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Javascript Backbone.js移动滑块-通过视图函数传递变量_Javascript_Jquery_Backbone.js_Mobile Website - Fatal编程技术网

Javascript Backbone.js移动滑块-通过视图函数传递变量

Javascript Backbone.js移动滑块-通过视图函数传递变量,javascript,jquery,backbone.js,mobile-website,Javascript,Jquery,Backbone.js,Mobile Website,我将按照本教程构建移动滑块: 唯一的区别是,我正试图把它整合到主干中。然而,我遇到了一个可变的问题。有谁能提供一些建议,如何让这个工作。在视图的函数中传递这些变量是一个问题: var sliding = startClientX = startPixelOffset = pixelOffset = currentSlide = 0, slideCount = $('.slide').length; 完整主干视图: WhiteDeals.Views.EditorView = Backbone.V

我将按照本教程构建移动滑块:

唯一的区别是,我正试图把它整合到主干中。然而,我遇到了一个可变的问题。有谁能提供一些建议,如何让这个工作。在视图的函数中传递这些变量是一个问题:

var sliding = startClientX = startPixelOffset = pixelOffset = currentSlide = 0,
slideCount = $('.slide').length;
完整主干视图:

WhiteDeals.Views.EditorView = Backbone.View.extend({

initialize: function() {
    _.bindAll(this, 'render', 'slideStart', 'slide');

    var sliding = startClientX = startPixelOffset = pixelOffset = currentSlide = 0,
    slideCount = $('#dealSlide').length;

},

events: {
    "touchstart"             : "slideStart",
    "mousedown"              : "slideStart",
    "mouseup"                : "slideEnd",
    "touchend"               : "slideEnd",
    "mousemove"              : "slide",
    "touchmove"              : "slide"
},

slideStart: function(event) {
    if (event.originalEvent.touches)
      event = event.originalEvent.touches[0];
    if (sliding == 0) {
      sliding = 1;
      startClientX = event.clientX;
    }
}, // End slideStart

slide: function(event) {
    event.preventDefault();
    if (event.originalEvent.touches)
        event = event.originalEvent.touches[0];
        var deltaSlide = event.clientX - startClientX;

    if (sliding == 1 && deltaSlide != 0) {
      sliding = 2;
      startPixelOffset = pixelOffset;
    }

    if (sliding == 2) {
      var touchPixelRatio = 1;
      if ((currentSlide == 0 && event.clientX > startClientX) ||
          (currentSlide == slideCount - 1 && event.clientX < startClientX))
        touchPixelRatio = 3;
      pixelOffset = startPixelOffset + deltaSlide / touchPixelRatio;
      $('#dealSlider').css('transform', 'translate3d(' + pixelOffset + 'px,0,0)').removeClass();
    }
},

slideEnd: function(event) {
    if (sliding == 2) {
        sliding = 0;
        currentSlide = pixelOffset < startPixelOffset ? currentSlide + 1 : currentSlide - 1;
        currentSlide = Math.min(Math.max(currentSlide, 0), slideCount - 1);
        pixelOffset = currentSlide * -$('body').width();
        $('#temp').remove();
        $('<style id="temp">#dealSlider.animate{transform:translate3d(' + pixelOffset + 'px,0,0)}</style>').appendTo('head');
        $('#dealSlider').addClass('animate').css('transform', '');
    }
}, // End slideEnd

render: function() {
    this.$el.html(JST['editor/view']());
    return this;
}

}); // End of Views EditorView
WhiteDeals.Views.EditorView=Backbone.View.extend({
初始化:函数(){
_.bindAll(这是“渲染”、“幻灯片开始”、“幻灯片”);
var Slide=startClientX=startPixelOffset=pixelOffset=currentSlide=0,
slideCount=$('#dealSlide')。长度;
},
活动:{
“touchstart”:“slideStart”,
“mousedown”:“slideStart”,
“鼠标”:“幻灯片”,
“触摸端”:“幻灯片”,
“鼠标移动”:“幻灯片”,
“触摸移动”:“滑动”
},
slideStart:函数(事件){
if(event.originalEvent.touchs)
event=event.originalEvent.touch[0];
如果(滑动==0){
滑动=1;
startClientX=event.clientX;
}
},//结束滑动开始
幻灯片:功能(事件){
event.preventDefault();
if(event.originalEvent.touchs)
event=event.originalEvent.touch[0];
var deltaSlide=event.clientX-startClientX;
如果(滑动==1&&deltaSlide!=0){
滑动=2;
startPixelOffset=像素偏移;
}
如果(滑动==2){
var-touchPixelRatio=1;
if((当前幻灯片==0&&event.clientX>startClientX)||
(currentSlide==slideCount-1&&event.clientX
我会将这些变量打包到模型中,如:

var CoordsModel = Backbone.Model.extend({})
var coord = new CoordsModel();
然后将其传递到
WhiteDeals
视图:

var view = new WhiteDeals({model: coord});
然后访问所有函数,通过模型的getter/setter,我可以访问其变量,例如:

initialize: function() {
    _.bindAll(this, 'render', 'slideStart', 'slide');

    // var sliding = startClientX = startPixelOffset = pixelOffset = currentSlide = 0

    this.model.set('sliding', 0);
    this.model.set('startClientX', 0);
    ...
    this.model.set('currentSlide', 0);

    slideCount = $('#dealSlide').length;

},
...
slideStart: function(event) {
    if (event.originalEvent.touches)
        event = event.originalEvent.touches[0];
    if (sliding == 0) {
        // sliding = 1;
        // startClientX = event.clientX;
        this.model.set('sliding', 1);
        this.model.set('startClientX', event.clientX);
    }
}, // End slideStart

一种可能的解决方案可能是将touchstart事件和功能保留在eventdelegator中。然后在touchstart的功能以及所有子功能中添加touchmove和touchstop的事件侦听器。仅供参考–对于希望在主干中添加出色的移动触摸滑块的人,我最终选择了Swipe.js。它很容易安装,性能也很好。