在chrome文档中,我们可以使用以下命令从选项页面发送消息:
chrome.runtime.sendMessage
我们不能使用:
chrome.tabs.sendMessage
我想从选项页面向内容脚本发送消息。我可以直接这样做吗? 这是我的选项页面脚本:
document.addEventListener("DOMContentLoaded", function() {
var radio = document.querySelectorAll("input[type=radio][name=quality]");
for(i=0; i<radio.length; i++)
radio[i].addEventListener("change", function(){
val = this.id;
localStorage.setItem("youtube_filter_video_quality", val);
chrome.runtime.sendMessage({"youtube_filter_video_quality": val});
});
});
这是内容脚本:
chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse) {
if(request.youtube_filter_video_quality!==undefined){
console.log(request.youtube_filter_video_quality);
}
}
);
这是manifest.json:
{
"name": "__MSG_name__",
"short_name": "__MSG_short_name__",
"manifest_version": 2,
"version":"1.5.0.0",
"description": "__MSG_description__",
"default_locale": "en",
"browser_action": {
"default_icon": "48.png",
"default_title": "__MSG_default_title__",
"default_popup": "popup.html"
},
"background":{
"page":"background.html",
"persistent": false
},
"content_scripts":[
{
"matches": [ "*://*.youtube.com/*" ],
"css": ["app_player.css"],
"run_at": "document_end"
}
],
"permissions": [
"tabs",
"activeTab",
"storage",
"<all_urls>",
"webNavigation"
],
"icons": {
"64":"64.png",
"48": "48.png",
"32":"32.png",
"16": "16.png",
"128": "128.png"
},
"options_page": "options.html",
"options_ui": {
"chrome_style": true,
"page": "option.html"
}
}
console.log
无法写任何内容(空白)。