blocks|key|1349158|text|只是扩展融合的答案。此扩展方法使用jQuery验证插件工作。它将验证日期和数字|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349159|jQuery.validator.addMethod("greaterThan",+
function(value,+element,+params)+{

++++if+(!/Invalid%7CNaN/.test(new+Date(value)))+{
++++++++return+new+Date(value)+>+new+Date($(params).val());
++++}

++++return+isNaN(value)+&&+isNaN($(params).val())+
++++++++%7C%7C+(Number(value)+>+Number($(params).val()));+
},'Must+be+greater+than+{0}.');|code-block|syntax|javascript|1349160|要使用它：|1349161|$("#EndDate").rules('add',+{+greaterThan:+"#StartDate"+});|1349162|或|1349163|$("form").validate({
++++rules:+{
++++++++EndDate:+{+greaterThan:+"#StartDate"+}
++++}
});|1349164|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Just expanding off fusions answer. this extension method works using the jQuery validate plugin. It will validate dates and numbers

<pre><code>jQuery.validator.addMethod("greaterThan", 
function(value, element, params) {

 if (!/Invalid|NaN/.test(new Date(value))) {
 return new Date(value) &gt; new Date($(params).val());
 }

 return isNaN(value) &amp;&amp; isNaN($(params).val()) 
 || (Number(value) &gt; Number($(params).val())); 
},'Must be greater than {0}.');
</code></pre>

To use it:

<pre><code>$("#EndDate").rules('add', { greaterThan: "#StartDate" });
</code></pre>

or

<pre><code>$("form").validate({
 rules: {
 EndDate: { greaterThan: "#StartDate" }
 }
});
</code></pre>

blocks|key|1564409|text|var+startDate+=+new+Date($('#startDate').val());
var+endDate+=+new+Date($('#endDate').val());

if+(startDate+<+endDate){
//+Do+something
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1564410|我想这应该可以了。|unstyled|1564411|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>var startDate = new Date($('#startDate').val());
var endDate = new Date($('#endDate').val());

if (startDate &lt; endDate){
// Do something
}
</code></pre>

That should do it I think

blocks|key|1564485|text|参考jquery.validate.js和jquery-1.2.6.js。将startDate类添加到开始日期文本框中。将endDate类添加到“结束日期”文本框中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564486|将此脚本块添加到您的页面：-|1564487|<script+type="text/javascript">
++++$(document).ready(function()+{
++++++++$.validator.addMethod("endDate",+function(value,+element)+{
++++++++++++var+startDate+=+$('.startDate').val();
++++++++++++return+Date.parse(startDate)+<=+Date.parse(value)+%7C%7C+value+==+"";
++++++++},+"*+End+date+must+be+after+start+date");
++++++++$('#formId').validate();
++++});
</script>|code-block|syntax|javascript|1564488|希望这能有所帮助:-)|1564489|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Reference jquery.validate.js and jquery-1.2.6.js.
Add a startDate class to your start date textbox.
Add an endDate class to your end date textbox.

Add this script block to your page:-

<pre><code>&lt;script type="text/javascript"&gt;
 $(document).ready(function() {
 $.validator.addMethod("endDate", function(value, element) {
 var startDate = $('.startDate').val();
 return Date.parse(startDate) &lt;= Date.parse(value) || value == "";
 }, "* End date must be after start date");
 $('#formId').validate();
 });
&lt;/script&gt;
</code></pre>

Hope this helps :-)

blocks|key|1349299|text|所以我需要这个规则是可选的，上面的建议都不是可选的。如果我调用该方法，即使我将其设置为需要一个值，它也会显示为required。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349300|这是我的决定：|1349301|++$("#my_form").validate({
++++rules:+{
++++++"end_date":+{
++++++++required:+function(element)+{return+($("#end_date").val()!="");},
++++++++greaterStart:+"#start_date"
++++++}
++++}
++});//validate()|code-block|syntax|javascript|1349302|我的addMethod没有Mike+E.的最高评分答案那么强大，但我正在使用JqueryUI日期选择器强制选择日期。如果有人能告诉我如何确保日期是数字，并让方法是可选的，那就太好了，但现在这个方法对我有效：|offset|length|style|CODE|1349303|jQuery.validator.addMethod("greaterStart",+function+(value,+element,+params)+{
++++return+this.optional(element)+%7C%7C+new+Date(value)+>=+new+Date($(params).val());
},'Must+be+greater+than+start+date.');|1349304|entityMap^0|0|0|0|2|9|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

So I needed this rule to be optional and none of the above suggestions are optional. If I call the method it is showing as required even if I set it to needing a value.

This is my call:

<pre><code> $("#my_form").validate({
 rules: {
 "end_date": {
 required: function(element) {return ($("#end_date").val()!="");},
 greaterStart: "#start_date"
 }
 }
 });//validate()
</code></pre>

My <code>addMethod</code> is not as robust as Mike E.'s top rated answer, but I'm using the JqueryUI datepicker to force a date selection. If someone can tell me how to make sure the dates are numbers and have the method be optional that would be great, but for now this method works for me:

<pre><code>jQuery.validator.addMethod("greaterStart", function (value, element, params) {
 return this.optional(element) || new Date(value) &gt;= new Date($(params).val());
},'Must be greater than start date.');
</code></pre>

blocks|key|1564463|text|文本字段中的日期值可以通过jquery的.val()方法获取，如下所示|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564464|var+datestr1+=+$('#datefield1-id').val();
var+datestr2+=+$('#datefield2-id').val();|code-block|syntax|javascript|1564465|我强烈建议在比较日期字符串之前先对它们进行解析。Javascript的Date对象有一个-Method()解析，但它只支持美国日期格式(YYYY/MM/DD)。它返回从unix时代开始以来的毫秒数，因此您可以简单地使用>或<比较您的值。|1564466|如果你想要不同的格式(例如ISO8661)，你需要求助于正则表达式或免费的date.js库。|1564467|如果你想成为超级用户，你可以使用jquery+ui日期选择器而不是文本字段。有一个datepicker变体，允许输入日期范围：|1564468|http://www.filamentgroup.com/lab/date_range_picker_using_jquery_ui_16_and_jquery_ui_css_framework/|offset|length|1564469|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|2Q|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Z|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|10|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|11|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|12|8|@]|9|@$O|13|P|14|1|15]]|A|$]]|$1|Q|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|N]]]]

The date values from the text fields can be fetched by jquery's .val() Method like

<pre><code>var datestr1 = $('#datefield1-id').val();
var datestr2 = $('#datefield2-id').val();
</code></pre>

I'd strongly recommend to parse the date strings before comparing them. Javascript's Date object has a parse()-Method, but it only supports US date formats (YYYY/MM/DD). It returns the milliseconds since the beginning of the unix epoch, so you can simply compare your values with > or &lt;.

If you want different formats (e.g. ISO 8661), you need to resort to regular expressions or the free date.js library. 

If you want to be super user-fiendly, you can use jquery ui datepickers instead of textfields. There is a datepicker variant that allows to enter date ranges:

<a href="http://www.filamentgroup.com/lab/date_range_picker_using_jquery_ui_16_and_jquery_ui_css_framework/" rel="noreferrer">http://www.filamentgroup.com/lab/date_range_picker_using_jquery_ui_16_and_jquery_ui_css_framework/</a>

blocks|key|1564823|text|在javascript/jquery中，大多数开发人员使用的是字符串形式的From+&+To+date比较，而不是转换为日期格式。比较from+date大于to+date的最简单方法是。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564824|Date.parse(fromDate)+>+Date.parse(toDate)|code-block|syntax|javascript|1564825|始终在比较之前解析from和to+date，以获得准确的结果|1564826|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

In javascript/jquery most of the developer uses From &amp; To date comparison which is string, without converting into date format.
The simplest way to compare from date is greater then to date is.

<pre><code>Date.parse(fromDate) &gt; Date.parse(toDate)
</code></pre>

Always parse from and to date before comparison to get accurate results

blocks|key|1349327|text|jQuery('#from_date').on('change',+function(){
++++var+date+=+$(this).val();
++++jQuery('#to_date').datetimepicker({minDate:+date});++
});|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1349328|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>jQuery('#from_date').on('change', function(){
 var date = $(this).val();
 jQuery('#to_date').datetimepicker({minDate: date}); 
});
</code></pre>

blocks|key|1349198|text|我喜欢Franz所说的，因为我正在使用:P|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349199|var+date_ini+=+new+Date($('#id_date_ini').val()).getTime();
var+date_end+=+new+Date($('#id_date_end').val()).getTime();
if+(isNaN(date_ini))+{
//+error+date_ini;
}
if+(isNaN(date_end))+{
//+error+date_end;
}
if+(date_ini+>+date_end)+{
//+do+something;
}|code-block|syntax|javascript|1349200|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I like what Franz said, because is what I'm using :P

<pre><code>var date_ini = new Date($('#id_date_ini').val()).getTime();
var date_end = new Date($('#id_date_end').val()).getTime();
if (isNaN(date_ini)) {
// error date_ini;
}
if (isNaN(date_end)) {
// error date_end;
}
if (date_ini &gt; date_end) {
// do something;
}
</code></pre>

blocks|key|1564766|text|$(document).ready(function(){
+++$("#txtFromDate").datepicker({
++++++++minDate:+0,
++++++++maxDate:+"%2B60D",
++++++++numberOfMonths:+2,
++++++++onSelect:+function(selected)+{
++++++++++$("#txtToDate").datepicker("option","minDate",+selected)
++++++++}
++++});

++++$("#txtToDate").datepicker({
++++++++minDate:+0,
++++++++maxDate:"%2B60D",
++++++++numberOfMonths:+2,
++++++++onSelect:+function(selected)+{
+++++++++++$("#txtFromDate").datepicker("option","maxDate",+selected)
++++++++}
++++});
});|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1564767|或访问此link|unstyled|offset|length|1564768|entityMap|0|LINK|mutability|MUTABLE|url|http://www.jquerybyexample.net/2012/01/end-date-should-not-be-greater-than.html^0|0|4|4|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@$G|S|H|T|1|U]]|A|$]]|$1|I|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

<pre><code>$(document).ready(function(){
 $("#txtFromDate").datepicker({
 minDate: 0,
 maxDate: "+60D",
 numberOfMonths: 2,
 onSelect: function(selected) {
 $("#txtToDate").datepicker("option","minDate", selected)
 }
 });

 $("#txtToDate").datepicker({
 minDate: 0,
 maxDate:"+60D",
 numberOfMonths: 2,
 onSelect: function(selected) {
 $("#txtFromDate").datepicker("option","maxDate", selected)
 }
 });
});
</code></pre>

Or Visit to this <a href="http://www.jquerybyexample.net/2012/01/end-date-should-not-be-greater-than.html" rel="nofollow">link</a>

blocks|key|1349205|text|function+endDate(){
++++$.validator.addMethod("endDate",+function(value,+element)+{
++++++var+params+=+'.startDate';
++++++++if($(element).parent().parent().find(params).val()!=''){
+++++++++++if+(!/Invalid%7CNaN/.test(new+Date(value)))+{
+++++++++++++++return+new+Date(value)+>+new+Date($(element).parent().parent().find(params).val());
++++++++++++}
+++++++return+isNaN(value)+&&+isNaN($(element).parent().parent().find(params).val())+%7C%7C+(parseFloat(value)+>+parseFloat($(element).parent().parent().find(params).val()))+%7C%7C+value+==+"";++++++++++++++
++++++}else{
++++++++return+true;
++++++}
++++++},jQuery.format('must+be+greater+than+start+date'));

}

function+startDate(){
++++++++++++$.validator.addMethod("startDate",+function(value,+element)+{
++++++++++++var+params+=+'.endDate';
++++++++++++if($(element).parent().parent().parent().find(params).val()!=''){
+++++++++++++++++if+(!/Invalid%7CNaN/.test(new+Date(value)))+{
++++++++++++++++++return+new+Date(value)+<+new+Date($(element).parent().parent().parent().find(params).val());
++++++++++++}
+++++++++++return+isNaN(value)+&&+isNaN($(element).parent().parent().find(params).val())+%7C%7C+(parseFloat(value)+<+parseFloat($(element).parent().parent().find(params).val()))+%7C%7C+value+==+"";
+++++++++++++++++}
++++++++++++++++++++++++else{
+++++++++++++++++++++return+true;
}

++++},+jQuery.format('must+be+less+than+end+date'));
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1349206|希望这能有所帮助:)|unstyled|1349207|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>function endDate(){
 $.validator.addMethod("endDate", function(value, element) {
 var params = '.startDate';
 if($(element).parent().parent().find(params).val()!=''){
 if (!/Invalid|NaN/.test(new Date(value))) {
 return new Date(value) &gt; new Date($(element).parent().parent().find(params).val());
 }
 return isNaN(value) &amp;&amp; isNaN($(element).parent().parent().find(params).val()) || (parseFloat(value) &gt; parseFloat($(element).parent().parent().find(params).val())) || value == ""; 
 }else{
 return true;
 }
 },jQuery.format('must be greater than start date'));

}

function startDate(){
 $.validator.addMethod("startDate", function(value, element) {
 var params = '.endDate';
 if($(element).parent().parent().parent().find(params).val()!=''){
 if (!/Invalid|NaN/.test(new Date(value))) {
 return new Date(value) &lt; new Date($(element).parent().parent().parent().find(params).val());
 }
 return isNaN(value) &amp;&amp; isNaN($(element).parent().parent().find(params).val()) || (parseFloat(value) &lt; parseFloat($(element).parent().parent().find(params).val())) || value == "";
 }
 else{
 return true;
}

 }, jQuery.format('must be less than end date'));
}
</code></pre>

Hope this will help :)

blocks|key|1564857|text|首先，使用split函数拆分两个输入框的值。然后以相反的顺序连接相同的内容。在concat+nation之后，将其解析为整数。然后比较if语句中的两个值。Eg.1>2018年11月20日2>2018年11月21日|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564858|在拆分和合并用于比较的新值20181120和20181121之后，比较相同。|1564859|var+date1+=+$('#datevalue1').val();
var+date2+=+$('#datevalue2').val();
var+d1+=+date1.split("-");
var+d2+=+date2.split("-");

d1+=+d1[2].concat(d1[1],+d1[0]);
d2+=+d2[2].concat(d2[1],+d2[0]);

if+(parseInt(d1)+>+parseInt(d2))+{

++++$('#fromdatepicker').val('');
}+else+{

}|code-block|syntax|javascript|1564860|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

First you split the values of two input box by using split function.
then concat the same in reverse order.
after concat nation parse it to integer.
then compare two values in in if statement.
 eg.1>20-11-2018 2>21-11-2018

after split and concat new values for comparison 20181120 and 20181121 the after that compare the same. 

<pre><code>var date1 = $('#datevalue1').val();
var date2 = $('#datevalue2').val();
var d1 = date1.split("-");
var d2 = date2.split("-");

d1 = d1[2].concat(d1[1], d1[0]);
d2 = d2[2].concat(d2[1], d2[0]);

if (parseInt(d1) &gt; parseInt(d2)) {

 $('#fromdatepicker').val('');
} else {

}
</code></pre>

blocks|key|1564878|text|这应该是可行的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564879|​|1564880|$.validator.addMethod("endDate",+function(value,+element)+{
++++++++++++var+startDate+=+$('#date_open').val();
++++++++++++return+Date.parse(startDate)+<=+Date.parse(value)+%7C%7C+value+==+"";
++++++++},+"*+End+date+must+be+after+start+date");|code-block|syntax|javascript|1564881|1564882|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|K|$]]

this should work

<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>$.validator.addMethod("endDate", function(value, element) {
 var startDate = $('#date_open').val();
 return Date.parse(startDate) &lt;= Date.parse(value) || value == "";
 }, "* End date must be after start date");</code></pre>
</div>
</div>

blocks|key|1349459|text|您可以在两个不同的日期执行类似这样的警报。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349460|$('#end_date').on('change',+function(){
+++++++++++++var+startDate+=+$('#start_date').val();
+++++++++++++var+endDate+=+$('#end_date').val();
+++++++++++++if+(endDate+<+startDate){
+++++++++++++++++alert('End+date+should+be+greater+than+Start+date.');
++++++++++++++++$('#end_date').val('');
+++++++++++++}
+++++++++});|code-block|syntax|javascript|1349461|您可以在日历上执行，它将自动禁用以前的日期。|1349462|$("#start_date").datepicker({
++++++++++++dateFormat:+'dd/mm/yy',
++++++++++++onSelect:+function(date)+{
++++++++++++++++$("#end_date").datepicker('option',+'minDate',+date);
++++++++++++}
++++++++});
$("#end_date").datepicker({+dateFormat:+'dd/mm/yy'+});|1349463|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

you can do on two different dates for alert like this.
<pre><code>$('#end_date').on('change', function(){
 var startDate = $('#start_date').val();
 var endDate = $('#end_date').val();
 if (endDate &lt; startDate){
 alert('End date should be greater than Start date.');
 $('#end_date').val('');
 }
 });
</code></pre>
either you can perform on calendar it will automatically disable previous dates.
<pre><code>$(&quot;#start_date&quot;).datepicker({
 dateFormat: 'dd/mm/yy',
 onSelect: function(date) {
 $(&quot;#end_date&quot;).datepicker('option', 'minDate', date);
 }
 });
$(&quot;#end_date&quot;).datepicker({ dateFormat: 'dd/mm/yy' });
</code></pre>

blocks|key|1348924|text|如果确保格式是正确的YYYY/MM/DD，并且两个字段之间完全相同，则可以使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1348925|if+(startdate+>+enddate)+{
+++alert('error'
}|code-block|syntax|javascript|1348926|作为字符串比较|1348927|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If the format is guaranteed to be correct YYYY/MM/DD and exactly the same between the two fields then you can use:

<pre><code>if (startdate &gt; enddate) {
 alert('error'
}
</code></pre>

As a string comparison

How do I check/validate in jQuery whether end date [textbox] is greater than start date [textbox]?

Validate that end date is greater than start date with jQuery

jQuery

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