我正在使用 Backbone 并具有以下视图：
class GT.RunManager.Views.ViolationMarker extends Backbone.View
className: 'violation-marker'
template: JST['app/templates/violation_marker']
initialize: (@options) ->
@x = @options.x
@y = @options.y
@location = @options.location
@render()
render: =>
@$el.html @template()
@$el.data 'location', @location
@$el.css
'top': @y
'left': @x
this
从以下位置调用：
class GT.RunManager.Views.FloorplanView extends Backbone.View
className: 'floorplan-view'
events:
'click .violation-marker' : 'edit_location'
'click' : 'create_location'
initialize: (@options) ->
@run = @options.run
@student = @options.student
@floorplan = @options.run.get('floorplan')
@locations = new GT.RunManager.Collections.Locations()
@locations.run = @options.run
@locations.on 'add', @set_marker
@locations.on 'reset', @load_markers
@run.on 'remove_location', (location) =>
location.destroy() if location
@load_markers()
@locations.fetch data: { student_id: @student.id }
@render()
render: =>
if @floorplan
@$el.css 'background-image', "url(data:image/png;base64,#{@floorplan.url})"
this
create_location: (e) =>
@locations.create x: e.offsetX - 10, y: e.offsetY - 10, student_id: @student.id, run_id: @run.id
load_markers: =>
@$el.find('i').remove()
@locations.each (location) => @set_marker(location, false)
set_marker: (location, prompt = true) =>
marker = new GT.RunManager.Views.ViolationMarker(location: location, x: location.get('x'), y: location.get('y'))
@$el.append marker.el
if prompt
@run.trigger 'violations:set', location
这个想法是在用户触摸它的屏幕上放置一个图标（在 iPad 上，用于 exp）。它在 Chrome 和 Safari 中效果很好，但在 Firefox 中却不行，它的图标被放置在父 div 的左上角。
有任何想法吗？
编辑：这个主干视图的样式使用以下 css：
div.violation-marker {
position: absolute;
background-color: red;
@include border-radius(6px);
padding: 4px;}
模板只是（引导程序）：
<i class="icon icon-fire icon-white"></i>
父 div 的样式为：
.floorplan-view {
position: relative;
float: left;
margin-left: 100px;
width: 755px;
height: 755px; }