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-->
呼出快捷指令面板：cmd + shift + p
在Devtools界面下，键入cmd + shift + p`将其激活，然后开始在栏中键入要查找的命令或输入？号以查看所有可用命令 .如下图:其中Open file,Go to line,Go to symbol对于快速打开文件和定位文件位置还是节省了不少时间.
1.性能监视器：> performance monitor
本地覆盖：local overrides
感觉这个特性是超级棒。 使用我们自己的本地资源覆盖网页所使用的资源。 多说无益，直接举个例子大家就明白了。大家看到了吧，我们可以把网络资源直接和本地资源映射，再次刷新网页，取得资源文件就是本地的了。这种对js、css等文件批量修改调试特别有用。
local overrides还可以模拟Mock数据，如果后端API还不OK或者不想频繁的发布后台API。这个功能是相 当有用，不过听说还不支持XHR请求。
控制台内置指令
私以为如果网页里面如果没有引用jquery是不是就不能使用$这样的语法了,nonono
$(selector, [startNode])：单选择器
可以选择元素并触发元素事件.
$$（选择器，[startNode]）：全选择器
$x(path, [startNode])：xpath选择器
$x(path)返回与给定xpath表达式匹配的DOM元素数组 .
$x('//div'):返回页面上的所有div元素。
getEventListeners（object）:获取指定对象的绑定事件
Console...的多种用法
1.变量打印：%s、%o、%d、和%c
例如： const text = "文本1"
console.log(打印${text})
//结果为打印文本1
2.布尔断言打印：console.assert()
做前端调试时很有用。
3.console.table()内容可以以表格的形式输出.
