How to operate vue input input to verify the alphanumeric combination and the length is less than 30

This time I will show you how to operate vue input to input a verification alphanumeric combination and the length is less than 30. How to operate vue input to enter a verification alphanumeric combination and the length is less than 30. What are the precautions? are as follows. This is a practical case, let’s take a look at it.

The following code is for everyone to share with you the vue input verification alphanumeric combination and the length is less than 30. The specific code is as follows:

<Input v-model="form.glhm" placeholder="请输入关联交易号" style="width:240px" @on-blur="validateJyh(form.glhm)"></Input> 
validateJyh(glhm){//校验关联交易号 
    var reg = /^[A-Za-z0-9]{1,30}$/; 
    if(!reg.test(glhm)){ 
     this.$Message.error("请输入字母或数字组成的交易关联号"); 
     this.form.glhm = &#39;&#39;; 
    } 
   },

Look below in Vue.Js The el-input box can only be used to enter numbers and limit the number of digits. It also limits Chinese input and paste

var tr = document.getElementById("Id1"), // 取得ID为Id1的tr对象
 inps = tr.getElementsByTagName('input'); // 从tr 对象中获取所有input对象
for(var i = 0, len = inps.length; i < len; i++) {
 inps[i].value = &#39;&#39;; // 将每一个input的value置为空
}
document.getElementById("t").getElementsByTagName(&#39;input&#39;)[0].value=&#39;&#39;;

How to enter Chinese and leave it blank

<el-input
@change="checkNo(searchForm.msel.mselTotalConsumTimes)"
type = "text"
onkeypress="return event.keyCode>=48&&event.keyCode<=57"
size="small"
:maxlength="6"
style="width: 120px"
v-model="searchForm.msel.mselTotalConsumTimes"></el-input>
 次
</el-col>
checkNo(value){
let reg = /^[1-9]\d*$/;
if (value) {
if (value >
999999 || new
RegExp(reg).test(value) ==
false) {
setTimeout(() 
=> {
this.searchForm.msel.mselTotalConsumTimes =&#39;&#39;;
   }, 500);
}
}
},

I believe I have read this article You have mastered the case method. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

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