Set property
In this chapter you will learn:
Set CSS property
<!DOCTYPE HTML><!--from jav a 2 s . co m-->
<html>
<head>
<style title="core styles">
p {
color: white;
border: medium double black;
background-color: gray;
padding-top: 5px;
}
</style>
</head>
<body>
<p id="block1">This is a test.</p>
<div>
<button id="pressme">Press Me</button>
</div>
<div id="placeholder"></div>
<script>
var placeholder = document.getElementById("placeholder");
displayStyles();
document.getElementById("pressme").onclick = function() {
var styleDeclr = document.styleSheets[0].cssRules[0].style;
styleDeclr.setProperty("background-color", "lightgray");
styleDeclr.setProperty("padding-top", "20px");
styleDeclr.setProperty("color", "black");
displayStyles();
}
function displayStyles() {
if (placeholder.hasChildNodes()) {
var childCount = placeholder.childNodes.length;
for ( var i = 0; i < childCount; i++) {
placeholder.removeChild(placeholder.firstChild);
}
}
var newElem = document.createElement("pre");
newElem.setAttribute("border", "1");
var style = document.styleSheets[0].cssRules[0].style;
newElem.innerHTML+="border"+ style.getPropertyValue("border");
newElem.innerHTML+="color"+ style.getPropertyValue("color");
newElem.innerHTML+="padding-top" +style.getPropertyValue("padding-top");
newElem.innerHTML+="background-color"+style.getPropertyValue("background-color");
placeholder.appendChild(newElem);
}
</script>
</body>
</html>
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What you will learn in the next chapter:
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