vue rules 限制用户输入为纯数字正整数,且不为0

// 表单校验
        rules: {
    
    
          classHours:[
             {
    
    "pattern": /^[0-9]*$/,"message": "只能输入正整数"}
          ],
        },

代码

<el-input v-model="form.classHours" @keyup.native="ceshi(this)" style="width:80px"/>

ceshi(val){
    
    
        this.form.classHours = this.form.classHours.replace(/\D/g, '');
		    if(this.form.classHours ==0){
    
    
			      this.form.classHours = '';
		      }
      },