<body> <div id="div1"> <img /><!--为了书写规范,我回车这行代码,最后运行不了,如果不回车直接跟<div id="div1">就可以正常运行--> </div> </body>
数据分析师2017-10-01 00:31:55
Teacher, if you write down your code silently, it won’t run all the time. It’s not easy to find bugs. Why can't I press Enter - PHP Chinese website Q&A - Teacher, if you write down your code silently, it won't run all the time. It's not easy to find bugs. Why can't I press Enter - PHP Chinese website Q&A
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阿神2017-02-25 17:40:50
是代码里面node_body.firstChild影响的
用了回车的话,获取的是div元素下的第一个子节点,这时候这个子节点是一个文本节点,可以看下这篇文章javascript中的firstchild,调试的话,可以尝试像截图12行那样,输出查看下两次获取的imgObj对象有什么区别就能稍微看清楚点了