我正在尝试设置< ul>的高度,宽度和背景图像.元件.
这是我为Backbone.View获得的内容:
- var RackView = Backbone.View.extend({
- tagName: 'ul',className: 'rack unselectable',template: _.template($('#RackTemplate').html()),render: function () {
- this.$el.html(this.template(this.model.toJSON()));
- return this;
- },attributes: function () {
- var isFront = this.model.get('isFront');
- var imageUrlIndex = isFront ? 0 : 1;
- return {
- 'background-image': 'url(' + this.model.get('imageUrls')[imageUrlIndex] + ')','height': this.model.get('rows') + 'px','width': this.model.get('width') + 'px'
- };
- }
- }
这不起作用,因为属性不会写入元素的“style”属性.相反,它们被视为属性…因为函数名称而有意义,但它让我想知道 – 我如何正确地实现这样的事情?
设置后图像,高度和宽度是不可变的,如果这有助于简化…
我只是以一种风格包裹我的回报吗?这似乎过于复杂……
这是生成的HTML:
- <ul background-image="url(data:image/png;base64,...)" height="840px" width="240px" class="rack unselectable">
- </ul>
编辑:这有效,但我没有激怒:
- attributes: function () {
- var isFront = this.model.get('isFront');
- var imageUrlIndex = isFront ? 0 : 1;
- var backgroundImageStyleProperty = "background-image: url(" + this.model.get('imageUrls')[imageUrlIndex] + ");";
- var heightStyleProperty = "height: " + this.model.get('rows') + 'px;';
- var widthStyleProperty = "width: " + this.model.get('width') + 'px;';
- return {
- 'style': backgroundImageStyleProperty + ' ' + heightStyleProperty + ' ' + widthStyleProperty
- };
- },
解决方法
您可以在渲染函数中使用jquery css函数:
- render: function () {
- this.$el.html(this.template(this.model.toJSON()));
- var backgroundImageStyleProperty = "background-image: url(" + this.model.get('imageUrls')[imageUrlIndex] + ");";
- var heightStyleProperty = "height: " + this.model.get('rows') + 'px;';
- var widthStyleProperty = "width: " + this.model.get('width') + 'px;';
- this.$el.css({
- 'height' : heightStyleProperty,'width' : widthStyleProperty,'background-image': backgroundImageStyleProperty
- });
- return this;
- },