


#浅谈浏览器兼容性问题-(4)工具及调试##前言浏览器兼容性的问题,即使积累得更多,也会有新的问题出现。此时我们就需要会(利用工具)调试及解决问题。下面以一个滚动条宽度位置的问题为例说明此点。##问题这个网址下的表格,在IE7模式下,会有一部分的内容被滚动条覆盖了##解决我们要利用`开发人员工具`,**一层层循序寻找看是哪个元素导致的问题**,是里面的太大,还是外面的太小?其实图中我已经找好了,是里面的表格元素大了一点,而且是IE7下面才有的问题,所以,迅速地在css中加上`+table_list{width:98%;}`,问题解决了。http://gh.p2227.com/demo/applyLayout/playout.html##思考width:100%的意义是什么呢,跟width:auto又有什么区别?我找到了[这篇博客](http://blog.csdn.net/wgw335363240/article/details/7043861),里面讨论到了margin的问题,但我的代码中并没有margin,所以我自己做了测试。针对width:100%和width:auto的区别[width:100%的测试代码](http://gh.p2227.com/demo/BrowserCompatibility/debug/scrollBar.html) [width:auto的测试代码](http://gh.p2227.com/demo/BrowserCompatibility/debug/scrollBar-auto.html)效果图:
小结一下,IE6宽度100%,滚动条不见了,但中键能滚动,目测是滚动条生成在table的外面;IE7宽度100%,滚动条与table重叠,table的部分内容看不见;IE8宽度auto,宽度是以内容去适应的,并不是parent对象的宽度用表格来整理如下| |宽度100%|宽度auto||--|--|--||IE6|滚动条附加在scroll元素以外|宽度适合,内容显示完整||IE7|滚动条叠加在scroll元素内,内部元素宽度没有把滚动条排除|宽度适合,内容显示完整||IE8|宽度适合,内容显示完整|宽度以内容为准,并不会适应parent元素|注:IE9以上在一点上的表现与IE8基本相同##更好的解决方案综上,我们针对IE67用`宽度auto`,其他情况用`宽度100%`是更好的解决方案[代码](http://gh.p2227.com/demo/BrowserCompatibility/debug/scrollBar-hack.html)我们面对兼容性问题,一方面可以根据一些基本的原理及以往经验去修改,另外一方面是分析调试、罗列测试与新积累。如此**发现-解决-思考-整理**从而得出更好的解决方法。##参考http://blog.csdn.net/wgw335363240/article/details/7043861http://www.cnblogs.com/aaronjs/p/3565253.html

The official account web page update cache, this thing is simple and simple, and it is complicated enough to drink a pot of it. You worked hard to update the official account article, but the user still opened the old version. Who can bear the taste? In this article, let’s take a look at the twists and turns behind this and how to solve this problem gracefully. After reading it, you can easily deal with various caching problems, allowing your users to always experience the freshest content. Let’s talk about the basics first. To put it bluntly, in order to improve access speed, the browser or server stores some static resources (such as pictures, CSS, JS) or page content. Next time you access it, you can directly retrieve it from the cache without having to download it again, and it is naturally fast. But this thing is also a double-edged sword. The new version is online,

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