当两个日期选择器字段具有值时，激活按钮 [英] Activate button when two datepickers fields have values

问题描述

我的问题来自这篇文章

我想禁用一个提交按钮，直到用日期选择器填充两个输入.使用标准文字输入时，我没有遇到任何麻烦，但它不适用于我的日期选择器.我强烈怀疑这与日期选择器ID有关.

首先是我想做的一个示例(没有日期选择器).那我想用日期选择器做什么.

使用文本输入(有效):

身体:

<form method=post>
<input type="text" id='first_name'>
<input type="text" id='second_name'>
<input type="submit" value="Submit" id="submit" disabled>

JQuery:

<script>
$(':text').keyup(function() {
if($('#first_name').val() != "" && $('#second_name').val() != "") {
   $('#submit').removeAttr('disabled');
} else {
   $('#submit').attr('disabled', true);   
}
});</script>

---

使用日期选择器(不起作用):

头:

<script>
$(function() {
    $( "#datepicker1" ).datepicker({ dateFormat: 'dd/mm/yy' ,  minDate: new Date(2016, 04 - 1, 21), maxDate : new Date(2016, 05 - 1, 04)});
    $( "#datepicker2" ).datepicker({ dateFormat: 'dd/mm/yy' ,  minDate: new Date(2017, 04 - 1, 21), maxDate : new Date(2017, 05 - 1, 04)});
</script>

身体:

<form method=post>
<input type="text" id='datepicker1'>
<input type="text" id='datepicker2'>
<input type="submit" value="Submit" id="submit" disabled>

JQuery:

<script>
$(':text').keyup(function() {
if($('#datepicker1').val() != "" && $('#datepicker2').val() != "") {
   $('#submit').removeAttr('disabled');
} else {
   $('#submit').attr('disabled', true);   
}
});</script>

我猜问题出在keyup上.通常，当您从日期选择器中选择一个日期时，不会调用keyup.

当您在日期选择器文本字段中手动插入日期时，它将起作用.尝试将change与keyup事件一起使用

<script>
$(':text').on('change keyup', function() {
if($('#datepicker1').val() != "" && $('#datepicker2').val() != "") {
   $('#submit').removeAttr('disabled');
} else {
   $('#submit').attr('disabled', true);   
}
});
</script>

希望这对您有帮助...

My Question derivate from this post

I would like to disable a submit button until two input are filled in with a datepicker. I have no trouble doing it with standart text input but it's not working with my datepickers. I strongly suspect it's about the datepickers id's.

First is an example of what I want to do (without datepickers). Then what I'm trying to do with datepickers.

With text input (working) :

Body :

<form method=post>
<input type="text" id='first_name'>
<input type="text" id='second_name'>
<input type="submit" value="Submit" id="submit" disabled>

JQuery :

<script>
$(':text').keyup(function() {
if($('#first_name').val() != "" && $('#second_name').val() != "") {
   $('#submit').removeAttr('disabled');
} else {
   $('#submit').attr('disabled', true);   
}
});</script>

---

With the datepickers (not working) :

Head :

<script>
$(function() {
    $( "#datepicker1" ).datepicker({ dateFormat: 'dd/mm/yy' ,  minDate: new Date(2016, 04 - 1, 21), maxDate : new Date(2016, 05 - 1, 04)});
    $( "#datepicker2" ).datepicker({ dateFormat: 'dd/mm/yy' ,  minDate: new Date(2017, 04 - 1, 21), maxDate : new Date(2017, 05 - 1, 04)});
</script>

Body :

<form method=post>
<input type="text" id='datepicker1'>
<input type="text" id='datepicker2'>
<input type="submit" value="Submit" id="submit" disabled>

JQuery :

<script>
$(':text').keyup(function() {
if($('#datepicker1').val() != "" && $('#datepicker2').val() != "") {
   $('#submit').removeAttr('disabled');
} else {
   $('#submit').attr('disabled', true);   
}
});</script>

解决方案

I guess problem is with keyup.Normally when you select a date from datepicker keyup is not called.

It will work when you manually insert a date in datepicker text field. Try using change with keyup event as

<script>
$(':text').on('change keyup', function() {
if($('#datepicker1').val() != "" && $('#datepicker2').val() != "") {
   $('#submit').removeAttr('disabled');
} else {
   $('#submit').attr('disabled', true);   
}
});
</script>

Hope this helps...

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