CSS\HTML -如何向CSS "content“属性中添加Ionicons？

Question

我使用自定义的switch切换(从这里)，我想添加一个图标，而不是普通文本。当我将Ionicons代码粘贴到CSS content属性时，它显示为一个矩形(没有找到字符\content)。我怎么通过这个？

编辑:我忘了添加，我已经包含了来自CDN的CSS。

JSfiddle

切换CSS：

.onoffswitch {
    position: relative; 
    width: 108px;
    -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 #999999; 
    border-radius: 30px;
}
.onoffswitch-inner {
    display: block; 
    width: 200%; 
    margin-left: -100%;
    -moz-transition: margin 0.3s ease-in 0s; 
    -webkit-transition: margin 0.3s ease-in 0s;
    -o-transition: margin 0.3s ease-in 0s; 
    transition: margin 0.3s ease-in 0s;
}
.onoffswitch-inner:before, .onoffswitch-inner:after {
    display: block; 
    float: left; width: 50%; 
    height: 40px; padding: 0; 
    line-height: 38px;
    font-size: 14px; 
    color: white; 
    font-weight: bold;
    -moz-box-sizing: border-box; 
    -webkit-box-sizing: border-box; 
    box-sizing: border-box;
}
.onoffswitch-inner:before {
    content: "ON";
    padding-left: 10px;
    background-color: #FFFFFF; 
    color: #BABABA;
}
.onoffswitch-inner:after {
    content: "\f425"; /* <--------THE ICON GOES HERE */
    padding-right: 10px;
    background-color: #8035A7; 
    color: #FFFFFF;
    text-align: right;
}
.onoffswitch-switch {
    display: block; 
    width: 41px; margin: -1.5px;
    background: #FFFFFF;
    border: 2px solid #999999; 
    border-radius: 50px;
    position: absolute; 
    top: 0; 
    bottom: 0; 
    right: 66px;
    -moz-transition: all 0.3s ease-in 0s; 
    -webkit-transition: all 0.3s ease-in 0s;
    -o-transition: all 0.3s ease-in 0s; 
    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; 
}

HTML：

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

Answer 1

您缺少了一个导入"Ionicons“字体面板的@font-face声明，加上.onoffswitch-inner:after声明没有指定font-family: "Ionicons";。

我从他们的css中提取了Ionicons字体声明，并将其添加到分叉式jsFiddle中。

Answer 2

你省略了字体-家庭属性..。当您将字体图标中的代码使用到CSS content属性中时，您必须这样做：

.custom-icon:after {
    content: "\f425";
    font-family: "the name of the font icon you are using";
}

就这样:P

Answer 3

使用离子V2

要在css中使用https://ionicframework.com/docs/v2/ionicons/中的离子图标，只需这样做即可。

.yourclass {
        font-family: "Ionicons";
        content: "\f3d1";
}

这将打印： <ion-icon name="arrow-forward"></ion-icon>

您可以在以下文件中找到内容十六进制：

node_modules/ionic-angular/css/ionic.css:

node_modules/ionic-angular/css/ionic.dark.css