哪些字符可用于上/下三角形（无茎的箭头）以HTML显示？

问题：

I'm looking for a HTML or ASCII character which is a triangle pointing up or down so that I can use it as a toggle switch. 我正在寻找一个HTML或ASCII字符，该字符是向上或向下的三角形，因此可以将其用作切换开关。

I found ↑ ( ↑ ), and ↓ ( ↓ ) - but those have a narrow stem. 我发现↑（ ↑ ）和↓（ ↓ ）-但它们的茎很窄。 I'm looking just for the HTML arrow "head". 我只是在寻找HTML箭头“ head”。

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解决方案：

参考一： https://stackoom.com/question/BKhc/哪些字符可用于上-下三角形-无茎的箭头-以HTML显示
参考二： https://oldbug.net/q/BKhc/What-characters-can-be-used-for-up-down-triangle-arrow-without-stem-for-display-in-HTML

来源：oschina

链接：https://my.oschina.net/u/4438370/blog/4309446