我在这个链接上绑定了两个事件处理程序:
<a href='#' id='elm'>Show Alert</a>
JavaScript的:
$(function()
{
$('#elm').click(_f);
$('#elm').mouseover(_m);
});
function _f(){alert('clicked');}
function _m(){alert('mouse over');}
有没有办法得到一个元素绑定的所有事件的列表,在这种情况下元素与id="elm"？
var user = {
Name: "Some user",
Methods: {
ShowGreetings: function() {
// at this point i want to access variable "Name",
//i dont want to use user.Name
// **please suggest me how??**
},
GetUserName: function() { }
}
}
如何压缩asp.net mvc应用程序发送的输出？
CSS:
.blue
{
width:200px;
height:200px;
background-color:blue;
color:#000000;
overflow:auto;
}
JavaScript的:
function addChar() {
$('.blue').append('some text ');
}
HTML:
<div id='blue1' class="blue"></div><br />
<a href='javascript:void(0)' onclick='addChar()'>Add</a>
div id='blue1'有overflow属性设置为auto.我想在发生溢出时检测溢出.
var _sel1 = $('.red');
var _sel2 = $('.yellow');
如何在不使用不同选择器的情况下将它们合并为一个？
// I don't want to do it this way
var _sel3=$('.red,.yellow') or $('.red').add('.yellow');
我有DOM是这样的:
<a href='javascript:void(0)' id='link1'>Element with events bound initially</a>
<a href='javascript:void(0)' id='link2'>Element to which events are bound in future</a>
这个javascript:
$(function(){
$('#link1').bind('click',function(){alert('do something to make me happy');})
});
现在将来有一段时间我想将link1上绑定的所有事件复制到link2.我这样做如下所示,如果可能或可用,请建议一些更好的方法.
var _elmEvents = $(#link1).data('events');
if (_elmEvents) {
$.each(_elmEvents, function (event, handlers) {
$.each(handlers, function (j, handler) {
$('#link2').bind(event, handler);
});
});
}
我正在使用jquery并做这样的事情
DOM:
<div id="parent"></div>
JS:
var _doSomeThing = function()
{
//some codes
}
$(function()
{
// appending div and binding methods to span
$('#parent').append('<span>1</span>');
$('#parent').append('<span>2</span>');
$('#parent span').bind('click', _doSomeThing);
});
function _clearDiv()
{
//clear div
$('#parent').html('');
}
//sometime in future, call clear div
_clearDiv();
现在我的问题是,做绑定事件,DOM然后只是从DOM导致内存泄漏中删除元素？
如果是,如何解决这个问题？
注意:下面的代码仅用于演示,我使用的是jQuery和jQuery validate插件.
假设我有一个包含两个字段的表单(电子邮件和库存号):
<form action="/something" method="post" id="demoForm">
Inventory No: <input type="text" class="required" name="inventory_no" />
Email: <input type="text" class="required" name="email" />
<input type='submit' value='submit' />
</form>
绑定插件形成:
jQuery(function(){
jQuery('#demoForm').validate();
});
//handle user submit
jQuery('#demoForm').bind('submit', function (e) {
e.preventDefault();
if (jQuery(e.target).valid()) {
//form is valid submit request thru ajax
jQuery.ajax({
/*more options here*/
success: function (data) {
/*
Server process request and finds that, email is already in use
and inventory number is invalid
so it sends data in some format may …下面我创建了一个演示实体来演示我正在寻找的东西:
public class User : IValidatableObject
{
public string Name { get; set; }
[Required]
public DateTime CreationDate { get; set; }
public DateTime UpdatedOnDate { get; set; }
public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
if(Name = "abc")
{
yield return new ValidationResult("please choose any other name then abc", new[] { "Name" });
}
}
}
我正在实现IValidatableObject接口来使这个实体SelfValidating.
现在正在创建新的用户iam这样做
User u = new User();
u.Name = "Some name";
u.CreationDate = DateTime.Now
dbContext.Users.Add(u);
dbContext.SaveChanges();
我打算u.CreationDate=DateTime.Now;在User课堂内转移代码.并实现一个接口,该接口提供将在保存之前和验证之后执行的方法
// class …