Chrome注入脚本不一致问题 [英] Chrome inject script inconsistency issue
问题描述
下面的函数我做的是将用户重定向到一个登录页面,然后注入一个js来登录用户。下面的代码运行良好但不一致,我很难调试它,因为流包含整个页面的刷新。
在我的setLogin.js中,我试着用$(function(){})中的alert()进行调试。我发现有时它运行不了。所以我怀疑脚本有时会被注入某个时间,但为什么会这样?
chrome.tabs.update(null, {
url:'https://example.com/index.php?act=Login'
},function(){
chrome.tabs.onUpdated.addListener(函数(tabId,changeInfo,tab){
if(changeInfo.status =='complete'){
chrome.tabs.executeScript(null,{$ b $ file:jquery.js
},function(){
chrome.tabs.executeScript(null,{
code:'var passedData = {username:''+ username +',pass: (),{$ b $ file:setLogin.js
},function() {
window.close(); //关闭弹出窗口
});
});
});
}
});
});
默认脚本是在 document_idle
它不能与jQuery保持一致,可能是因为它很大或使用了一些异步初始化。解决方法:明确指定注入脚本应该立即运行。
chrome.tabs.executeScript({file:jquery.js,runAt:document_start} ,函数(result){
});
Below function I did was to redirect user to a login page, and then inject a js to login the user. The code below worked well but not consistent, I hardly can debug it because the flow contain refresh of the whole page.
in my setLogin.js I try to debug with alert() wrap within $(function(){}); I found that sometime it run sometime it doesn't. So I suspect the script sometime got injected sometime not, but why is it like so?
chrome.tabs.update(null, {
url: 'https://example.com/index.php?act=Login'
}, function () {
chrome.tabs.onUpdated.addListener(function (tabId, changeInfo, tab) {
if (changeInfo.status == 'complete') {
chrome.tabs.executeScript(null, {
file: "jquery.js"
}, function () {
chrome.tabs.executeScript(null, {
code: 'var passedData = {username:"' + username + '",pass:"' + pass+'"}'
}, function () {
chrome.tabs.executeScript(null, {
file: "setLogin.js"
}, function () {
window.close(); //close my popup
});
});
});
}
});
});
By default scripts are injected at document_idle
which doesn't work consistently with jQuery, probably because it's big or uses some asynchronous initialization.
Solution: explicitly specify that the injected scripts should run immediately.
chrome.tabs.executeScript({file: "jquery.js", runAt: "document_start"}, function(result) {
});
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