使用jquery.validate.js插件进行条件表单验证 [英] conditional form validation using jquery.validate.js plugin

问题描述

谁能告诉我如何编写一条规则来验证用户是否选择/填充了一个单选按钮选项和(最佳)文本字段?仅当未选择复选框选项#myradiogroup并且文本字段#email2为空时，该规则才给出消息.

Can anyone tell me how to write a rule that validates if neither one radio button option nor the (optinal) textfield is chosen/filled by a user? The rule should only give a message if no checkbox option #myradiogroup is chosen AND the textfield #email2 is empty.

我的表单代码:

<form name="my" id="myForm" action="" method="post">

<input type="radio" name="myradiogroup" id="myradiogroup" value="option 1" /> option 1
<input type="radio" name="myradiogroup" id="myradiogroup" value="option 2" /> option 2

<label for="emailNew4use">this is an optional field:</label>
<input type="text" name="email2" id="email2" />

<input type="submit" value="send">

</form>

推荐答案

jQuery Validate中的required参数可以使用一个函数.

The required parameter in jQuery Validate can take a function.

$('#myForm').validate({
    rules: {
        email2: {
            required: function(element) {
                if ($('[name="myradiogroup"]:checked').length) {
                    return false;
                } else {
                    return true;
                }
            }
        },
        myradiogroup: {
            required: function(element) {
                if ($('#email2').val()) {
                    return false;
                } else {
                    return true;
                }
            }
        }
    }
});

---

这是 Sparky

$('#myForm').validate({
    rules: {
        email2: {
            required: function(element) {
                return !$('[name="myradiogroup"]:checked').length;
            }
        },
        myradiogroup: {
            required: function(element) {
                return !$('#email2').val();
            }
        }
    }
});

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