<input type="text" class="input-text" placeholder="請填寫項目名" :value="info.title" @input="handleInput" data-model="title">

handleInput(e) {

   var that = this;

   var name = e.currentTarget.dataset.model;

   that.$set(that, name, e.detail.value);

},

//數組

handleInput(e) {

   var that = this;

   var name = e.currentTarget.dataset.model;

   that.$set(that.info, name, e.detail.value);   

},