Question

正如您所看到的，我是JavaScript的新手，我正在处理一个表单，当用户点击提交时知道上次更新信息时，需要发送今天的日期值。

我目前有以下代码，但似乎没有更新该字段的日期。你能帮我理解为什么吗？

＆＃13;

<script type="text/javascript">

  var datetoday = new Date();
  var months = new makeArray('Jan','Feb','Mar','Apr','May','June','July','Aug','Sept','Oct','Nov','Dec');
  var day = datetoday.getDate();
  var month = datetoday.getMonth() + 1;
  var yyyy = datetoday.getFullYear();
  var my_date = day+"-"+months[month]+"-"+yyyy;

  document.getElementById("DATE_TODAY").value = my_date;
</script>

＆＃13;

<form method="POST">
  * First Name:
  <input name="FNAME" type="text" />
  <br>
  * Last Name:
  <input name="LNAME" type="text" />
  <br>
  * Street Address:
  <input name="ADDRESS" type="text" />
  <input type="hidden" name="DATE_TODAY" id="DATE_TODAY" />
</form>

＆＃13;

Answer 1

makeArray（）是一个方法而不是一个对象，因此实例化它会给你一个错误（参见api.jquery.com/jQuery.makeArray）。

只需像这样创建你的数组，它就像你想要的那样：

<root xmlns:og="http://www.example.com" xmlns:dc="http://www.example.com" > <hits> <hits> <_index>indexname</_index> <_type>indextype</_type> <_source> <keywords>keywords-NOT-PROVIDED</keywords> <secureFlag>false</secureFlag> <description>How do you make sure your search and big data applications are well-maintained? How to free IT staff's time to focus more on business goals? Watch our expert address the top 5 managed services questions asked by customers.</description> <connectorSpecific> <discoveredBy>http://www.example.com/enterprise-search-case-studies</discoveredBy> <xslt>false</xslt> <pathFromSeed>LL</pathFromSeed> <md5>WVBM5NDACLWRN4OSXRCQUA5RJA</md5> </connectorSpecific> <title>Do I Need Managed Services for My Search and Big Data Applications?</title> <url>http://www.example.com/big-data-search-managed-services-questions</url> <UD>http://www.example.com/big-data-search-managed-services-questions</UD> <size>21467</size> <displayurl>http://www.example.com/big-data-search-managed-services-questions</displayurl> <UE>http://www.example.com/big-data-search-managed-services-questions</UE> <submitTime>2016-07-21T22:55:00+0000</submitTime> <newContent>Site Map Terms, privacy and cookie</newContent> <T>Do I Need Managed Services for My Search and Big Data Applications?</T> <sourceType>heritrix</sourceType><U>http://www.example.com/big-data-search-managed-services-questions</U> <sourceName>PIB</sourceName> </_source> <_id>http://www.example.com/big-data-search-managed-services-questions</_id> <_score>1</_score> </hits> <hits> </root>

Answer 2

您可以这样做：

var m_names = new Array("Jan", "Feb", "Mar",
  "Apr", "May", "Jun", "Jul", "Aug", "Sep",
  "Oct", "Nov", "Dec");

var d = new Date();
var curr_date = d.getDate();
var curr_month = d.getMonth();
var curr_year = d.getFullYear();
var my_date = (curr_date + "-" + m_names[curr_month] + "-" + curr_year);

document.getElementById("DATE_TODAY").value = my_date;

<input type="text" name="DATE_TODAY" id="DATE_TODAY" />

Answer 3

您的代码段抛出：

未捕获的ReferenceError：未定义makeArray

您可以使用：

{{1}}

将值设置为隐藏输入

3 个答案: