Chrome 上下文菜单扩展：将选定的文本保存到变量中

Question

I am trying to create an extension that will search the selected word into a dictionary. I am trying to get the selected text into a variable in JavaScript but it's not working. Here is the code:

var search= {
    "id": "searchurl",
    "title": "Search on dictionary",
    "contexts": ["selection"]

};

chrome.contextMenus.create(search);

chrome.contextMenus.onClicked.addListener(function(clickData){
    "use strict";
    if (clickData.menuItemId === "searchurl" && clickData.selectionText){
        var urlkey = Document.getSelection().toString();
        alert(urlkey);

    }

});

I have included jquery to make it work on chrome.

Answer 1

clickData.selectionText already has your selected text.

var search = {
    "id": "searchurl",
    "title": "Search on dictionary",
    "contexts": ["selection"]
};

chrome.contextMenus.create(search);

chrome.contextMenus.onClicked.addListener(function(clickData) {
    if (clickData.menuItemId === "searchurl" && clickData.selectionText) {
        alert(clickData.selectionText)
    }
});