jQuery 简单的日期选择器验证
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Simple datepicker validation
提问by Lee Collings
Can someone help me write a function for showing a line of text (preferably by showing a css class) for a jquery datepicker after someone has clicked a date?
有人可以帮我编写一个函数，用于在某人单击日期后为 jquery 日期选择器显示一行文本（最好通过显示 css 类）？
The notice has to appear IF the date picked falls between TODAY and 21 DAYS FROM TODAY.
如果选择的日期介于今天和今天之后的 21 天之间，则必须显示该通知。
It's the function I need help with, as I don't know how to write it.
这是我需要帮助的功能，因为我不知道如何编写它。
<script>
$(function() {
$( "#delivery_date" ).datepicker({
dateFormat: "dd/mm/yy",
});
});
</script>
<input type="text" id="delivery_date" name="delivery_date" required />
回答by narrowtux
You might be able to validate it using date.js, it has a fluent API which makes it very easy to express your conditions.
您可以使用date.js来验证它，它有一个流畅的 API，可以很容易地表达您的条件。
Example code might be:
示例代码可能是：
var enteredDate = $("#delivery_date").prop("value");
var parsed = Date.parse(enteredDate);
var start = Date.today();
var end = Date.today().add(21).days();
if (!parsed.between(start, end)) {
alert("Date is valid");
} else {
alert("Date is not valid");
}
回答by JTC
U can use onClosein datepicker
你可以onClose在日期选择器中使用
$(function() {
$( "#date" ).datepicker({
dateFormat: "dd/mm/yy",
onClose: function() {
valid();
}
});
});
回答by vladkras
just use onSelectproperty when you init datepicker
onSelect初始化日期选择器时只需使用属性
$( "#delivery_date" ).datepicker({
dateFormat: "dd/mm/yy",
minDate : new Date(),
onSelect: function(str) {
var lastDate = new Date(),
nums = str.split("/"),
userDate = new Date(nums[2], nums[1]-1, nums[0]), // reverse date
period = 21;
lastDate.setDate(lastDate.getDate()+period);
if (userDate<lastDate) {
// notify
alert("inside 21 days period");
}
}
});
try FIDDLE
尝试小提琴
