JavaScript中的书签以切换Gmail对话视图

问题描述

我想要一个bookmarklet快速切换Gmail对话视图。

从，我有：

  javascript：window.location.href =https://mail.google.com/mail/u/0/#settings/general\";setTimeout(function(){document.querySelector(\"div.AO table tbody tr ：nth-​​child（8）table：nth-​​child（2）td：nth-​​child（1）input：not（：checked））。click（）; document.querySelector（[guidedhelpid = save_changes_button]）。 click（）;}，1000）; 
  

问题是我需要两个书签。

选择器 .AO tr：第n个孩子（8）表：第n孩子（1）输入选择对话开启按钮;和 .AO tr：nth-​​child（8）表：nth-​​child（2）输入选择会话关闭。

是否有一种方法可以让一个小书签检查未被检查的小书签？ （如果我运行的是错误的，我会在控制台中看到无法读取属性'click'of null 。）

解决方案

您可以简单地为您的书签添加一个条件，检查是否

  document.querySelector （div.AO table tbody tr：nth-​​child（8）table：n-type-type（2）input）。 
 $ b 
不是 null ：
  window.location.href =https://mail.google.com+ window.location.pathname +＃settings / general; 
 sBase =div.AO table tbody tr：n-child（8）table：nth-​​of-type（; 
 sOn = sBase +1）input; 
 sOff = sBase +2）input; 
 $ b $ setTimeout（function（）{
 if（document.querySelector（sOff）.checked）
 document.querySelector（sOn）.click（）; 
 else 
 document.querySelector（sOff）.click（）; 
 document.querySelector（[guidedhelpid = save_changes_button]）。click（）; 
}，1000）; 
  
给：
  javascript：window.location.href =https://mail.google.com+ window.location.pathname +＃settings / general; sBase =div.AO table tbody tr：n-child （8）table：nth-​​of-type（; sOn = sBase +1）input; sOff = sBase +2）input; setTimeout（function（）{if（document.querySelector（sOff）.checked）document。 1000）
  
 
I want a bookmarklet to quickly toggle the Gmail conversation view on and off.
Starting from @seahorsepip's solution, I have:
javascript:window.location.href = "https://mail.google.com/mail/u/0/#settings/general";setTimeout(function(){document.querySelector("div.AO table tbody tr:nth-child(8) table:nth-child(2) td:nth-child(1) input:not(:checked)").click();document.querySelector("[guidedhelpid=save_changes_button]").click();}, 1000);
The problem is that I need two bookmarklets.
Selector .AO tr:nth-child(8) table:nth-child(1) input selects the "Conversation ON" button; and .AO tr:nth-child(8) table:nth-child(2) input selects "Conversation OFF".
Is there a way to have one bookmarklet that will check the one that is not checked? (If I run the "wrong" one I see Cannot read property 'click' of null in console.)
 解决方案 
You could simply add a condition to your bookmarklet, checking if
document.querySelector("div.AO table tbody tr:nth-child(8) table:nth-of-type(2) input").checked
isn't null:
window.location.href = "https://mail.google.com" + window.location.pathname + "#settings/general";
sBase = "div.AO table tbody tr:nth-child(8) table:nth-of-type(";
sOn = sBase + "1) input";
sOff = sBase + "2) input";

setTimeout(function(){
    if (document.querySelector(sOff).checked)
        document.querySelector(sOn).click();
    else
        document.querySelector(sOff).click();
    document.querySelector("[guidedhelpid=save_changes_button]").click();
}, 1000);
Giving:
javascript:window.location.href="https://mail.google.com"+window.location.pathname+"#settings/general";sBase="div.AO table tbody tr:nth-child(8) table:nth-of-type(";sOn=sBase+"1) input";sOff=sBase+"2) input";setTimeout(function(){if(document.querySelector(sOff).checked) document.querySelector(sOn).click();else document.querySelector(sOff).click();document.querySelector("[guidedhelpid=save_changes_button]").click()},1000)
                        
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