fix: re-render gitalk when router changed

Author: spiritree

Diff for: src/plugins/gitalk.js

@@ -7,10 +7,16 @@ function install(hook) {
     const main = dom.getNode('#main')
     div.style = `width: ${main.clientWidth}px; margin: 0 auto 20px;`
     dom.appendTo(dom.find('.content'), div)
-    const script = dom.create('script')
-    const content = `gitalk.render('gitalk-container')`
-    script.textContent = content
-    dom.appendTo(dom.body, script)
+  })
+
+  hook.doneEach(_ => {
+    const el = document.getElementById('gitalk-container')
+    while (el.hasChildNodes()) {
+      el.removeChild(el.firstChild)
+    }
+
+    // eslint-disable-next-line
+    gitalk.render('gitalk-container')
   })
 }