How can I get the background color of any element, like a div, using JavaScript? I have tried:
<html>
<body>
<div id="myDivID" style="background-color: red">shit happens</div>
<input type="button" value="click me" onclick="getColor();">
</body>
<script type="text/javascript">
function getColor() {
myDivObj = document.getElementById("myDivID")
if (myDivObj) {
console.log('myDivObj.bgColor: ' + myDivObj.bgColor); // shows: undefined
console.log('myDivObj.backgroundcolor: ' + myDivObj.backgroundcolor); // shows: undefined
//alert ( 'myDivObj.background-color: ' + myDivObj.background-color ); // this is not a valid property :)
console.log('style:bgColor: ' + getStyle(myDivObj, 'bgColor')); //shows: undefined
console.log('style:backgroundcolor: ' + getStyle(myDivObj, 'backgroundcolor')); // shows:undefined:
console.log('style:background-color: ' + getStyle(myDivObj, 'background-color')); // shows: undefined
} else {
console.log('damn');
}
}
/* copied from `QuirksMode` - http://www.quirksmode.org/dom/getstyles.html - */
function getStyle(x, styleProp) {
if (x.currentStyle)
var y = x.currentStyle[styleProp];
else if (window.getCompute开发者_Python百科dStyle)
var y = document.defaultView.getComputedStyle(x, null).getPropertyValue(styleProp);
return y;
}
</script>
</html>Get at number:
window.getComputedStyle( *Element* , null).getPropertyValue( *CSS* );
Example:
window.getComputedStyle( document.body ,null).getPropertyValue('background-color');
window.getComputedStyle( document.body ,null).getPropertyValue('width');
~ document.body.clientWidth
As with all css properties that contain hyphens, their corresponding names in JS is to remove the hyphen and make the following letter capital: backgroundColor
alert(myDiv.style.backgroundColor);
Simple solution
myDivObj = document.getElementById("myDivID")
let myDivObjBgColor = window.getComputedStyle(myDivObj).backgroundColor;
Now the background color is stored in the new variable.
https://jsfiddle.net/7q1dpeo9/1/
With jQuery:
jQuery('#myDivID').css("background-color");
With prototype:
$('myDivID').getStyle('backgroundColor');
With pure JS:
document.getElementById("myDivID").style.backgroundColor
It depends which style from the div you need. Is this a background style which was defined in CSS or background style which was added through javascript(inline) to the current node?
In case of CSS style, you should use computed style. Like you do in getStyle().
With inline style you should use node.style reference: x.style.backgroundColor;
Also notice, that you pick the style by using camelCase/non hyphen reference, so not background-color, but backgroundColor;
This worked for me:
var backgroundColor = window.getComputedStyle ? window.getComputedStyle(myDiv, null).getPropertyValue("background-color") : myDiv.style.backgroundColor;
And, even better:
var getStyle = function(element, property) {
return window.getComputedStyle ? window.getComputedStyle(element, null).getPropertyValue(property) : element.style[property.replace(/-([a-z])/g, function (g) { return g[1].toUpperCase(); })];
};
var backgroundColor = getStyle(myDiv, "background-color");
Using JQuery:
var color = $('#myDivID').css("background-color");
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
加载中,请稍侯......
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