小贝子编程

如何使用“全部显示/无”按钮执行此操作



如果你点击你现在看不到的图像，另一个div会出现一些信息，在该div里面还有另一个你也看不到的图像，通过点击它会出现更多的信息。

并且有一个按钮可以显示所有/隐藏所有信息。

我想要实现的是，当任何弹出文本(通过单击图片出现(已经可见时，然后通过单击Show all按钮，它保持原样，只有那些不可见的文本才会出现。 

function popupD1() {
    var popup = document.getElementById("myPopupD1");
    popup.classList.toggle("show");
    var image =  document.getElementById("arrow1");
    if (image.getAttribute('src') == "arrow.png") {
        image.src = "arrowL.png";
    } else {
        image.src = "arrow.png";
    }
    var D1S=document.getElementById("D1S");
    if(D1S.textContent=="Show info"){
      D1S.textContent="Hide info";
    } else {
      D1S.textContent="Show info";
    }
}
function D1moreinfo() {
    var hide=document.getElementById("D1moreinfo");
    if(hide.style.display ==="block") {
        hide.style.display="none";
    } else{
        hide.style.display="block";
    }
    var image =  document.getElementById("arrowL1");
    if (image.getAttribute('src') == "arrowL.png") {
        image.src = "arrow.png";
    } else {
        image.src = "arrowL.png";
    }
}
function popupD2() {
  var popup = document.getElementById("myPopupD2");
  popup.classList.toggle("show");
  var image =  document.getElementById("arrow1");
  if (image.getAttribute('src') == "arrow.png") {
      image.src = "arrowL.png";
  } else {
      image.src = "arrow.png";
  }
  var D1S=document.getElementById("D2S");
  if(D1S.textContent=="Show info") {
    D1S.textContent="Hide info";
  } else {
    D1S.textContent="Show info";
  }
}
function D2moreinfo() {
  var hide=document.getElementById("D2moreinfo");
  if(hide.style.display ==="block") {
    hide.style.display="none";
  } else{
    hide.style.display="block";
  }
  var image =  document.getElementById("arrowL1");
  if (image.getAttribute('src') == "arrowL.png") {
      image.src = "arrow.png";
  } else {
      image.src = "arrowL.png";
  }
}
function showall(){
  var D1 = document.getElementById("myPopupD1");
  var D2 = document.getElementById("myPopupD2");
  var D1M = document.getElementById("D1moreinfo");
  var D2M = document.getElementById("D2moreinfo");
  D1.classList.toggle("show");
  D2.classList.toggle("show");
  if(D1M.style.display ==="block") {
    D1M.style.display="none";
  } else{
    D1M.style.display="block";
  }
  if(D2M.style.display ==="block") {
    D2M.style.display="none";
  } else{
    D2M.style.display="block";
  }
  var D1S=document.getElementById("show");
  if(D1S.textContent=="Show all"){
    D1S.textContent="Hide all";
  } else {
    D1S.textContent="Show all";
  }
}
.D1 {  
  border:1px solid;
  border-color:red;
  width:450px;
  height:220px;
  margin-top:10px;
}
#D1button {
  border:none;
  overflow:hidden;
  background-color:transparent;
  display:block;
  position:absolute;
  left:390px;
  top:175px;
  color:red;
}
.popupD1 {
    position: relative;
    display: inline-block;
    cursor: pointer;
}
.popupD1 .popuptextD1 {
    visibility: hidden;
    width: 250px;
  height:210px;
  color: red;
    text-align: center;
    border-radius: 6px;
    padding: 8px 0;
  left:370px;
    position: absolute;
    z-index: 0;
    top: 20px;
    background-color: gray;
    margin-left: 100px;
}
.popupD1 .popuptextD1:hover {
  transition:1.5s;
  background-image:url(BF4B9.jpg);
    color:red;
}
.popupD1 .show {
    visibility: visible;
    -webkit-animation: fadeIn;
    animation: fadeIn 1s;
}
#D1moreinfo {
  background-color: transparent;
  border-radius: 6px;
  width:200px;
  height:relative;
  display:none;
  position:absolute;
  top:-5px;
  left:255px;
}
.D2 {  
  border:1px solid;
  border-color:red;
  width:450px;
  height:220px;
  margin-top:10px;
}
#D2button {
  border:none;
  overflow:hidden;
  background-color:transparent;
  display:block;
  position:absolute;
  left:390px;
  top:290px;
  color:red;
}
.popupD2 {
    position: relative;
    display: inline-block;
    cursor: pointer;
}
.popupD2 .popuptextD2 {
    visibility: hidden;
    width: 250px;
  height:210px;
  color: red;
    text-align: center;
    border-radius: 6px;
    padding: 8px 0;
  left:370px;
    position: absolute;
    z-index: 0;
    top: 20px;
    background-color: gray;
    margin-left: 100px;
}
.popupD2 .popuptextD2:hover {
    transition:1.5s;
    background-image:url(BF4B9.jpg);
    color:red;
}
.popupD2 .show {
    visibility: visible;
    -webkit-animation: fadeIn;
    animation: fadeIn 1s;
}
#D2moreinfo {
  background-color: transparent;
  border-radius: 6px;
  width:200px;
  height:relative;
  display:none;
  position:absolute;
  top:-5px;
  left:255px;
}
.showall {
  overflow:hidden;
  background-color:transparent;
  position:absolute;
  top:-4px;
  left:335px;
  position:fixed;
  border-radius:10px;
}
<div class="D1">
    <div class="popupD1">
        <span class="popuptextD1" id="myPopupD1"> 
            *A long text that I'm not gonna paste here*<br>
            <button id="morebutton1" onclick="D1moreinfo()"><img id="arrowL1" src="arrow.png"/></button>
            <div id="D1moreinfo">
                <ul>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                 </ul>
            </div>
        </span>
    </div>
    <img id="D1K" src="XY.png"/>
    <button id="D1button" onclick="popupD1()"><img id="arrow1" src="arrow.png"/><br><span id="D1S">Show info</span></button>
</div>
<div class="D2">
    <div class="popupD2">
        <span class="popuptextD2" id="myPopupD2">
            *A long text that I'm not gonna paste here*<br>
            <button id="morebutton1" onclick="D2moreinfo()"><img id="arrowL1" src="arrow.png"/></button>
            <div id="D2moreinfo">
                <ul>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                </ul>
            </div>
        </span>
    </div>
    <img id="D2K" src="XY.png"/>
    <button id="D2button" onclick="popupD2()"><img id="arrow1" src="arrow.png"/><br><span id="D2S">Show info</span></button>
</div>
<div class="showall">
    <button onclick="showall()" title="Hide/show all"><span id="show">Show all</span></button>
</div>

问题是，当你"showAll"时，你切换了"show"类，而不管元素处于什么当前状态。所以你应该做的第一件事是检查需要什么行为，如果有任何元素没有显示，你想显示所有元素，如果所有元素都显示，你想隐藏元素。见下文。

function popupD1() {
    var popup = document.getElementById("myPopupD1");
    popup.classList.toggle("show");
    var image = document.getElementById("arrow1");
    if (image.getAttribute('src') == "arrow.png") {
        image.src = "arrowL.png";
    } else {
        image.src = "arrow.png";
    }
    				
    var D1S = document.getElementById("D1S");
    if (D1S.textContent == "Show info"){
        D1S.textContent = "Hide info";
    } else {
        D1S.textContent="Show info";
    }
}
function D1moreinfo() {
    var hide = document.getElementById("D1moreinfo");
    if (hide.style.display ==="block"){
        hide.style.display = "none";
    } else {
        hide.style.display = "block";
    }
    
    var image =  document.getElementById("arrowL1");
    if (image.getAttribute('src') == "arrowL.png") {
        image.src = "arrow.png";
    } else {
        image.src = "arrowL.png";
    }
}
    
function popupD2() {
    var popup = document.getElementById("myPopupD2");
    popup.classList.toggle("show");
    var image = document.getElementById("arrow1");
    if (image.getAttribute('src') == "arrow.png") {
        image.src = "arrowL.png";
    } else {
        image.src = "arrow.png";
    }
    				
    var D1S=document.getElementById("D2S");
    if (D1S.textContent == "Show info") {
        D1S.textContent = "Hide info";
    } else {
        D1S.textContent = "Show info";
    }
}
    
function D2moreinfo(){
    var hide=document.getElementById("D2moreinfo");
    if (hide.style.display ==="block"){
        hide.style.display="none";
    } else {
        hide.style.display="block";
    }
    	
    var image = document.getElementById("arrowL1");
    if (image.getAttribute('src') == "arrowL.png") {
        image.src = "arrow.png";
    } else {
        image.src = "arrowL.png";
    }
}
    
function showall() {
    var D1 = document.getElementById("myPopupD1");
    var D2 = document.getElementById("myPopupD2");
    var D1M = document.getElementById("D1moreinfo");
    var D2M = document.getElementById("D2moreinfo");
    // First we check if all elements are showing
    var allShowing = (D1.classList.contains("show") && 
                    D2.classList.contains("show"));
    // Then we allways hide the elements
    D1.classList.remove("show");
    D2.classList.remove("show");
    // If any element was hidden, we show all of them
    if (!allShowing) {
        D1.classList.add("show");
        D2.classList.add("show");
    }
    
    if (D1M.style.display === "block") {
        D1M.style.display = "none";
    } else {
        D1M.style.display = "block";
    }
    if (D2M.style.display ==="block") {
        D2M.style.display="none";
    } else {
        D2M.style.display="block";
    }
}
    
.D1 {  
    border: 1px solid;
    border-color: red;
    width: 450px;
    height: 220px;
    margin-top: 10px;
}
#D1button {
    border: none;
    overflow: hidden;
    background-color: transparent;
    display: block;
    position: absolute;
    left: 390px;
    top: 175px;
    color: red;
}
.popupD1 {
    position: relative;
    display: inline-block;
    cursor: pointer;
}
.popupD1 .popuptextD1 {
    visibility: hidden;
    width: 250px;
    height: 210px;
    color: red;
    text-align: center;
    border-radius: 6px;
    padding: 8px 0;
    left: 370px;
    position: absolute;
    z-index: 0;
    top: 20px;
    background-color: gray;
    margin-left: 100px;
}
.popupD1 .popuptextD1:hover {
    transition: 1.5s;
    background-image: url(BF4B9.jpg);
    color: red;
}
.popupD1 .show {
    visibility: visible;
    -webkit-animation: fadeIn;
    animation: fadeIn 1s;
}
#D1moreinfo {
    background-color: transparent;
    border-radius: 6px;
    width: 200px;
    height: relative;
    display: none;
    position: absolute;
    top: -5px;
    left: 255px;
}
  
.D2 {  
    border: 1px solid;
    border-color: red;
    width: 450px;
    height: 220px;
    margin-top: 10px;
}
#D2button {
    border: none;
    overflow: hidden;
    background-color: transparent;
    display: block;
    position: absolute;
    left: 390px;
    top: 290px;
    color: red;
}
.popupD2 {
    position: relative;
    display: inline-block;
    cursor: pointer;
}
.popupD2 .popuptextD2 {
    visibility: hidden;
    width: 250px;
    height: 210px;
    color: red;
    text-align: center;
    border-radius: 6px;
    padding: 8px 0;
    left: 370px;
    position: absolute;
    z-index: 0;
    top: 20px;
    background-color: gray;
    margin-left: 100px;
}
.popupD2 .popuptextD2:hover {
    transition: 1.5s;
    background-image: url(BF4B9.jpg);
    color: red;
}
.popupD2 .show {
    visibility: visible;
    -webkit-animation: fadeIn;
    animation: fadeIn 1s;
}
#D2moreinfo {
    background-color: transparent;
    border-radius: 6px;
    width: 200px;
    height: relative;
    display: none;
    position: absolute;
    top: -5px;
    left: 255px;
}
.showall {
    overflow: hidden;
    background-color: transparent;
    position: absolute;
    top: -4px;
    left: 335px;
    position: fixed;
    border-radius: 10px;
}
<div class="D1">
    <div class="popupD1">
        <span class="popuptextD1" id="myPopupD1">
             *A long text that I'm not gonna paste here*
            <br/>
            <button id="morebutton1" onclick="D1moreinfo()">
                <img id="arrowL1" src="arrow.png"/>
            </button>
            <div id="D1moreinfo">
                <ul>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                </ul>
            </div>
        </span>
    </div>
    <img id="D1K" src="XY.png"/>
    <button id="D1button" onclick="popupD1()">
        <img id="arrow1" src="arrow.png"/>
        <br/>
        <span id="D1S">Show info</span>
    </button>
</div>
<div class="D2">
    <div class="popupD2">
        <span class="popuptextD2" id="myPopupD2">
            *A long text that I'm not gonna paste here*<br>
            <button id="morebutton1" onclick="D2moreinfo()">
                <img id="arrowL1" src="arrow.png"/>
            </button>
            <div id="D2moreinfo">
                <ul>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                    <li>XY</li>
                </ul>
            </div>
        </span>
    </div>
    <img id="D2K" src="XY.png"/>
    <button id="D2button" onclick="popupD2()">
        <img id="arrow1" src="arrow.png"/>
        <br/>
        <span id="D2S">Show info</span>
    </button>
</div>
<div class="showall">
    <button onclick="showall()" title="Hide/show all">
        <span id="show">Show all</span>
    </button>
</div>

简单的解决方案是从showAll()函数中删除 if 语句，并始终将所有显示列为block 

  function showall(){
    var D1 = document.getElementById("myPopupD1");
    var D2 = document.getElementById("myPopupD2");
    var D1M = document.getElementById("D1moreinfo");
    var D2M = document.getElementById("D2moreinfo");
    D1.classList.toggle("show");
    D2.classList.toggle("show");
    D1M.style.display="block";
    D2M.style.display="block";  
    }

此外，您可以制作hideAll()功能来隐藏所有显示。您可以在此过程中切换显示/隐藏按钮以更改正在调用的函数。

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