<el-input id = "usernames" v-model="form.username" v-bind:style = {"disabled:isDisabled"}></el-input>
data(){
  return{
    isDisabled:true
  }
}

$(document).ready(function(){
 $('.submitButton').hide();
 $('.reviseButton').click(function () {
  $(this).hide();
  $('.submitButton').show();
  $('#username').attr("disabled",true);
  $('#qq').addAttr("disabled");
 })
 })

$(document).ready(function(){
 $('.submitButton').hide();
 $('.reviseButton').click(function () {
  $(this).hide();
  $('.submitButton').show();
  $('#usernames').removeClass("is-disabled");
   $('#qq').addClass("is-disabled");
 })
 })