微信小程序开发问答《四十八》http请求的问题&textarea组件在fixed定位的模块中随页面 ...

具体的情况：

在模拟器中没问题，可是在真机下就出现以下问题, 在一个view盒子中，view盒子是固定定位，页面滑动时候，固定定位的盒子会定在屏幕的相对位置，但是盒子中的textarea组件会跟随页面滑动（组件固定在了相对页面的位置，而非屏幕的相对位置）。

解决：

官方文档中有提及–>如果 textarea 是在一个 position:fixed 的区域，需要显示指定属性 fixed 为 true。 链接：https://mp.weixin.qq.com/debug/wxadoc/dev/component/textarea.html

1 name</span>=<span class="hljs-string" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(230, 219, 116);">"textarea"</span> class=<span class="hljs-string" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(230, 219, 116);">"canael_textarea"</span> fixed=<span class="hljs-string" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(230, 219, 116);">"true"</span>/><br style="box-sizing: border-box; outline: none !important;"></code></pre></div><div id="wmd-preview-section-76" class="wmd-preview-section preview-content" style="font-family: 'Helvetica Neue', Arial, 'Hiragino Sans GB', STHeiti, 'Microsoft YaHei', 'WenQuanYi Micro Hei', SimSun, Song, sans-serif; font-size: 16px; box-sizing: border-box; line-height: 1.6; outline: none !important;"><h4 id="注意" style="box-sizing: border-box; font-family: inherit; line-height: 1.6; color: inherit; margin: 1.2em 0px 0.6em; font-size: 1.25em; outline: none !important;">注意：</h4><p style="box-sizing: border-box; outline: none !important; margin: 0px 0px 1.1em; line-height: 1.6;">属性的填写，fixed默认是 false的，但是如果有业务需要变动状态（某状态要false，某状态要true），则需要添加绑定，直接写false会默认转化为true。</p><p style="box-sizing: border-box; outline: none !important; margin: 0px 0px 1.1em; line-height: 1.6;">比如 ： fixed=”true” (结果为true)， fixed=”false”(结果也会是true)，所以需要绑定参数</p></div><div id="wmd-preview-section-77" class="wmd-preview-section preview-content" style="font-size: 16px; box-sizing: border-box; line-height: 1.6; outline: none !important;"><pre class="prettyprint hljs-dark" style="font-family: 'Source Code Pro', monospace; box-sizing: border-box; font-size: 0.9em; white-space: pre-wrap; padding: 0px; margin-top: 0px; margin-bottom: 1.1em; line-height: 1.6; word-break: break-all; word-wrap: break-word; color: rgb(51, 51, 51); border: 0px; border-image-source: initial; border-image-slice: initial; border-image-width: initial; border-image-outset: initial; border-image-repeat: initial; border-radius: 5px; outline: none !important; background-image: initial; background-attachment: initial; background-color: rgb(246, 246, 246); background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><code class="hljs basic" style="box-sizing: border-box; font-family: 'Source Code Pro', monospace; font-size: inherit; padding: 0.5em; color: rgb(248, 248, 242); border-radius: 0px; display: block; outline: none !important; background: rgb(35, 36, 31);"><br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">1 </span><textarea <span class="hljs-keyword" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">name</span>=<span class="hljs-string" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(230, 219, 116);">"textarea"</span> class=<span class="hljs-string" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(230, 219, 116);">"canael_textarea"</span> fixed=<span class="hljs-string" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(230, 219, 116);">"{{tag}}"</span>/><br style="box-sizing: border-box; outline: none !important;"><br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">2 </span><br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">3 </span>var app = getApp();<br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">4 </span>Page({<br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">5 </span><br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">6 </span>  <span class="hljs-keyword" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">data</span>:{<br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">7 </span>    tag:false<br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">8 </span>  }<br style="box-sizing: border-box; outline: none !important;"><span class="hljs-symbol" style="box-sizing: border-box; outline: none !important; line-height: 1.6; color: rgb(249, 38, 114);">9 </span>})<br style="box-sizing: border-box; outline: none !important;"></code></pre><p style="font-family: 'Helvetica Neue', Arial, 'Hiragino Sans GB', STHeiti, 'Microsoft YaHei', 'WenQuanYi Micro Hei', SimSun, Song, sans-serif; box-sizing: border-box; margin: 0px 0px 1.1em; line-height: 1.6; outline: none !important;">总结：这个bug的教训就是官方文档就是圣旨，要多看，看仔细，多么痛的领悟！！//(ㄒoㄒ)//</p><p style="font-family: 'Helvetica Neue', Arial, 'Hiragino Sans GB', STHeiti, 'Microsoft YaHei', 'WenQuanYi Micro Hei', SimSun, Song, sans-serif; box-sizing: border-box; margin: 0px 0px 1.1em; line-height: 1.6; outline: none !important;">　　　以上内容供学习总结分享，有什么不对的地方或可优化的地方，欢迎各位多多指教。</p><p style="box-sizing: border-box; margin: 0px 0px 1.1em; line-height: 1.6; outline: none !important;"><font face="宋体">作者：<font color="#ff6600"><span style="font-size: 12px; line-height: 14.4px; background-color: rgb(255, 255, 255);"><a href="http://www.cnblogs.com/miu-key/p/7145438.html">前愆訾</a></span></font></font></p></div></div>