Is there a way to uniformly add an alpha value to all the divs on my web page without specifying the exact color code in 'rgba'? I have divs with different background colors and I want to easily revert the changes if needed.
Perhaps something along these lines:
div{
background-color: rgba( , , ,0.8);
}
Unfortunately, this approach does not seem to be effective. Any suggestions or ideas to achieve this uniform alpha value adjustment?
Applying opacity to a div will affect all elements inside it, unless specified otherwise. Trying to achieve rgba(null,null,null, 0.4) may be a challenge!
If you want to apply opacity to all DIV elements, the following code should work and is compatible with most browsers.
div {
zoom: 1;
opacity:0.6;
filter:alpha(opacity=60);
-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=60)";
-moz-opacity:0.6;
-khtml-opacity: 0.6;
}
Here's a helpful tip:
let transparency = 0.4;
$("button").click(function () {
$divArray = $("div");
for(let i = 0; i < $divArray.length; i++)
{
let valArray = $("div").eq(i).css('background-color').match(/^rgb\((\d+), (\d+), (\d+)\)/);
$("div").eq(i).css('background-color', "rgba(" + valArray[1] + ", " + valArray[2] + ", " + valArray[3] + ", "+ transparency +")");
console.log($("div").eq(i).css('background-color'));
}
});
Take a look at this Fiddle.
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