Документ Получите все элементы по собственности
//This function will return an array of rgb/rgba colors declared via inline styles or CSS classes
function getAllColors() {
// regex via http://stackoverflow.com/a/7543829/149636
var rgbRegex = /^rgba?\((\d+),\s*(\d+),\s*(\d+)(?:,\s*(\d+(?:\.\d+)?))?\)$/;
var allColors = [];
var elems = document.getElementsByTagName('*');
var total = elems.length;
var x,y,elemStyles,styleName,styleValue,rgbVal;
for(x = 0; x < total; x++) {
elemStyles = window.getComputedStyle(elems[x]);
for(y = 0; y < elemStyles.length; y++) {
styleName = elemStyles[y];
styleValue = elemStyles[styleName];
if(!styleValue) {
continue;
}
// convert to string to avoid match exceptions
styleValue += "";
rgbVal = styleValue.match(rgbRegex);
if(!rgbVal) { // property does not contain a color
continue;
}
if(allColors.indexOf(rgbVal.input) == -1) { // avoid duplicate entries
allColors.push(rgbVal.input);
}
}
}
return allColors;
}
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