vue在element-ui的对话框的编辑控件回车时让焦点下一控件

Vue.directive(‘enterToNext‘,{
  inserted:function(el){
    console.log("enterToNext...")
    //let frm = el.querySelector(‘.el-form‘);
    let inputs = el.querySelectorAll(‘input‘);
    console.log(inputs);
    //绑定回写事件
    for( var i = 0 ;i < inputs.length ; i++ ){
      inputs[i].setAttribute("keyFocusIndex",i);
      inputs[i].addEventListener(‘keyup‘, (ev) => {               
        if (ev.keyCode === 13) {
          let targetTo = ev.srcElement.getAttribute(‘keyFocusTo‘);
          if(targetTo){
            this.$refs[targetTo].$el.focus();
          }else{
            var attrIndex = ev.srcElement.getAttribute(‘keyFocusIndex‘);          
            var ctlI = parseInt(attrIndex);
            if(ctlI<inputs.length-1)
              inputs[ctlI+1].focus();   
          }  
        }
      });
    }
    
  },
});