input输入框只可输入正数

//   deptCost为prop字段

 

 

provingNum(item,obj,index) {
  var value = this.projectJyVO[item][index][obj].toString();
  let reg = /[^\d\.]*/gi;
  value = value.replace(reg, '');
  this.projectJyVO[item][index][obj] = value;
}

//   this.projectJyVO为该table数据源