Chrome扩展程序双击一个字 [英] Chrome extension double click on a word

问题描述

我想知道如何在用户双击他们正在访问的页面上的任何单词时（从内容脚本）调用一个函数。类似于 Google字典扩展程序。我检查了扩展中的代码，但它没有缩进（编译/最小化），所以我决定在这里提出这个问题。一小段代码会很好。提前致谢：）

I would like to know how to call a function once the user double-clicks on any word on the page they are visiting (from a content script). Something similar to Google Dictionary extension. I have inspected the codes in the extension but it was not indented (compiled/minimized) so I've decided to ask this question here. A snippet of codes would be good. Thanks in advance :)

推荐答案

我怀疑Google会在页面上添加一个EventListener来注册双击，然后获取文本这是自动选择的。

I suspect Google adds an EventListener to the page to register a double click, and then gets the text that was automatically selected.

http ：//developer.mozilla.org/en/DOM/element.addEventListener

http://developer.mozilla.org/en/DOM/window.getSelection

f=function(){
   console.log(window.getSelection().toString());
}
document.body.addEventListener('dblclick',f);

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