To change the background color of a button, use the background-color property.You can try to run the following code to change button’s background colorExampleLive Demo                    .btn {             background-color: yellow;             color: black;             text-align: center;             font-size: 13px;          }                     Result       Click below for result:       Result    

To display a shadow on image hover, use the CSS box-shadow propertyExampleLive Demo                    img {             border: 2px solid orange;             border-radius: 3px;             padding: 7px;          }          img:hover {             box-shadow: 0 0 2px 2px blue;          }                        

Apply a 2D or 3D transformation to an element with the transform property in CSS. You can try to run the following code to rotate an element using transformationExampleLive Demo                    div {             width: 200px;             height: 100px;             background-color: gray;             transform: rotate(10deg);          }                     Rotation      Demo    

To perform unit testing in JavaScript, use Unit.js. It is a cross-platform open-source unit testing framework.ExampleLet’s say the following in your test code −var example = ‘Welcome’; test.string(example) .isEqualTo(‘Welcome’);The function demo() displays a suit of tests, whereas demo1() is an individual test specification, demo('Welcome’, function() {    demo1('Welcome to the ... Read More

To select all elements, use the * CSS Selector. You can try to run the following code to select all the elements,ExampleLive Demo                    *{             color: blue;             background-color: orange;          }                     Demo Website       Learning       Tutorials on web dev, programming, database, networking, etc.       Every tutorials has lessons with illustrations and figures.    

Use the animation-timing-function property, with the ease-out value to set animation with a slow end with CSSExampleLive Demo                    div {             width: 150px;             height: 200px;             position: relative;             background-color: #808000;             animation-name: myanim;             animation-duration: 2s;             animation-direction: alternate-reverse;             animation-iteration-count: 3;          }          @keyframes myanim {             from {left: 100px;}             to {left: 200px;}          }          #demo {animation-timing-function: ease-out;}                     ease-out effect    

Access the buf.buffer property directly to convert a binary NodeJS Buffer to JavaScript ArrayBuffer. The write through the original Buffer instance writes the ArrayBufferView.Keep in mind that the instances of Buffer are also instances of Uint8Array in node.js 4.x and higher versions.ExampleYou can try the following code snippet to convert a ... Read More

argc stands for argument count and argv stands for argument values. These are variables passed to the main function when it starts executing. When we run a program we can give arguments to that program like −$ ./a.out helloExampleHere hello is an argument to the executable. This can be accessed ... Read More

The C++ standard does not specify the size of integral types in bytes. It specifies the minimum range these types must be able to hold.The size in bits can be easily found from the specified minimum range.Not referring to the standard but the commonly used sizes for various platforms are ... Read More

Use the [attribute*=”value”] selector to select elements whose attribute value contains a specified value.You can try to run the following code to implement the CSS [attribute*="value"] selector,ExampleLive Demo                    [href* = java] {             border: 5px solid orange;             border-radius: 5px;          }                     PHP Tutorial       Java Tutorial