Chrome扩展程序：chrome.tabs.executeScript无效

Question

I'm writing a chrome extension, and want to execute a content script from my background script. The background script executes, but the content doesn't. Here are the relevant chunks of code:

manifest.json :

"background": {
    "scripts": ["js/app/background.js"],
    "persistent": true
},

"permissions": [
    "identity",
    "tabs",
    "activeTab",
    "*://*/*"
]

background.js :

console.log('background')
chrome.tabs.executeScript(null, {file: "content.js"})

content.js :

console.log('content')

When I inspect element, the console has background logged on it, but not content . The regular console also has nothing logged on it. What am I doing wrong?

Answer 1

In your background.js wrap your chrome.tabs.executeScript in this:

chrome.tabs.onUpdated.addListener(function(tab) {

    chrome.tabs.executeScript({
        file: '/scripts/runsOnPageLoad.js'
    }); 

});

Answer 2

我无法使用编程注入工作，所以我刚刚在manifest.json的content_scripts字段中指定了它（ https://developer.chrome.com/extensions/content_scripts#registration ）

Answer 3

you should add permision "activeTab". more information https://developer.chrome.com/extensions/content_scripts#pi

Answer 4

It must be as mentioned below:

chrome.runtime.onMessage.addListener(function(message, sender, sendResponse) {
chrome.tabs.executeScript({
        code:"alert('Any Javascript code comes here !');"
    });

});

Note: can execute in background script, Don't forgot to allow necessary permissions in manifest.json