Chrome extension injecting script get error

Question

On injecting the script by using command

chrome.tabs.executeScript(
  null, {file: \"dialog.js\"});

throwing error

Unchecked runti

Answer 1

Please explicitly set the tabId parameter of executeScript, which by default would be the active tab of the current window.

If you couldn't get tabId directly, use chrome.tabs.query to query tab state.

chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
    for(var i = 0; i<tabs.length;i++) {
        chrome.tabs.executeScript(tabs[i].id, {"file": "dialog.js"});
    }
});

And don't forget add "web_accessible_resources": ["dialog.js"] in your manifest.json