javascript - Page action icon displays only in extension page -
i'm learning creating chrome extensions. have studied page actions, used create icon inside address bar. code follows:
in manifest.json:
{ "manifest_version" :2, "name" : "gtmetrix", "description": "test google chrome extension", "version" : "1.0", "page_action":{ "default_icon" : "icon.png", "default_popup" : "popup.html", "default_title" : "test google chrome extension" }, "background": { "scripts": ["background.js"] }, "permissions" : [ "activetab" ] } in background.js
chrome.tabs.getselected(null, function(tab) { chrome.pageaction.show(tab.id); }); in popup.html
<html> <head> <script src="jquery.min.js"></script> <script src="popup.js"></script> <!--<script src="background.js"></script>--> <style> body{ background:pink} .block{ width : 100%;} </style> </head> <body> <div class="block"> <h2>test extension</h2> <button id="checkpage">check page now!!</button> </div> </body> </html> so when i'm using above code,it shows below: 
but when goes pages google or others, not show icon:
what goes wrong , use of background in manifest.json , why using content_script, exact meaning of that?
i have looked through the devguide
use following in background.js
chrome.tabs.onupdated.addlistener(function(id, info, tab){ showpageaction(tab); }); chrome.tabs.onactivated.addlistener(function(id, info, tab){ chrome.tabs.query({ currentwindow: true, active: true }, function (tabarray) { if(tabarray[0]){ showpageaction(tabarray[0]); } }); }); function showpageaction(tab){ chrome.pageaction.show(tab.id) } there other methods too. chrome extension samples
ps:
- before showing can check tab url or criteria.
- don't user page action if applicable tabs - use browser action instead.
Comments
Post a Comment