Chrome扩展程序：WebQL数据库未出现在Inspector中 [英] Chrome Extension: WebQL database is not appearing in Inspector

问题描述

我试图在 background.js 文件中创建数据库和表格，但不知何故它没有被创建。当我在Chrome Inspector> Resources> WebSQL中看到时，我什么都没发现。代码如下：

  function fetchData（）{
 
 var xhr = new XMLHttpRequest（）; 
 xhr.open（GET，http：//localhost/php/fetch.php，true）; 
 xhr.onreadystatechange = function（）{
 if（xhr.readyState == 4）{
 // JSON.parse不会评估攻击者的脚本。 
 var resp = xhr.responseText; 
 if（resp！= null）{
 var json = JSON.parse（resp）
 console.log（resp）; 
 var data = json ['data']; 
 if（data！= null）{
 openDatabase（'documents'，'1.0'，'my storage'，5 * 1024 * 1024，function（db）{
 alert（'Called '）; //这不是被调用的
}）; 
 // var dbConnection = openDbConnect（）; 
 // createTable（dbConnection）; 
 //下面的代码被称为
（var a = 0; a< = data.length; a ++）{
 alert（data [a] .title）; 
} 
} 
 
} 
 
} 
} 
 xhr.send（）; 
} 
  

更新
$ b

我猜它正在创建中：我的扩展ID是 bkjajbjnoadlhnhmfekipifehbhgidpg
在〜/ Library / Application Support / Google / Chrome / Default / databases 我发现：

chrome-extension_bkjajbjnoadlhnhmfekipifehbhgidpg_0

但在Inspector中我看不到它。

更新＃2

结果表明，像Chrome，Chrome和Chrome这样的页面 WebSQL 不可见。它显示Db到被访问的页面。现在我不知道如何在浏览器中过度使用与Chrome相关的Db。 为解决方案

访问检查器应用程序，进入菜单>设置>扩展，并确保它在开发人员模式。它应该有一个链接来检查你的应用程序的背景页面。它将在新窗口中打开。

I am trying to create database and tables in background.js file of Chrome but somehow it's not being created. When I see in Chrome Inspector > Resources > WebSQL, I find nothing. Code is given below:

function fetchData(){

    var xhr = new XMLHttpRequest();
    xhr.open("GET", "http://localhost/php/fetch.php", true);
    xhr.onreadystatechange = function() {
        if (xhr.readyState == 4) {
            // JSON.parse does not evaluate the attacker's scripts.
            var resp = xhr.responseText;
            if(resp != null) {
                var json = JSON.parse(resp)
                console.log(resp);
                var data = json['data'];
                if(data != null) {
                    openDatabase('documents', '1.0', 'my storage', 5*1024*1024, function (db) {
                        alert('Called'); //This is not being called. 
                    });
                    //var dbConnection = openDbConnect();
                    //createTable(dbConnection);
                    //Code below is called
                    for(var a=0;a <= data.length;a++) {
                        alert(data[a].title);
                    }
                }

            }

        }
    }
    xhr.send();
}

Update

I guess it's being created: My Extension ID is bkjajbjnoadlhnhmfekipifehbhgidpg In ~/Library/Application Support/Google/Chrome/Default/databases I find:

chrome-extension_bkjajbjnoadlhnhmfekipifehbhgidpg_0

But it's weird I can't see it in Inspector.

Update #2

Turns out that like pages, WebSQL is not visible across Chrome. It shows Db to the page which is visited. Now I am getting no idea how to excess chrome related Db in Viewer.

解决方案

To access the inspector for the background page of your app, go to Menu>Settings>Extensions and make sure it's in Developer Mode. It should have a link to inspect the background page of your app in there. It will open up in a new window.

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