<script src="js/vue.min.js"></script>
<script>
var app = new Vue({
el: '.container',
data: {
message: ''
},
watch: {
message: {
handler: function(after,before){
if (after.length > before.length) {
setTimeout(function(){
document.querySelector('.nice-input').classList.add('shake');
setTimeout(function(){
document.querySelector('.nice-input').classList.remove('shake');
},300);
},200);
}
}
}
},
computed: {
message2: function(){
return this.message.split('');
}
}
});</script>
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