jquery.validate prompts error message location method_jquery

The example in this article describes the jquery.validate prompt error message location method. Share it with everyone for your reference, the details are as follows:

I haven’t used the jquery.validate.js plug-in for a long time, and I almost forgot about it. Alas, good things should always be taken out and looked at. Today I used jquery.validate to make a small thing. I encountered a problem, which is the location of the error message. If you know it, it is very simple. I have encountered it before, but I forgot it. Mark it now. If I forget it in the future, I will look back. As the saying goes, a good memory is worse than a bad writing.

As an example, everyone will know what’s going on.

rules: {
name:{
required:true,
rangelength:[1,20]
},
validateCode: {
required:true,
number:true,
rangelength:[5,5]
}
},
messages: {
name: {
required: "请输入命令名",
rangelength: jQuery.format("长度请控制在{0} ~ {1}")
},
validateCode: {
required: "请输入验证码",
number: "请输入数字",
rangelength: jQuery.format("长度必须是5位")
}
},
success: function(label) {
label.addClass("error checked");
},
submitHandler: function(form) {
if($("#RegionId").val() == '0'){
$("#citySelect").attr("class","error").html('请选择区域').show();
$("#RegionId").attr("class","error");
}else{
$("#RegionId").attr("class","valid");
$("#citySelect").attr("class","valid").html('success').show();
form.submit();
}
}
});

In the above code, I did not add a method to store the error message. Let’s take a look at the effect

<td>
<input type="text" maxlength="30" value="" id="name" name="name">
<label for="name" generated="true">请输入命令名</label>
//错误信息会自动根在输入框的后面。
</td>

If we add the errorPlacement method of error message location, let’s see what the effect looks like.

rules: {
name:{
required:true,
rangelength:[1,20]
},
validateCode: {
required:true,
number:true,
rangelength:[5,5]
}
},
messages: {
name: {
required: "请输入命令名",
rangelength: jQuery.format("长度请控制在{0} ~ {1}")
},
validateCode: {
required: "请输入验证码",
number: "请输入数字",
rangelength: jQuery.format("长度必须是5位")
}
},
errorPlacement: function(error, element) { //错误信息位置设置方法
error.appendTo( element.parent().next() ); //这里的element是录入数据的对象
},
success: function(label) {
label.addClass("error checked");
},
submitHandler: function(form) {
if($("#RegionId").val() == '0'){
$("#citySelect").attr("class","error").html('请选择区域').show();
$("#RegionId").attr("class","error");
}else{
$("#RegionId").attr("class","valid");
$("#citySelect").attr("class","valid").html('success').show();
form.submit();
}
}
});

Let’s see the effect

<tr>
<th><label for="name" id="lname"><code title="必填">*</code>命令名称</label></th>
<td><input type="text" maxlength="30" value="" id="name" name="name"></td>
<td><label for="name" generated="true">请输入命令名</label></td>
//错误信息跑到这儿来了，
</tr>

It’s simple enough. Even simple things will be forgotten if you don’t use them for a long time.

Readers who are interested in more content related to jQuery plug-ins can check out the special topic of this site: "Summary of common jQuery plug-ins and usage"

I hope this article will be helpful to everyone in jQuery programming.