Front End Technology Articles - Page 406 of 652

The HTML novalidate attribute define that while submitting the form the form data should not be validated in an HTML document.SyntaxFollowing is the syntax −Let us see an example of HTML novalidate Attribute −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;    }    input[type='text'] {       width: 300px;       padding: 8px 16px;       border: 2px solid #fff;       background: transparent;       border-radius: 20px;     ... Read More

The HTML window btoa() method encodes a string of data in base-64 string which can be decoded by atob() method in the HTML document.SyntaxFollowing is the syntax −window.btoa(string_to_be_encoded);Let us see an example of HTML window btoa() method −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;    }    .btn {       background: #db133a;       border: none;       height: 2rem;       border-radius: 2px;       width: 40%;   ... Read More

The HTML window alert() method shows an alert box with the defined message and an OK button in an HTML document.SyntaxFollowing is the syntax −alert(“message”);Let us see an example of HTML window alert() method −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;       padding: 20px;    }    .btn {       background: #db133a;       border: none;       height: 2rem;       border-radius: 2px;       ... Read More

The HTML onkeypress event attribute is triggered when the user presses a key on the keyboard.SyntaxFollowing is the syntax −ContentLet us see an example of HTML onkeypress event Attribute −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;       padding: 20px;    }    .show {       font-size: 1.2rem;    } HTML onkeypress Event Attribute Demo    function keyFn() {       document.querySelector(".show").innerHTML = 'You enter: ' + document.querySelector("textarea").value;    } OutputEnter your message in white text area to observe how onkeypress event attribute works.

The HTML onkeyup event attribute is triggered when the user releases a key on the keyboard.SyntaxFollowing is the syntax −ContentLet us see an example of HTML onkeyup event Attribute −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;       padding: 20px;    }    .show {       font-size: 1.2rem;    } HTML onkeyup Event Attribute Demo    function keyFn() {       document.querySelector(".show").innerHTML = 'You enter: ' + document.querySelector("textarea").value;    } OutputEnter your message in white text area to observe how onkeyup event attribute works.

The HTML onkeydown event attribute is triggered when the user is pressing a key on the keyboard.SyntaxFollowing is the syntax −ContentLet us see an example of HTML onkeydown event Attribute −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;       padding: 20px;    }    .show {       font-size: 1.2rem;    } HTML onkeydown Event Attribute Demo    function keyFn() {       document.querySelector(".show").innerHTML = 'You enter: ' + document.querySelector("textarea").value;    } OutputEnter your message in white text area to observe how onkeydown event attribute works.

The HTML onerror event attribute is triggered when an error occurs while loading an external file in an HTML document.SyntaxFollowing is the syntax −ContentLet us see an example of HTML onerror event Attribute −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;       padding: 20px;    }    .btn {       background: #db133a;       border: none;       height: 2rem;       border-radius: 2px;       width: ... Read More

The HTML onwheel event attribute is triggered when the user moves the wheel of the mouse on an HTML element in an HTML document.SyntaxFollowing is the syntax −ContentLet us see an example of HTML onwheel event Attribute −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;       padding: 20px;    }    .wheel {       border: 2px solid #fff;       padding: 10px;    } HTML onwheel Event ... Read More

The HTML ontoggle event attribute is triggered when a user opens or closes the HTML element in an HTML document.SyntaxFollowing is the syntax −ContentLet us see an example of HTML ontoggle event Attribute −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;       padding: 20px;    } HTML ontoggle Event Attribute Demo Hi! I'm summary element This is a paragraph with some dummy content.    function toggleFn() ... Read More

The HTML onselect event attribute is triggered when a user selects some text of an HTML element in an HTML document.SyntaxFollowing is the syntax −Let us see an example of HTML onselect event Attribute −Example Live Demo    body {       color: #000;       height: 100vh;       background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;       text-align: center;       padding: 20px;    }    textarea {       border: 2px solid #fff;       background: transparent;       padding: 10px;    }    ::placeholder {   ... Read More