fix: check for src before attempting to add popover

Jacky Zhao

2022-04-06 f9c7cdf928e8068532d2630336a7b08d5085548e

 assets/js/popover.js

@@ -10,24 +10,26 @@
  document.addEventListener("DOMContentLoaded", () => {
    fetchData.then(({ content }) => {
      const links = [...document.getElementsByClassName("internal-link")]
      links.forEach(li => {
        const linkDest = content[li.dataset.src.replace(basePath, "")]
        if (linkDest) {
          const popoverElement = `<div class="popover">
      links
        .filter(li => li.dataset.src)
        .forEach(li => {
          const linkDest = content[li.dataset.src.replace(basePath, "")]
          if (linkDest) {
            const popoverElement = `<div class="popover">
    <h3>${linkDest.title}</h3>
    <p>${removeMarkdown(linkDest.content).split(" ", 20).join(" ")}...</p>
    <p class="meta">${new Date(linkDest.lastmodified).toLocaleDateString()}</p>
</div>`
          const el = htmlToElement(popoverElement)
          li.appendChild(el)
          li.addEventListener("mouseover", () => {
            el.classList.add("visible")
          })
          li.addEventListener("mouseout", () => {
            el.classList.remove("visible")
          })
        }
      })
            const el = htmlToElement(popoverElement)
            li.appendChild(el)
            li.addEventListener("mouseover", () => {
              el.classList.add("visible")
            })
            li.addEventListener("mouseout", () => {
              el.classList.remove("visible")
            })
          }
        })
    })
  })
}