我有一些 D3.js 可视化我想在我使用 Hugo 制作的 Github Pages 网站上提供服务。我正在努力如何在 Markdown 文件中包含可视化(html 和 js 文件)。这可能吗?如果没有,我可以在 Hugo 上使用独立的 html 文件吗?
这是可行的,只要您可以包含 D3 本身的 javascript 文件和您的图表定义:
考虑这个例子的一个稍微简化的版本:
margin = ({top: 20, right: 0, bottom: 30, left: 40})
height = 500
width = 500
data = [
{name: "E", value: 0.12702},
{name: "T", value: 0.09056},
{name: "A", value: 0.08167},
{name: "O", value: 0.07507},
{name: "I", value: 0.06966},
{name: "N", value: 0.06749},
{name: "S", value: 0.06327},
{name: "H", value: 0.06094},
{name: "R", value: 0.05987},
{name: "D", value: 0.04253},
{name: "L", value: 0.04025},
{name: "C", value: 0.02782},
{name: "U", value: 0.02758},
{name: "M", value: 0.02406},
{name: "W", value: 0.0236},
{name: "F", value: 0.02288},
{name: "G", value: 0.02015},
{name: "Y", value: 0.01974},
{name: "P", value: 0.01929},
{name: "B", value: 0.01492}
]
yAxis = g => g
.attr("transform", `translate(${margin.left},0)`)
.call(d3.axisLeft(y))
.call(g => g.select(".domain").remove())
xAxis = g => g
.attr("transform", `translate(0,${height - margin.bottom})`)
.call(d3.axisBottom(x).tickSizeOuter(0))
y = d3.scaleLinear()
.domain([0, d3.max(data, d => d.value)]).nice()
.range([height - margin.bottom, margin.top])
x = d3.scaleBand()
.domain(data.map(d => d.name))
.range([margin.left, width - margin.right])
.padding(0.1)
function zoom(svg) {
const extent = [[margin.left, margin.top], [width - margin.right, height - margin.top]];
svg.call(d3.zoom()
.scaleExtent([1, 8])
.translateExtent(extent)
.extent(extent)
.on("zoom", zoomed));
function zoomed() {
x.range([margin.left, width - margin.right].map(d => d3.event.transform.applyX(d)));
svg.selectAll(".bars rect").attr("x", d => x(d.name)).attr("width", x.bandwidth());
svg.selectAll(".x-axis").call(xAxis);
}
}
const svg = d3.select(".visualisation")
.append("svg")
.attr("width", width)
.attr("height", height)
.call(zoom);
svg.append("g")
.attr("class", "bars")
.attr("fill", "steelblue")
.selectAll("rect")
.data(data)
.join("rect")
.attr("x", d => x(d.name))
.attr("y", d => y(d.value))
.attr("height", d => y(0) - y(d.value))
.attr("width", x.bandwidth());
svg.append("g")
.attr("class", "x-axis")
.call(xAxis);
svg.append("g")
.attr("class", "y-axis")
.call(yAxis);
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---
title: "D3.js bars"
date: 2020-03-24T00:00:00Z
draft: false
---
### Hello
<div class="visualisation"> </div> <!-- Hugo supports html in markdown -->
<script src = "https://cdnjs.cloudflare.com/ajax/libs/d3/5.15.0/d3.js"></script> <!-- load d3.js from CDN. you could potentially load it from /static folder as well-->
<script src = "/example.js"></script> <!-- this will pick our scipt up and render the chart -->
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这种结构可能并不理想,因为您可能会将 javascript 引用粘贴到某种类型的可重用布局中,并可能对图表定义进行参数化,因此您不必为每个页面重复它。在不知道您的具体情况的情况下,提出这些建议有点困难。我只是希望它能给你一个足够好的提示,让你继续前进。
UPD我很确定代码本身正在工作:请参阅此 jsfiddle。Hugo 有不同的文件布局,但我想在这里说明的一点是,这应该是确保您的两个 javascript 文件都被加载的问题。
UPD2从 0.60.0 版本开始,默认情况下Hugo将不允许不安全的 html 内容(例如标签)。要使其工作,您需要启用它:
---
title: "D3.js bars"
date: 2020-03-24T00:00:00Z
draft: false
---
### Hello
<div class="visualisation"> </div> <!-- Hugo supports html in markdown -->
<script src = "https://cdnjs.cloudflare.com/ajax/libs/d3/5.15.0/d3.js"></script> <!-- load d3.js from CDN. you could potentially load it from /static folder as well-->
<script src = "/example.js"></script> <!-- this will pick our scipt up and render the chart -->
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