src/forms/checkbox/template.html
<a :is="isButton?'a':'label'" @click="toggle" :class="[isButton?'btn btn-'+typeColor:'open checkbox '+typeColor,{active:checked,disabled:disabled,readonly:readonly}]">
<input v-if="name" type="hidden" :name="name" :value="checked?trueValue:falseValue" />
<span v-if="!isButton" class="icon dropdown-toggle" :class="[checked?'btn-'+typeColor:'',{bg:typeColor==='default'}]"></span>
<span v-if="!isButton&&checked&&typeColor==='default'" class="icon"></span>
<slot></slot>
</a>