为何JavaScript变量会以美圆符号开头？ - Why would a JavaScript variable start with a dollar sign?

问题：

I quite often see JavaScript with variables that start with a dollar sign. 我常常看到JavaScript带有以美圆符号开头的变量。 When/why would you choose to prefix a variable in this way? 您什么时候/为何选择以这种方式为变量添加前缀？

(I'm not asking about $('p.foo') syntax that you see in jQuery and others, but normal variables like $name and $order ) （我不是在问您在jQuery和其余语言中看到的$('p.foo')语法，而是普通变量，例如$name和$order ）

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解决方案：

参考一： https://stackoom.com/question/rYD/为何JavaScript变量会以美圆符号开头
参考二： https://oldbug.net/q/rYD/Why-would-a-JavaScript-variable-start-with-a-dollar-sign