现在有这么个场景。input输入框可以输入多个ip。每个ip以逗号分隔。必须对输入的ip进行正则校验确认输入的ip合法性。
在methods中写ip正则校验方法
 validateIPAddress  (rule, value, callback)  {
						                    let regexp = /^((2(5[0-5]|[0-4]\d))|[0-1]?\d{1,2})(\.((2(5[0-5]|[0-4]\d))|[0-1]?\d{1,2})){3}$/;
						                    let valdata = value.split(',');
						                    let isCorrect = true;
						                    if (valdata.length) {
						                        for (let i = 0; i < valdata.length; i++) {
						                             if (regexp.test(valdata[i]) == false) {
						                                 isCorrect = false;
						                             }
						                        }
						                    }
						      
						                    if (value == '') {
						                         return callback(new Error('请输入iP地址'));
						                    } else if (!isCorrect) {
						                         callback(new Error('请输入正确对ip地址'));
						                    } else {
						                         callback()
						                    }
						                 },


<el-form-item label="ip:" :label-width="formLabelWidth" prop="ip"  :rules="[{ required: true, validator:validateIPAddress, trigger: 'blur' }]">
<el-input size="mini" v-model="form.ip" autocomplete="off"></el-input>
</el-form-item>