在窗體上使用jquery日期選擇器將用戶輸入轉換爲整數日期

Question

用戶使用jquery日期選擇器輸入日期，這是以mm/dd/yyyy格式顯示的，表單用於使用列查詢MySQL數據庫（CADNO ）以整數格式記錄日期，例如-3987。

-3987是從05/09/2006（這是kepreported_date列的日期）計算出來的，這是因爲CADNO列計算從今天的日期到reported_date列的天數。

問題是，有沒有辦法在jQuery上創建一個公式，將用戶輸入的日期轉換爲MySQL服務器期望的格式？

<script> 

$（函數（）{

var dateFormat = "mm/dd/yy", 

    date_from = $("#date_from") 
    .datepicker({dateFormat: 'dd/mm/yy', 
     defaultDate: "+1w", 
     changeMonth: true, 
     changeYear: true, 
     numberOfMonths: 3 
    }) 
    .on("change", function() { 

     date_to.datepicker("option", "minDate", getDate(this)); 

    }), 

    date_to = $("#date_to").datepicker({dateFormat: 'dd/mm/yy', 
    defaultDate: "+1w", 
    changeMonth: true, 
    changeYear: true, 
    numberOfMonths: 3 
    }) 
    .on("change", function() { 

    date_from.datepicker("option", "maxDate", getDate(this)); 
    }); 
function getDate(element) { 
    var date; 
    try { 
    date = $.datepicker.parseDate(dateFormat, element.value); 
    } catch(error) { 
    date = null; 
    } 
    return date; 
} 

}）;

ts=ts&"<form method='post' action='search_prep.asp'>" 
 
ts=ts&"<tr><td>Search</td>" 
 
ts=ts&"<td><select size='1' name='search_field' id='search_field'>" 
 
for p=0 to colrows 
 
\t ts=ts&"<option value='"&cols(0,p)&"'>"&cols(1,p)&"</option>" 
 
next 
 
ts=ts&"</select></td></tr>" 
 
ts=ts&"<tr><td>For</td>" 
 
ts=ts&"<td><input type='text' size='12' name='search_text' id='search_text' >" 
 
ts=ts&"&nbsp;&nbsp;<input type='radio' name='andor' value='and'>AND" 
 
ts=ts&" <input type='radio' name='andor' value='or' "&chkandor&">OR" 
 
ts=ts&"&nbsp;&nbsp;<input type='text' size='12' name='search_text2' id='search_text2'></td>" 
 
ts=ts&"<td><input type='checkbox' name='search2' value='yes' "&chk2stage&" >2 Stage query required</td>" 
 
ts=ts&"<td>" 
 
ts=ts&"<input type='radio' name='repclr' value='radno' "&chkreprep&">Reports" 
 
ts=ts&" <input type='radio' name='repclr' value='cadno' "&chkrepclr&" >Clears " 
 
'ts=ts&" range between <select size='1' name ='date_from' id='date_from'>" -commented for datepicker 
 
ts=ts&"</tr> " 
 
ts=ts&"</td>" 
 
ts=ts& "<tr><td>Date Between</td> <td><input type='text' style='text-align:center;' size='19' name='date_from' id='date_from'>" 
 
'for i = mindate to maxdate-commented for datepicker 
 
\t 'ts=ts&"<option value="&i&">"&date() + i&"</option>"-commented for datepicker 
 
'next-commented for datepicker 
 
'ts=ts&"</select>"-commented for datepicker 
 

 
'ts=ts&"and<select size='1' name ='date_to' id='date_to'>" 
 
'for i = maxdate to mindate step -1 
 
' \t ts=ts&"<option value="&i&">"&date() + i&"</option>" 
 
'next 
 
'ts=ts&"</select>" 
 
ts=ts& "&nbsp;&nbsp;And&nbsp;&nbsp;<input type='text' style='text-align:center;' size='19' name='date_to' id='date_to'>" 
 
ts=ts&"</td>" 
 
    
 
ts=ts&"<td>&nbsp;&nbsp;<input type='submit' value='Go'></td>" 
 

 

 
ts=ts&"</tr> " 
 
ts=ts&"<input type='hidden' name='nocom' value='"&nocom&"'>" 
 
ts=ts&"<input type='hidden' name='current_tech' value='"&current_tech&"'>" 
 
ts=ts&"<input type='hidden' name='current_status' value='"&current_status&"'>" 
 
ts=ts&"<input type='hidden' name='status' value='"&status&"'>" 
 

 

 

 
ts=ts&"</form></table></div>"

Answer 1

與下面的代碼片段的JavaScript創建一個函數：

var firstDate = new Date(2006,05,09); 
var secondDate = new Date(1990,01,01); 

function (firstDate, secondDate){ 
    var oneDay = 24*60*60*1000; // hours*minutes*seconds*milliseconds 

    var diffDays = Math.round(Math.abs((firstDate.getTime() - secondDate.getTime())/(oneDay))); 
    return diffDays; 
} 

它將從給定的第二日的第一次約會返回的天數。