Question

我使用下面脚本的几个下拉框，一切都有效，除了点击窗外，这只能在最后一个按钮上工作，我知道有一种方法来分隔window.onclick函数但是我不知道怎么样，尝试过一些东西，却找不到太多关于此的信息。

非常感谢任何帮助！

<script>
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction20() {
    document.getElementById("myDropdown20").classList.toggle("show");
}

// Close the dropdown if the user clicks outside of it
window.onclick = function(event20) {
  if (!event.target.matches('.dropbtn20')) {

    var dropdowns20 = document.getElementsByClassName("dropdown-content20");
    var i;
    for (i = 0; i < dropdowns20.length; i++) {
      var openDropdown20 = dropdowns20[i];
      if (openDropdown20.classList.contains('show')) {
        openDropdown20.classList.remove('show');
      }
    }
  }
}
</script>
<script>
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction21() {
    document.getElementById("myDropdown21").classList.toggle("show");
}

// Close the dropdown if the user clicks outside of it
window.onclick = function(event21) {
  if (!event.target.matches('.dropbtn21')) {

    var dropdowns21 = document.getElementsByClassName("dropdown-content21");
    var i;
    for (i = 0; i < dropdowns21.length; i++) {
      var openDropdown21 = dropdowns21[i];
      if (openDropdown21.classList.contains('show')) {
        openDropdown21.classList.remove('show');
      }
    }
  }
}
</script>

当点击按钮和下拉列表外，右侧的那个将关闭，但左边的那个不会.. https://jsfiddle.net/c94gLhqm/

Answer 1

我想改变你曾经的窗口onclick方法

<script>
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction20() {
    document.getElementById("myDropdown20").classList.toggle("show");
}

/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction21() {
    document.getElementById("myDropdown21").classList.toggle("show");
}

// Close the dropdown if the user clicks outside of it
window.onclick = function(event20) {
  if (!event.target.matches('.dropbtn20')) {

    var dropdowns20 = document.getElementsByClassName("dropdown-content20");
    var i;
    for (i = 0; i < dropdowns20.length; i++) {
      var openDropdown20 = dropdowns20[i];
      if (openDropdown20.classList.contains('show')) {
        openDropdown20.classList.remove('show');
      }
    }
  } else if (!event.target.matches('.dropbtn21')) {

    var dropdowns21 = document.getElementsByClassName("dropdown-content21");
    var i;
    for (i = 0; i < dropdowns21.length; i++) {
      var openDropdown21 = dropdowns21[i];
      if (openDropdown21.classList.contains('show')) {
        openDropdown21.classList.remove('show');
      }
    }
  }
}
</script>

Answer 2

以上评论的结果。为清楚起见，在此处添在HTML中引入了onblur

＆＃13;

/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction() {
    document.getElementById("myDropdown").classList.toggle("show");
}

function myFunction2() {
    document.getElementById("myDropdown2").classList.toggle("show");
}

＆＃13;

.dropbtn {
    background-color: #85c445;
    color: white;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
    width: 170px;
}

.dropbtn:hover, .dropbtn:focus {
    background-color: #3e8e41;
}

.dropdown {
    position: relative;
    display: inline-block;
    z-index: 6
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    overflow: auto;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

.dropdown-content a {
    color: black;
    font-size: 16px;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown a:hover {background-color: #f1f1f1}

.show {display:block;}

.dropbtn2 {
    background-color: #85c445;
    color: white;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
    width: 170px;
}

.dropbtn2:hover, .dropbtn2:focus {
    background-color: #3e8e41;
}

.dropdown2 {
    position: relative;
    display: inline-block;
    z-index: 6
}

.dropdown-content2 {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    overflow: auto;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

.dropdown-content2 a {
    color: black;
    font-size: 16px;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown2 a:hover {background-color: #f1f1f1}

.show {display:block;}

＆＃13;

<div class="dropdown">
<button  onblur="myFunction()" onclick="myFunction()" class="dropbtn">Example</button>
<div id="myDropdown" class="dropdown-content">
<a href="">1</a>
<a href="">2</a>
<a href="">3</a>
<a href="">4</a>
<a href="">5</a>
</div>
</div>

<div class="dropdown2">
<button onblur="myFunction2()" onclick="myFunction2()" class="dropbtn2">Example</button>
<div id="myDropdown2" class="dropdown-content2">
<a href="">1</a>
<a href="">2</a>
<a href="">3</a>
<a href="">4</a>
<a href="">5</a>
</div>
</div>

＆＃13;

Javascript两个window.onlick函数发生冲突

2 个答案: