我想在两个输入元素之间添加一个前置元素。我可以用额外的 css 解决它,但这不是我想要的。
是否有仅使用bootstrap而没有额外 css代码的解决方案?
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<div class="input-group input-group-sm m-4 w-50">
<input class="form-control" type="text">
<div class="input-group-prepend">
<div class="input-group-text">@</div>
</div>
<input class="form-control"></input>
</div>Run Code Online (Sandbox Code Playgroud)
我想为引导程序使用颜色选择器插件:https : //farbelous.io/bootstrap-colorpicker/index.html
它使用Bootstrap 4和Jquery
在尝试由开发人员在我的网站或JS Fiddle中发布的非常基本的代码示例时,颜色选择器无法正常工作(您应该在左侧看到一个可单击的正方形,并可以使用它来选择颜色)
我究竟做错了什么 ?我以为可能是导入无效,所以我使用了CDN,但它没有任何改变
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet">
<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-colorpicker/2.5.3/css/bootstrap-colorpicker.css" rel="stylesheet">
</head>
<body>
<div class="jumbotron">
<h1>Bootstrap Colorpicker Demo</h1>
<input id="demo" type="text" class="form-control" value="rgb(255, 128, 0)" />
</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js'></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.bundle.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-colorpicker/2.5.3/js/bootstrap-colorpicker.js"></script>
<script>
$(function () {
// Basic instantiation:
$('#demo').colorpicker();
// Example using an event, to change the color of the .jumbotron background:
$('#demo').on('colorpickerChange', function(event) {
$('.jumbotron').css('background-color', event.color.toString());
});
});
</script>
</body>
Run Code Online (Sandbox Code Playgroud) 我正在尝试执行代码,以使特定的无限数学条件成立.条件为真,使得值= 90 + 360X.其中X是整数.所以我正在使用单位圆,只想要等于正Y轴的度数.这是一张高亮橙色轴的图片.
例如,角度90,450,810等将使条件成立.我已尝试在代码中使用%,如您所见:
else if (DegreeValue == 90 || ManyRotations90(DegreeValue, 90) == true)
{
Console.WriteLine("Angle(" + DegreeValue + ") lies between the 1st and 2nd quadrant. In other words, it doesn't belong to a specfic section.");
}
static public bool ManyRotations90(double num01, double num02)
{
if (num01 % num02 == 0);
{
return true;
}
return false;
}
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即使条件对于这些数字也会返回,但对于我不想要的数字也是如此.//这很好540%90 == 0.但是270%90 == 0 //这很糟糕.有没有这样的方式,它只适用于90 + 360X?
早上好,我在更新 Firebase/Analytics 和 Firebase/Core pod 时遇到问题。
我的播客文件:
source 'https://github.com/CocoaPods/Specs.git'
source 'https://github.com/CocoaPods/Specs'
platform :ios, '10.0'
target 'Unity-iPhone' do
pod 'Firebase/Analytics', '5.15.0'
pod 'Firebase/Core', '5.15.0'
pod 'Firebase/Messaging', '5.1.0'
pod 'GoogleAppMeasurement', '5.3.0'
pod 'Google-Mobile-Ads-SDK', '~> 7.0'
end
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如果我运行,pod install我会得到以下输出
Analyzing dependencies
[!] CocoaPods could not find compatible versions for pod "Firebase/Analytics":
In Podfile:
Firebase/Analytics (= 5.15.0)
None of your spec sources contain a spec satisfying the dependency: `Firebase/Analytics (= 5.15.0)`.
You have either:
* out-of-date source repos which you can update …Run Code Online (Sandbox Code Playgroud) 以下是 Vaadin 按钮的代码:
String textToCopy = "COPY ME!!!";
Button copyBtn = new Button("");
copyBtn.setButtonLayout(false, new IconSelf(VaadinIcon.COPY_O), "Copy"));
copyBtn.addClickListener(event -> {
getUI().get().getPage().executeJs("navigator.clipboard.writeText(`" + textToCopy + "`);");
Notification.show(getTranslation(PAGESTRING + "attributestoclipboard"))
});
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为了复制我使用的自定义文本navigator.clipboard.writeText(...)。
适用于Chrome和Edge,但不适用于Firefox。当我在该功能中使用它时,
Firefox 也被阻止了。document.execCommand("copy")executeJS(...)
onClick我想我需要向按钮添加一个功能。我怎样才能用 Vaadin 做到这一点?
我想要一个响应式棋盘格背景,它应该看起来像颜色选择器中的背景:
我试过的:
.chess {
background-image:
linear-gradient(90deg, #999 30px, white 30px),
linear-gradient(90deg, white 30px, #999 30px),
linear-gradient(90deg, #999 30px, white 30px),
linear-gradient(90deg, white 30px, #999 30px),
linear-gradient(90deg, #999 30px, white 30px),
linear-gradient(90deg, white 30px, #999 30px),
linear-gradient(90deg, #999 30px, white 30px);
background-position: 0 0, 0 30px, 0 60px, 0 90px, 0 120px;
background-repeat: repeat-x;
background-size: 60px 30px;
height: 150px;
margin: 15px auto;
width: 30%;
}
.fas {
text-align: center;
font-size: 10em
}Run Code Online (Sandbox Code Playgroud)
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.7.2/css/all.min.css" rel="stylesheet" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous"> …Run Code Online (Sandbox Code Playgroud)css ×3
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