var myTween = new TweenLite.to('.box', 2, {width:100, height:100, paused:true, onComplete:textcc}); function textcc(){ $("span").text("Good!!"); } $('.btn_start').on('click',function(){ myTween.resume(); })
<button class="btn_start" type="button">Start!</button> <br><br> <div class="box"></div> <span></span>
.box{width:50px;height:50px;background-color:#000} .btn_start{background-color:#c0b8ff}