我一直在挣扎几个小时，我需要了解为什么我的网站（使用Drupal 7.50）没有在Internet Explorer 11上显示任何占位符？
我已经尝试了很多我见过的东西，就像这些：
语法错误，无法识别的表达式：'[placeholder]'
- mathiasbynens这个github项目，
我也尝试从其他stackoverflow帖子定制Javascript，但这些占位符仍未显示。
我也试着改变CSS，但没有成功：
： - ms-输入占位符{ / * IE10-11 * / 颜色：#ccc！important; font-weight：400！important; } :: - ms-input-placeholder {/ * Edge * / color：#ccc; font-weight：400; } :: placeholder {/ * CSS工作草案* / 颜色：#ccc; font-weight：400; }我真的迷失了，一直在挣扎，解决这个问题？
编辑
这是一个例子我使用的输入：
< input required =requiredplaceholder =Votreâge（例如：28） class =form-control form-text requiredid =edit-submitted-agename =submitted [age]value =size =60maxlength =128autocomplete =offtype = 文本 >
更新
我可能找到了一种方法，但我不确定，当我将站点兼容模式从9（默认值）更改为10或11时，我发现它正在工作。因此，如果有方法设置兼容性模式当访问网站，然后解决。
解决方案终于找到了解决这个问题的方法，仿真默认设置为9在调试器的屏幕上，即使Internet Explorer 11正在使用，所以我将它添加到HTML的头标记中。
< ; meta http-equiv =X-UA-Compatiblecontent =IE = 11>将兼容格式更改为IE11。
I've been struggling for some hours now and I need to understand, why my website (using Drupal 7.50) isn't showing any placeholder on Internet Explorer 11?
I've already tried lots of things I've seen, just as these :
- This website (hagenburger) where I got this error
Syntax error, unrecognized expression: '[placeholder]'
- This github project by mathiasbynens which didn't help.
I also tried custom Javascript from other stackoverflow posts but those placeholder are still not shown.
I also tried to change the CSS just as this but without success :
:-ms-input-placeholder { /* IE10–11 */ color: #ccc !important; font-weight: 400 !important; } ::-ms-input-placeholder { /* Edge */ color: #ccc; font-weight: 400; } ::placeholder { /* CSS Working Draft */ color: #ccc; font-weight: 400; }I'm really lost and been struggling for a while, any suggestions on how to resolve this issue ?
EDIT
Here's an exemple of an input I'm using:
<input required="required" placeholder="Votre âge (ex:28)" class="form-control form-text required" id="edit-submitted-age" name="submitted[age]" value="" size="60" maxlength="128" autocomplete="off" type="text">
UPDATE
I might found a way but I'm not sure, I saw that it's working when I change the site compatibility mode from 9 (default) to 10 or 11. So if there is a way to set a compatibility mode when accessing the website then it's resolved.
解决方案Finally found how to resolve this issue, the emulation was set at 9 as default on the debugger's screen even if internet explorer 11 was being used, so I added this on the head tag of the HTML.
<meta http-equiv="X-UA-Compatible" content="IE=11">Which changes the compatability format to IE11.
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