jquery延迟加载插件不适用于datalist asp.net

我正在使用datalist，datalits将在页面中显示许多图像。所以我使用jQueryLazyLoad插件，但它不起作用，而是抛出了我不理解的错误

这是我的密码 这是绑定datalist后的示例html输出

<span id="dgImages"><span>
       <img alt="IIS 7 settings" title="" src="images/snapdeals/06531A_PINK_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06532A_pink_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06633A_BLUE_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06641A_CHERRY_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06641A_pink_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06641A_WHITE_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/08334A_BLACK_M_1_2x.jpg" src="" /> 

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我只是不明白如何添加一个空的src标记。 我的代码中有什么错误？

其中说真实图像url应该存储在原始属性的数据中。并且src用作占位符图像。是网站上说的用法

<span id="dgImages"><span>
       <img alt="IIS 7 settings" title="" src="images/snapdeals/06531A_PINK_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06532A_pink_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06633A_BLUE_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06641A_CHERRY_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/06641A_pink_M_1_2x.jpg" src="" /> 

    </span><span>
       <img alt="IIS 7 settings" title="" src="images/snapdeals/06641A_WHITE_M_1_2x.jpg" src="" /> 

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       <img alt="IIS 7 settings" title="" src="images/snapdeals/08334A_BLACK_M_1_2x.jpg" src="" /> 

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