如何在不刷新页面的情况下重置Firefox控制台？

Question

如何重置Firefox Web控制台以便能够使用已经声明的变量？

console.clear()只会清除输出。已经声明的所有变量都保留在内存中。我正在努力摆脱：

Error: "SyntaxError: redeclaration of..."

Answer 1

When testing something, use the same construction you would (well, should) use to prevent code and variables being dropped in the global scope. Use Immediately Invoked Function Expressions (IIFE) and place your code in it. Each IIFE is it's own context, so re-declaring is not a problem.

(function () {
  const myConstant = 1;

  console.log(myConstant);
}());

Note that Chrome 80 allows redeclaration of const and let. There exists a relevant bug in bugzilla for Firefox.

Answer 2

如果刷新页面会重置控制台，那么您可以使用location.reload()通过控制台刷新页面。