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我正在尝试编写一个扩展，将所有 http 标头信息存储在一个数组中，以便我可以通过弹出窗口显示它。为了保持一个整洁的弹出页面，我需要在每次新加载后清除标题，但我需要一种方法来判断何时应该发生这种情况。

1）清除新的requestId

  • 不起作用，因为 requestId 每次都会更改

2) 在最后一次 onComplete 发生后的 webRequest 之前清除

  • 不起作用，因为每个图像、main_frame 等都以 onComplete 结尾，因此它会在每个图像或页面完成后清除

有什么建议么？这是我到目前为止所拥有的（选项2）......如果你只使用main_frame，它有点工作，但这并不理想。

beforeRedirect = function( details )  {
    if (debug && details.tabId > 0 && typeof(tabs[details.tabId]) != 'undefined') {
        //returns all info stored in tabs array for the current tab
        log('The following data was recorded and stored', tabs[details.tabId]); 
    }
    //adds current tab to tabs array and stores header info in there
    var tabId = details.tabId;
    var url = details.url;
    details.type = 'normal';

    //if tab is null... init
    if (typeof(tabs[details.tabId]) == 'undefined') {
        tabs[tabId] = {};
        tabs[tabId].isRedirect = false;
    }

    //set Header info
    tabs[tabId].lasactive = new Date().getTime();
    if (typeof(details.redirectUrl) != 'undefined') {
        tabs[tabId].isRedirect = true;
        details.type = 'redirect';
    }

    if (typeof(tabs[tabId].requestId) == 'undefined' || tabs[tabId].completed) {
        tabs[tabId].requestId = details.requestId;
        log('clearing tab['+tabId+'] headers');
        tabs[tabId].requestHeader = []; //init or reset
    }
    tabs[tabId].requestHeader.push(details);

    log('Saved tab '+tabId+'\'s '+details.type+' header information', details);

    return;
}

completed = function( details )  {
    if (debug && details.tabId > 0 && typeof(tabs[details.tabId]) != 'undefined') {
        //returns all info stored in tabs array for the current tab
        log('The following data was recorded and stored', tabs[details.tabId]); 
    }
    //adds current tab to tabs array and stores header info in there
    var tabId = details.tabId;
    var url = details.url;
    details.type = 'normal';

    //if tab is null... init
    if (typeof(tabs[details.tabId]) == 'undefined') {
        tabs[tabId] = {};
        tabs[tabId].isRedirect = false;
    }

    //set Header info
    tabs[tabId].lasactive = new Date().getTime();
    if (typeof(details.redirectUrl) != 'undefined') {
        tabs[tabId].isRedirect = true;
        details.type = 'redirect';
    }

    if (typeof(tabs[tabId].requestId) == 'undefined' || tabs[tabId].completed) {
        log('clearing tab['+tabId+'] headers');
        tabs[tabId].requestId = details.requestId;
        tabs[tabId].requestHeader = []; //init or reset
    }
    tabs[tabId].requestHeader.push(details);
    tabs[tabId].completed = true;
    log('Saved tab '+tabId+'\'s '+details.type+' header information', details);

    return;
}
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