Chrome 扩展程序正在尝试使用一个不适用于特定页面的函数并导致 Uncaught TypeError

如何解决Chrome 扩展程序正在尝试使用一个不适用于特定页面的函数并导致 Uncaught TypeError

Manifest.json

{
  "name": "Ext1","version": "0.0.1","manifest_version": 2,"description": "This extension was created by Aavesh","default_locale": "en","content_scripts": [
    {
      "matches": [
        "https://stockx.com/*"
      ],"js": [
        "src/inject/jquery.js" 
      ]
    },{
      "matches": [
        "https://stockx.com/"
      ],"css": [
        "src/inject/inject.css"
      ]
    },"js": [
        "src/inject/inject.js" 
      ]
    },{
      "matches": [
        "https://stockx.com/*"
      ],"js": [
        "src/inject/inkect2.js" 
      ]
    } 
      ]
}

inject.js 的代码

window.onload =  function addbtn() {
  var text = "loaded"
  console.log(text) ;

  var r= $('<button class="blue">Open with Yuppo</button>');
        

    $('.css-1bonzt1').find('a').append(r) ;

    $('.css-1bonzt1').click(

               function openinyuppo() {
                          console.log('clicked')

}  );
}

inkect2.js 真正的问题

window.onload    =  function openinnewtab() {
  var text = "loaded"
  console.log(text) ;
 var code  = $('*[data-testid="product-detail-style"]');
 var finalcode = code[0].innerText
window.open("https://x.yupoo.com/photos/hivs/search/album?uid=1&q="+finalcode)
}

主页上的错误（通过inkect2.js）：[这个文件不是用于主页，而是用于我们点击inject.js创建的按钮后加载的产品页面]

未捕获的类型错误：无法读取未定义的属性“innerText” 在 openinnewtab (inkect2.js:15)

产品页面上没有错误。