111111111111111,"#46039f"],[0.2222222222222222,"#7201a8"],[0.3333333333333333,"#9c179e"],[0.4444444444444444,"#bd3786"],[0.5555555555555556,"#d8576b"],[0.6666666666666666,"#ed7953"],[0.7777777777777778,"#fb9f3a"],[0.8888888888888888,"#fdca26"],[1.0,"#f0f921"]]}],"mesh3d":[{"type":"mesh3d","colorbar":{"outlinewidth":0,"ticks":""}}],"scatter":[{"fillpattern":{"fillmode":"overlay","size":10,"solidity":0.2},"type":"scatter"}],"parcoords":[{"type":"parcoords","line":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"scatterpolargl":[{"type":"scatterpolargl","marker":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"bar":[{"error_x":{"color":"#2a3f5f"},"error_y":{"color":"#2a3f5f"},"marker":{"line":{"color":"#E5ECF6","width":0.5},"pattern":{"fillmode":"overlay","size":10,"solidity":0.2}},"type":"bar"}],"scattergeo":[{"type":"scattergeo","marker":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"scatterpolar":[{"type":"scatterpolar","marker":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"histogram":[{"marker":{"pattern":{"fillmode":"overlay","size":10,"solidity":0.2}},"type":"histogram"}],"scattergl":[{"type":"scattergl","marker":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"scatter3d":[{"type":"scatter3d","line":{"colorbar":{"outlinewidth":0,"ticks":""}},"marker":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"scattermapbox":[{"type":"scattermapbox","marker":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"scatterternary":[{"type":"scatterternary","marker":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"scattercarpet":[{"type":"scattercarpet","marker":{"colorbar":{"outlinewidth":0,"ticks":""}}}],"carpet":[{"aaxis":{"endlinecolor":"#2a3f5f","gridcolor":"white","linecolor":"white","minorgridcolor":"white","startlinecolor":"#2a3f5f"},"baxis":{"endlinecolor":"#2a3f5f","gridcolor":"white","linecolor":"white","minorgridcolor":"white","startlinecolor":"#2a3f5f"},"type":"carpet"}],"table":[{"cells":{"fill":{"color":"#EBF0F8"},"line":{"color":"white"}},"header":{"fill":{"color":"#C8D4E3"},"line":{"color":"white"}},"type":"table"}],"barpolar":[{"marker":{"line":{"color":"#E5ECF6","width":0.5},"pattern":{"fillmode":"overlay","size":10,"solidity":0.2}},"type":"barpolar"}],"pie":[{"automargin":true,"type":"pie"}]},"layout":{"autotypenumbers":"strict","colorway":["#636efa","#EF553B","#00cc96","#ab63fa","#FFA15A","#19d3f3","#FF6692","#B6E880","#FF97FF","#FECB52"],"font":{"color":"#2a3f5f"},"hovermode":"closest","hoverlabel":{"align":"left"},"paper_bgcolor":"white","plot_bgcolor":"#E5ECF6","polar":{"bgcolor":"#E5ECF6","angularaxis":{"gridcolor":"white","linecolor":"white","ticks":""},"radialaxis":{"gridcolor":"white","linecolor":"white","ticks":""}},"ternary":{"bgcolor":"#E5ECF6","aaxis":{"gridcolor":"white","linecolor":"white","ticks":""},"baxis":{"gridcolor":"white","linecolor":"wh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false, "responsive": true})};
</script>

请注意，您的脚本必须为type="module"。或者，您可以使用dynamic import：

<script>
  import('https://cdn.plot.ly/plotly-2.20.0.min.js').then(() => {
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</script>
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azpvetkf

azpvetkf2#

我认为不应该在每次刷新时加载依赖项。但如果有必要，您需要动态插入脚本，并在其加载事件中继续执行其余代码。另外一个好处是依赖项可以加载到主页面的头部一次。

function addScript( src, callback ) {
  var s = document.createElement( 'script' );
  s.setAttribute( 'src', src );
  s.onload=callback;
  document.body.appendChild( s );
}

在回调中，你可以plotly初始化，这样它看起来就像这样：

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    }
    addScript("https://cdn.plot.ly/plotly-2.20.0.min.js", initPlotly);
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有关动态脚本加载，请参见https://stackoverflow.com/a/69616316/5173936

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