Hoe OM - Binnekort Bladsy
Leer hoe om 'n "binnekort-bladsy" met CSS en JavaScript te skep.
Hoe om 'n komende bladsy te skep
Stap 1) Voeg HTML by:
In ons voorbeeld sal ons 'n agtergrondprent gebruik wat die hele bladsy dek en 'n bietjie teks in die prent plaas om die gebruiker te laat weet wat aangaan.
Hierdie voorbeeld wys hoe om 'n "Coming Soon Page" te skep met net HTML en CSS. Kyk na die volgende voorbeeld om uit te vind hoe om 'n "afteltimer" ook met JavaScript by te voeg.
Voorbeeld
<div class="bgimg">
<div class="topleft">
<p>Logo</p>
</div>
<div class="middle">
<h1>COMING SOON</h1>
<hr>
<p>35
days</p>
</div>
<div class="bottomleft">
<p>Some text</p>
</div>
</div>
Stap 2) Voeg CSS by:
Voorbeeld
/* Set height to 100% for body and html to enable the background image to
cover the whole page: */
body, html {
height: 100%
}
.bgimg {
/* Background image */
background-image: url('/w3images/forestbridge.jpg');
/*
Full-screen */
height: 100%;
/* Center the background image */
background-position: center;
/* Scale and zoom in the image */
background-size: cover;
/* Add position: relative to
enable absolutely positioned elements inside the image (place text) */
position: relative;
/* Add a white text color to all elements inside the .bgimg container */
color: white;
/* Add a font */
font-family: "Courier New", Courier,
monospace;
/* Set the font-size to 25 pixels */
font-size: 25px;
}
/* Position text
in the top-left corner */
.topleft {
position: absolute;
top: 0;
left:
16px;
}
/* Position text in the bottom-left corner */
.bottomleft {
position: absolute;
bottom: 0;
left: 16px;
}
/* Position text in the middle */
.middle {
position: absolute;
top: 50%;
left: 50%;
transform:
translate(-50%, -50%);
text-align: center;
}
/* Style the <hr> element */
hr {
margin: auto;
width: 40%;
}
Stap 3) Voeg JavaScript by
Voeg JavaScript by om 'n afteller te skep:
Voorbeeld
// Set the date we're counting down to
var countDownDate = new Date("Jan 5, 2022 15:37:25").getTime();
//
Update the count down every 1 second
var x = setInterval(function() {
// Get todays date and time
var now = new Date().getTime();
// Find the distance between now an the count down date
var distance = countDownDate - now;
// Time calculations for
days, hours, minutes and seconds
var days = Math.floor(distance /
(1000 * 60 * 60 * 24));
var hours = Math.floor((distance % (1000 *
60 * 60 * 24)) / (1000 * 60 * 60));
var minutes = Math.floor((distance
% (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((distance
% (1000 * 60)) / 1000);
// Display the result in an element with
id="demo"
document.getElementById("demo").innerHTML = days + "d " +
hours + "h "
+ minutes + "m " + seconds + "s ";
// If
the count down is finished, write some text
if (distance < 0) {
clearInterval(x);
document.getElementById("demo").innerHTML
= "EXPIRED";
}
}, 1000);