JSFIDDLE:http://jsfiddle.net/nqsfoqzz/10/
我无法弄清楚下面代码中this
选择器的内容。如果我调用函数removeAndClose(elem);如点击事件结束时所示(当前已注释掉),$(this)的值是正确的,即.removeleg
。但我需要根据弹出窗口中的click事件来控制removeAndClose()函数,这是click事件中$ noticeMessage的原因,以及函数noticePopup()的原因。我已将removeAndClose(elem)添加到Confirm
按钮,这是this
问题出现的地方。
因为我在$ noticeMessage elem is undefined
中使用了removeAndClose()函数。
我已经整理了一个显示问题的jsfiddle:http://jsfiddle.net/nqsfoqzz/10/要查看CONFIRM按钮,请先点击“添加LEG'按钮。然后点击“删除腿”'来自新添加的元素。然后,您应该看到弹出窗口以确认或取消删除。
$('.missionlegswrapper').on('click', '.removeleg', function(e){
e.preventDefault();
var elem = $(this);
// Notice Message
$noticeMessage =
'<div>' +
'<div>Are you sure you want to remove this leg? All the information you\'ve entered will be lost.</div>' +
'<div>' +
'<a href="javascript:void(0);" class="button confirm green" onClick="removeAndClose(elem);">Confirm</a>' +
'<a href="javascript:void(0);" class="button cancel red" onClick="closePopup();">Cancel</a>' +
'</div>' +
'<div class="clear"></div>' +
'</div>';
// Notice Popup
noticePopup('error',$noticeMessage);
//removeAndClose(elem);
});
/**
* Notice Popup Function
* messageType: The message to be entered into the popup
* message: error, notice, warning (services as class name identifier)
*/
function noticePopup(messagetype,message){
// Append Backdrop to Body
$('body').append('<div class="noticepopupbackdrop"></div>');
// Append Popup to Body
$('body').append(
'<div class="noticepopup ' + messagetype + '">' +
'<div class="noticepopup_outer">' +
'<div class="noticepopup_inner">' +
'<div class="noticepopup_header">' +
'<span>Attention</span>' +
'<div class="noticeclosebttn"></div>' +
'</div>' +
'<div class="noticepopup_content">' +
'<div class="noticepopupcontent_inner">' +
message +
'<div class="clear"></div>' +
'</div>' +
'<div class="clear"></div>' +
'</div>' +
'<div class="clear"></div>' +
'</div>' +
'<div class="clear"></div>' +
'</div>' +
'<div class="clear"></div>' +
'</div>'
);
// Initial Open
$('div.noticepopupbackdrop').fadeIn(150);
$('div.noticepopup').css({display: 'block'}).animate({top: '50%', opacity: '1.00'}, 300);
// Grab Width and Height and Center Popup on Page Load
popupWidthHeight();
// On Resize
$(window).on('resize', function(){
// Grab Width and Height and Center Popup on Resize
popupWidthHeight();
});
// On Click Close
$('div.noticepopupbackdrop,div.noticeclosebttn').on('click', function(){
closePopup();
});
}
/**
* Close Popup Function
*/
function closePopup(){
$('div.noticepopup').fadeOut(150);
$('div.noticepopupbackdrop').fadeOut(175);
setTimeout(function(){
$('div.noticepopupbackdrop,div.noticepopup').remove();
}, 350);
}
/**
* Get Notice Popup Width and Height Function
*/
function popupWidthHeight(){
var noticeWidth = $('div.noticepopup').width();
var noticeHeight = $('div.noticepopup').height();
$('div.noticepopup').css({marginTop: -(noticeHeight / 2), marginLeft: -(noticeWidth / 2) });
}
/**
* Close Popup Notice and Remove Mission Leg
*/
function removeAndClose(thisObj){
thisObj.closest('.missionlegitem').remove();
console.log(thisObj);
// Close Popup
var popupCloseTime = setTimeout(function(){
closePopup();
},25);
}
答案 0 :(得分:1)
下面的代码可以做得更漂亮和抽象,但实质上你可以将HTML设计与功能行为分开,类似于下面的内容。
我只是稍微将HTML与功能代码分开,但是为了更好的可重用性,我可以自由地进一步发展。
您的任务Leg Wrapper点击事件代码可能会更改为:
// Data Entry Form Remove Leg
$('.missionlegswrapper').on('click', '.removeleg', function(e){
e.preventDefault();
var elem = $(this);
// Notice Message
// Removed in-line click events
// Added identifiers through use of data-id to each link
$noticeMessage =
'<div>' +
'<div>Are you sure you want to remove this leg? All the information you\'ve entered will be lost.</div>' +
'<div>' +
'<a data-id="notice-message-confirm" href="javascript:void(0);" class="button confirm green">Confirm</a>' +
'<a data-id="notice-message-cancel" href="javascript:void(0);" class="button cancel red">Cancel</a>' +
'</div>' +
'<div class="clear"></div>' +
'</div>';
// Add click event handlers in JavaScript instead
// Assigning the "this" context through the use of "bind"
$(document).on('click', '[data-id="notice-message-confirm"]', removeAndClose.bind(this));
$(document).on('click', '[data-id="notice-message-cancel"]', closePopup);
// Notice Popup
noticePopup('error',$noticeMessage);
//removeAndClose(elem);
});
由于removeAndClose()
bind(this)
方法现在位于所点击的链接的上下文中
/**
* Close Popup Notice and Remove Mission Leg
*/
function removeAndClose(){
console.log(this);
$(this).closest('.missionlegitem').remove();
// Close Popup
var popupCloseTime = setTimeout(function(){
closePopup();
},25);
}
参见工作示例here
上面的代码仍然是&#34;凌乱&#34;并且你可以将每个通知包装在它自己的对象中,并且每个通知都管理它自己的事件处理等。