css

/* slider checkbox */

.wrap-btn-onoff .switch{position:relative;display:inline-block;width:40px;height:20px;vertical-align:middle}

.wrap-btn-onoff .switch input{display:none}

.wrap-btn-onoff .slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ccc;-webkit-transition:.4s;transition:.4s}

.wrap-btn-onoff .slider:before{position:absolute;content:"";height:15px;width:15px;left:2px;bottom:2px;background-color:#fff;-webkit-transition:.4s;transition:.4s}

.wrap-btn-onoff input.btn-onoff:checked + .slider{background-color:#2196F3}

.wrap-btn-onoff input.btn-onoff:focus + .slider{box-shadow:0 0 1px #2196F3}

.wrap-btn-onoff input.btn-onoff:checked + .slider:before{-webkit-transform:translateX(20px);-ms-transform:translateX(20px);transform:translateX(20px)}

.wrap-btn-onoff .slider.round{border-radius:34px}

.wrap-btn-onoff .slider.round:before{border-radius:50%}

.wrap-btn-onoff > .text{margin:0;display:inline-block;height:20px;line-height:20px}

html

<div class="wrap-btn-onoff">

    <label class="switch">

      <input type="checkbox" class="btn-onoff">

      <span class="slider round"></span>

    </label>

    <span class="text">OFF</span><span class="text" style="display:none;">ON</span>

</div>

jquery

$(function() {

    $(document).on('click', '.btn-onoff', function() {

        $('.wrap-btn-onoff > .text').toggle();

    });

});