vue中数组变异方法—

    return {
      audios: [],  
  }         

 btn3Click:function(){
                var itemLen=this.audios.length;
             	 this.$set(this.audios,itemLen,{url :this.voiceInfo.voiceUrl });
            }

原文：https://blog.csdn.net/qq_30455841/article/details/78666571