From a72e7490c33f189a9b40cf09366272479cd7ee62 Mon Sep 17 00:00:00 2001
From: Li Yiming <upupming@gmail.com>
Date: Tue, 6 Nov 2018 17:27:24 +0800
Subject: [PATCH] docs: mermaid duplicated id, see #504 (#685)

Please makes sure these boxes are checked before submitting your PR, thank you!

* [x] Make sure you are merging your commits to `master` branch.
* [x] Add some descriptions and refer relative issues for you PR.
* [x] DO NOT include files inside `lib` directory.
---
 docs/markdown.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/markdown.md b/docs/markdown.md
index d03d5ec4..c506e17c 100644
--- a/docs/markdown.md
+++ b/docs/markdown.md
@@ -36,6 +36,7 @@ window.$docsify = {
 //  <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.css">
 //  <script src="//cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script>
 
+var num = 0;
 mermaid.initialize({ startOnLoad: false });
 
 window.$docsify = {
@@ -44,7 +45,7 @@ window.$docsify = {
       code: function(code, lang) {
         if (lang === "mermaid") {
           return (
-            '<div class="mermaid">' + mermaid.render(lang, code) + "</div>"
+            '<div class="mermaid">' + mermaid.render('mermaid-svg-' + num++, code) + "</div>"
           );
         }
         return this.origin.code.apply(this, arguments);