我正在为日期选择器运行以下代码，并想知道如何禁用未来日期的选择，即在当前日期之后发生的任何日期。基本上我需要删除所有未来日期的链接，因此它们出现但不可点击。任何指导都非常感谢...谢谢！
// Converts a date into '12-Oct-1984' format
function getDateString(dt) {
return dt.getDate() + '-' +
['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'][dt.getMonth()] +
'-' + dt.getFullYear();
}
//Modificado por mim function getDateString(dt) { return dt.getDate() + '/' + ['1','2','3','4','5','6','7','8','9','10','11','12'][dt.getMonth()] + '/' + dt.getFullYear(); }
// Converts a date into 'July 2010' format
function getMonthYearString(dt) {
return ['January','February','March','April','May','June','July',
'August','September','October','November','December'][dt.getMonth()] +
' ' + dt.getFullYear();
}
// This is the function called when the user clicks any button
function chooseDate(e) {
var targ; // Crossbrowser way to find the target (http://www.quirksmode.org/js/events_properties.html)
if (!e) var e = window.event;
if (e.target) targ = e.target;
else if (e.srcElement) targ = e.srcElement;
if (targ.nodeType == 3) targ = targ.parentNode; // defeat Safari bug
var div = targ.parentNode.parentNode.parentNode.parentNode.parentNode; // Find the div
var idOfTextbox = div.getAttribute('datepickertextbox'); // Get the textbox id which was saved in the div
var textbox = document.getElementById(idOfTextbox); // Find the textbox now
if (targ.value=='<' || targ.value=='>') { // Do they want the change the month?
createCalendar(div, new Date(targ.getAttribute('date')));
return;
}
textbox.value = targ.getAttribute('date'); // Set the selected date
div.parentNode.removeChild(div); // Remove the dropdown box now
}
// Parse a date in d-MMM-yyyy format
function parseMyDate(d) {
if (d=="") return new Date('NotADate'); // For Safari
var a = d.split('-');
if (a.length!=3) return new Date(d); // Missing 2 dashes
var m = -1; // Now find the month
if (a[1]=='Jan') m=0;
if (a[1]=='Feb') m=1;
if (a[1]=='Mar') m=2;
if (a[1]=='Apr') m=3;
if (a[1]=='May') m=4;
if (a[1]=='Jun') m=5;
if (a[1]=='Jul') m=6;
if (a[1]=='Aug') m=7;
if (a[1]=='Sep') m=8;
if (a[1]=='Oct') m=9;
if (a[1]=='Nov') m=10;
if (a[1]=='Dec') m=11;
if (m<0) return new Date(d); // Couldn't find the month
return new Date(a[2],m,a[0],0,0,0,0);
}
// This creates the calendar for a given month
function createCalendar(div, month) {
var idOfTextbox = div.getAttribute('datepickertextbox'); // Get the textbox id which was saved in the div
var textbox = document.getElementById(idOfTextbox); // Find the textbox now
var tbl = document.createElement('table');
var topRow = tbl.insertRow(-1);
var td = topRow.insertCell(-1);
var lastMonthBn = document.createElement('input');
lastMonthBn.type='button'; // Have to immediately set the type due to IE
td.appendChild(lastMonthBn);
lastMonthBn.value='<';
lastMonthBn.onclick=chooseDate;
lastMonthBn.setAttribute('date',new Date(month.getFullYear(),month.getMonth()-1,1,0,0,0,0).toString());
var td = topRow.insertCell(-1);
td.colSpan=5;
var mon = document.createElement('input');
mon.type='text';
td.appendChild(mon);
mon.value = getMonthYearString(month);
mon.size=15;
mon.disabled='disabled';
var td = topRow.insertCell(-1);
var nextMonthBn = document.createElement('input');
nextMonthBn.type='button';
td.appendChild(nextMonthBn);
nextMonthBn.value = '>';
nextMonthBn.onclick=chooseDate;
nextMonthBn.setAttribute('date',new Date(month.getFullYear(),month.getMonth()+1,1,0,0,0,0).toString());
var daysRow = tbl.insertRow(-1);
daysRow.insertCell(-1).innerHTML="Mon";
daysRow.insertCell(-1).innerHTML="Tue";
daysRow.insertCell(-1).innerHTML="Wed";
daysRow.insertCell(-1).innerHTML="Thu";
daysRow.insertCell(-1).innerHTML="Fri";
daysRow.insertCell(-1).innerHTML="Sat";
daysRow.insertCell(-1).innerHTML="Sun";
// Make the calendar
var selected = parseMyDate(textbox.value); // Try parsing the date
var today = new Date();
date = new Date(month.getFullYear(),month.getMonth(),1,0,0,0,0); // Starting at the 1st of the month
var extras = (date.getDay() + 6) % 7; // How many days of the last month do we need to include?
date.setDate(date.getDate()-extras); // Skip back to the previous monday
while (1) { // Loop for each week
var tr = tbl.insertRow(-1);
for (i=0;i<7;i++) { // Loop each day of this week
var td = tr.insertCell(-1);
var inp = document.createElement('input');
inp.type = 'button';
td.appendChild(inp);
inp.value = date.getDate();
inp.onclick = chooseDate;
inp.setAttribute('date',getDateString(date));
if (date.getMonth() != month.getMonth()) {
if (inp.className) inp.className += ' ';
inp.className+='othermonth';
}
if (date.getDate()==today.getDate() && date.getMonth()==today.getMonth() && date.getFullYear()==today.getFullYear()) {
if (inp.className) inp.className += ' ';
inp.className+='today';
}
if (!isNaN(selected) && date.getDate()==selected.getDate() && date.getMonth()==selected.getMonth() && date.getFullYear()==selected.getFullYear()) {
if (inp.className) inp.className += ' ';
inp.className+='selected';
}
date.setDate(date.getDate()+1); // Increment a day
}
// We are done if we've moved on to the next month
if (date.getMonth() != month.getMonth()) {
break;
}
}
// At the end, we do a quick insert of the newly made table, hopefully to remove any chance of screen flicker
if (div.hasChildNodes()) { // For flicking between months
div.replaceChild(tbl, div.childNodes[0]);
} else { // For creating the calendar when they first click the icon
div.appendChild(tbl);
}
}
// This is called when they click the icon next to the date inputbox
function showDatePicker(idOfTextbox) {
var textbox = document.getElementById(idOfTextbox);
// See if the date picker is already there, if so, remove it
x = textbox.parentNode.getElementsByTagName('div');
for (i=0;i<x.length;i++) {
if (x[i].getAttribute('class')=='datepickerdropdown') {
textbox.parentNode.removeChild(x[i]);
return false;
}
}
// Grab the date, or use the current date if not valid
var date = parseMyDate(textbox.value);
if (isNaN(date)) date = new Date();
// Create the box
var div = document.createElement('div');
div.className='datepickerdropdown';
div.setAttribute('datepickertextbox', idOfTextbox); // Remember the textbox id in the div
createCalendar(div, date); // Create the calendar
insertAfter(div, textbox); // Add the box to screen just after the textbox
return false;
}
// Adds an item after an existing one
function insertAfter(newItem, existingItem) {
if (existingItem.nextSibling) { // Find the next sibling, and add newItem before it
existingItem.parentNode.insertBefore(newItem, existingItem.nextSibling);
} else { // In case the existingItem has no sibling after itself, append it
existingItem.parentNode.appendChild(newItem);
}
}
// This is called when the page loads, it searches for inputs where the class is 'datepicker'
function datePickerInit() {
// Search for elements by class
var allElements = document.getElementsByTagName("*");
for (i=0; i<allElements.length; i++) {
var className = allElements[i].className;
if (className=='datepicker' || className.indexOf('datepicker ') != -1 || className.indexOf(' datepicker') != -1) {
// Found one! Now lets add a datepicker next to it
var a = document.createElement('a');
a.href='#';
a.className="datepickershow"
a.setAttribute('onclick','return showDatePicker("' + allElements[i].id + '")');
var img = document.createElement('img');
img.src='data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAIAAACQkWg2AAAABGdBTUEAAK/INwWK6QAAABh0RVh0U29mdHdhcmUAUGFpbnQuTkVUIHYzLjM2qefiJQAAAdtJREFUOE+Vj+9PUnEUxvPvar3xja96Q1hGEKG0ubZqbfHCNqIVA4eYLAwFp0LYD4iIJEdeRGGZwDAEcUOn9oNIvPcGgjBQfHE69/YFihe1zs59du7d83nOuR0AcOq/CgEqWbaHDqaD+clF1rLAmija6MsZ5vb0s9nB1xm168s9x67y6Y7q2TaXjo8tVKjUTv7Zt61pAkwt/UA3zFwFuxysV2BKAuYeMAnBcBaGukDdCaozaLg5sUGAiQDLA3IIDIBfAfO34N118PaDRwYvRfBcCMrTaLg2liTAOEW3NjzpBZsMpqUwKQaLCMYvwGMhjArQIDfGCTDqy3EAX47lfVTnCo3qCnOzJ8IpW6pJR2IEGHn7/bBaR5MLO8y8CtPuKO2J0nMfGdKr+5uZ4kVdhAD6N99K1bo7ynB5vHpj3AZ0NxWBbs0KAbTur8VKfTbGeFcbkc1sfnBHuA1CzTIB7js/H5SPffFW3q9sau2PDdLhxkl3X+wiQCVYf4Jt3h1Itmb8iBvEusZJd2a2CuXjxXUWU5dSnAZ5/b0QkOobgMKWzh8eMcXaXr6aYSqfcuXtbAkdbS3RfSD/MGDfvGFO9ZuSfY/ilx/GLumi57Vhgfp9W597ECJA2/a/v/4ENLpYKsDo3kgAAAAASUVORK5CYII=';
img.title='Show calendar';
a.appendChild(img);
insertAfter(a, allElements[i]);
}
}
}
// Hook myself into the page load event
if (window.addEventListener) { // W3C standard
window.addEventListener('load', datePickerInit, false);
} else if (window.attachEvent) { // Microsoft
window.attachEvent('onload', datePickerInit);
}