Javascript 从内联JS处理文本字符串

我有下面的代码，它从网页上的内联JS中提取webID。这用于Chrome扩展，单击时仅显示站点的webID：

// payload.js script --> insert into the current tab after the popout has loaded
window.addEventListener('load', function (evt) {
    chrome.extension.getBackgroundPage().chrome.tabs.executeScript(null, {
        file: 'payload.js'
    });;
});

//popout.html
chrome.runtime.onMessage.addListener(function (message) {
    document.getElementById('body').innerHTML = message;
    chrome.tabs.executeScript({
    code: '(' + (() => {

    for (var el of document.querySelectorAll('script[if="inlineJs"]')) 

    {
      var m = el.textContent.match(/"([^"]*webId*[^"]*)"/);
      var webid = m     
        if (webid) return webid[1];
        else {return document.getElementById('body').innerHTML = "This is not a CDK site";}     
    }
  }) + ')()',

  }, results => {
  if (!chrome.runtime.lastError && results) {
    document.getElementById('body').textContent = decodeURI(results[0]);
  }
}); 

});

目前，它返回以下内容：

{"cache":{"Co.context.configCtx":{"webId":"gmps-salvadore","locale":"en_US","version":"LIVE","page":"HomePage","secureSiteId":"b382ca78958d10048eda00145edef68b"},"features":{"directivePerfSwitch":true,"enable.directive.localisation":true,"enable.directive.thumbnailGallery":true,"enable.new.newstaticmap":false,"disable.forms.webId":false,"use.hydra.popup.title.override.via.url":true,"enable.directive.geoloc.enableHighAccuracy":true,"use.hydra.theme.service":true,"disable.ajax.options.contentType":false,"dealerLocator.map.use.markerClustering":true,"hydra.open.login.popup.on.cs.click":false,"hydra.consumerlogin.use.secure.cookie":true,"use.hydra.directive.vertical.thumbnailGallery.onpopup":true,"hydra.encrypt.data.to.login.service":true,"disable.dealerlocator.fix.loading":false,"use.hydra.date.formatting":true,"use.hydra.optimized.style.directive.updates":false,"hydra.click.pmp.button.on.myaccount.page":true,"use.hydra.fix.invalid.combination.of.filters":true,"disable.vsr.view.from.preference":false}},"store":{"properties":{"routePrefix":"/hydra-graph"}}}

---

我希望它能退回“gmps萨尔瓦多号”。这将在多个站点上使用，webID将在不同的站点之间更改，前缀从“lex”到“motp”。是否可以让扩展只从各个站点提取webID？

用于获取所需的特定属性。我最初尝试了此操作，但我只保留了“null”//popout.html chrome.runtime.onMessage.addListener（函数（消息）{document.getElementById（'body'）。innerHTML=message；chrome.tabs.executeScript（{code:'+（）=>{for（var-el-of-document.queryselectoral（'script[if=“inlineJs”]）{var-m=el.textContent.match（/”（[^“]*webId*[^“]*））”/）；var-obj=JSON.parse（m）；var-myVar=obj.cache[“Co.context.configCtx”].webId；window.alert（“webId是“+myVar”；return-myVar；}}”）+”，}，