javascript - Injecting jQuery into Google.com using a Chrome Extension -


i'm building chrome extension , quite inject jquery google website, reason isn't working me.

here manifest file content_scripts:

"content_scripts": [{     "matches": ["*://www.google.com/*"],     "css": ["src/inject/inject.css"],     "js": ["js/jquery/jquery.min.js", "src/inject/inject.js"],     "run_at" : "document_start"   }]

and jquery in folder supposed be. in inject.js file have:

$("body").append("hello world"); console.log("loaded.");

and strangely enough when go google.com, loaded. appear in console, hello world not appended body, nor error in console strange. did inside of inject.js:

if (window.jquery) {       $("body").append("hello world");     console.log("loaded."); } else {     console.log('not loaded.'); }

and loaded. appeared in console again, , hello world did not appened... don't know problem is... doesn't seem make sense.

any ideas? thank you.

content scripts run in sandboxed contexts. cannot change page-dom within them. there workaround:

in content-script, add scripts via script-tags this:

var script_tag = document.createelement("script"); script_tag.setattribute("src", chrome.extension.geturl("js/jquery/jquery.min.js"));  document.head.appendchild(script_tag);

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