如何为javascript方法参数设置默认值
<div class="blog_content">你是否遇到过这样的情况，写了个function，无参数。<div class="dp-highlighter"><div class="bar"><div class="tools">Js代码 http://my249645546.iteye.com/images/icon_copy.gif http://my249645546.iteye.com/images/icon_star.pnghttp://my249645546.iteye.com/images/spinner.gif
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