Question

我有一个与CSS一起使用的切换按钮，但是当它打开和关闭时，我需要添加一些逻辑。问题是jQuery无法读取CSS上的：after和：before，因为它们实际上不是DOM的一部分。

-切换-

<div class="onoffswitch">
    <input type="checkbox" name="onoffswitch" class="onoffswitch-checkbox" id="myonoffswitch">
    <label class="onoffswitch-label" for="myonoffswitch">
        <span id="switch-inner" class="onoffswitch-inner"></span>
        <span class="onoffswitch-switch"></span>
    </label>
</div>

-CSS-

.onoffswitch {
    position: relative; width: 78px;
    -webkit-user-select:none; -moz-user-select:none; -ms-user-select: none;
}
.onoffswitch-checkbox {
    display: none;
}
.onoffswitch-label {
    display: block; overflow: hidden; cursor: pointer;
    border: 2px solid #C2C2C2; border-radius: 20px;
}
.onoffswitch-inner {
    display: block; width: 200%; margin-left: -100%;
    transition: margin 0.3s ease-in 0s;
}
.onoffswitch-inner:before, .onoffswitch-inner:after {
    display: block; float: left; width: 50%; height: 28px; padding: 0; line-height: 28px;
    font-size: 14px; color: white; font-family: Trebuchet, Arial, sans-serif; font-weight: bold;
    box-sizing: border-box;
}
.onoffswitch-inner:before {
    content: "ON";
    padding-left: 10px;
    background-color: #5C7FE3; color: #FFFFFF;
}
.onoffswitch-inner:after {
    content: "OFF";
    padding-right: 10px;
    background-color: #EEEEEE; color: #999999;
    text-align: right;
}
.onoffswitch-switch {
    display: block; width: 18px; margin: 5px;
    background: #FFFFFF;
    position: absolute; top: 0; bottom: 0;
    right: 46px;
    border: 2px solid #C2C2C2; border-radius: 20px;
    transition: all 0.3s ease-in 0s; 
}
.onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-inner {
    margin-left: 0;
}
.onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-switch {
    right: 0px; 
}

我尝试了onClick事件，但是每次（逻辑上）单击它都会触发代码（如果多次单击则触发多次），最理想的情况是一个将是真实的并触发代码，第二次单击将触发做其他事情。

我不知道这是否可能非常简单，并且我的大脑疲倦并且无法正确思考，但是任何帮助都将是有帮助的！

Answer 1

添加click事件处理程序是正确的方法。只需查看复选框的checked属性即可了解按钮的状态（打开/关闭）。

document.getElementById("myonoffswitch").addEventListener("click", function(){
   // Test the state of the checkbox and act accordingly
   if(this.checked){
     console.log("ON");
   } else {
     console.log("OFF");
   }
});

.onoffswitch {
    position: relative; width: 78px;
    -webkit-user-select:none; -moz-user-select:none; -ms-user-select: none;
}
.onoffswitch-checkbox {
    display: none;
}
.onoffswitch-label {
    display: block; overflow: hidden; cursor: pointer;
    border: 2px solid #C2C2C2; border-radius: 20px;
}
.onoffswitch-inner {
    display: block; width: 200%; margin-left: -100%;
    transition: margin 0.3s ease-in 0s;
}
.onoffswitch-inner:before, .onoffswitch-inner:after {
    display: block; float: left; width: 50%; height: 28px; padding: 0; line-height: 28px;
    font-size: 14px; color: white; font-family: Trebuchet, Arial, sans-serif; font-weight: bold;
    box-sizing: border-box;
}
.onoffswitch-inner:before {
    content: "ON";
    padding-left: 10px;
    background-color: #5C7FE3; color: #FFFFFF;
}
.onoffswitch-inner:after {
    content: "OFF";
    padding-right: 10px;
    background-color: #EEEEEE; color: #999999;
    text-align: right;
}
.onoffswitch-switch {
    display: block; width: 18px; margin: 5px;
    background: #FFFFFF;
    position: absolute; top: 0; bottom: 0;
    right: 46px;
    border: 2px solid #C2C2C2; border-radius: 20px;
    transition: all 0.3s ease-in 0s; 
}
.onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-inner {
    margin-left: 0;
}
.onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-switch {
    right: 0px; 
}

<div class="onoffswitch">
    <input type="checkbox" name="onoffswitch" class="onoffswitch-checkbox" id="myonoffswitch">
    <label class="onoffswitch-label" for="myonoffswitch">
        <span id="switch-inner" class="onoffswitch-inner"></span>
        <span class="onoffswitch-switch"></span>
    </label>
</div>

相同按钮上的开/关事件

1 个答案: