小编Man*_*zzo的帖子

我在网上搜索,但没有找到任何东西.我正在尝试使用javascript更新文本框的占位符颜色,但我该怎么做？我有一个颜色选择器,颜色正在改变.

如果我在CSS中有这样的东西,我该如何更新它？

::placeholder {
  color: red;
}

<input placeholder="placeholder" />

是否有javascript命令来编辑它？就像是

document.getElementById('text').style.placeholderColor = newColor;

我正在使用LibGDX和RoboVM制作应用程序,而且我遇到了谷歌移动广告框架的问题.我到处搜索,但没有解决我的错误.

如果我在robovm.xml中声明这个框架就像这样

  <frameworkPaths>
    <path>libs</path>
  </frameworkPaths>
  <frameworks>
    <framework>UIKit</framework>
    <framework>OpenGLES</framework>
    <framework>QuartzCore</framework>
    <framework>CoreGraphics</framework>
    <framework>OpenAL</framework>
    <framework>AudioToolbox</framework>
    <framework>AVFoundation</framework>
    <framework>GoogleMobileAds</framework>
  </frameworks>

当我要创建IPA时,它会给我这个错误.

我怎么解决这个？

[ERROR] Undefined symbols for architecture armv7:
[ERROR]   "_OBJC_CLASS_$_GLKView", referenced from:
[ERROR]       objc-class-ref in GoogleMobileAds(flat-armv7)
[ERROR]   "_kCVPixelBufferPixelFormatTypeKey", referenced from:
[ERROR]       l5704 in GoogleMobileAds(flat-armv7)
[ERROR]      (maybe you meant: _str_kCVPixelBufferPixelFormatTypeKey_00)
[ERROR]   "_kCVImageBufferYCbCrMatrix_ITU_R_601_4", referenced from:
[ERROR]       l4155 in GoogleMobileAds(flat-armv7)
[ERROR]   "_GLKMatrix4Identity", referenced from:
[ERROR]       l4149 in GoogleMobileAds(flat-armv7)
[ERROR]       l4160 in GoogleMobileAds(flat-armv7)
[ERROR]      (maybe you meant: _str_GLKMatrix4Identity_00)
[ERROR]   "_CVOpenGLESTextureGetTarget", referenced from:
[ERROR]       l4158 in GoogleMobileAds(flat-armv7)
[ERROR] …