Safari Dev Tools JS控制台窗口中的$ 1和$ 2等是什么? [英] What is $1 and $2 etc in Safari Dev Tools JS Console window?

问题描述

当我在Safari上运行开发工具并在控制台窗口中使用querySelector时.我得到正确的值，然后是$ 1和$ 2，依此类推...有人可以帮助理解它们的意思吗?

When I run Dev Tools on Safari and use querySelector in console window. I get correct values and then $1 and $2 so on... Can anyone help understand what they mean?

推荐答案

Chrome浏览器:

Chrome:

$ 0-$ 4

Dev Tools会记住您在选项卡(或个人档案"面板)中选择的最后五个DOM元素(或JavaScript堆对象).它使这些对象可用为$ 0，$ 1，$ 2，$ 3和$ 4.$ 0返回最近选择的元素或JavaScript对象，$ 1返回第二个最近选择的元素，依此类推.

$0 - $4

Dev Tools remembers the last five DOM elements (or JavaScript heap objects) that you've selected in the tab (or Profiles panel). It makes those objects available as $0, $1, $2, $3, and $4. $0 returns the most recently selected element or JavaScript object, $1 returns the second most recently selected one, and so on.

https://developer.chrome.com/devtools/docs/commandline-api#0-4

Safari:

$ 1..4

分别代表内容浏览器中的最后一个，倒数第二个，倒数第三个和倒数第四个节点.

$1..4

Represents the last, second to last, third to last, and fourth to last selected node in the content browser, respectively.

https://developer.apple.com/library/mac/documentation/AppleApplications/Conceptual/Safari_Developer_Guide/Console/Console.html

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