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jquery.pseudo_element.js
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jquery.pseudo_element.js
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$(function() {
$("p").click(function(e) {
console.log($("p").afterElement({ color: "red" }));
});
$("li").click(function() {
console.log($("li").pseudoElement());
});
});
;(function($) {
var ss = document.styleSheets;
$.fn.beforeElement = function() {
return parseStylesheets(this.selector + "::before");
};
$.fn.afterElement = function(css) {
if (css) { return setStylesheets(this.selector + "::after", css); }
return parseStylesheets(this.selector + "::after");
};
$.fn.pseudoElement = function() {
return {
before: parseStylesheets(this.selector + "::before"),
after: parseStylesheets(this.selector + "::after")
};
};
var parseStylesheets = function(selector) {
var style_rule = false;
$.each(ss, function(i) {
$.each(ss[i].rules, function(j, v) {
if (v.selectorText === selector) { style_rule = v; }
});
});
style_rule && (style_rule = buildStyleObject(style_rule));
return style_rule;
};
var setStylesheets = function(selector, css) {
var style = [];
$.each(ss, function(i) {
$.each(ss[i].rules, function(j, v) {
if (v.selectorText === selector) {
$.each($.extend(buildStyleObject(v).style, css), function(k, val) {
v.style[k.replace(/[A-Z]/g, function($1) {
return "-" + $1.toLowerCase();
})] = val;
});
}
});
});
};
var buildStyleObject = function(rule) {
var o = {},
css_text = rule.style.cssText.split(";"),
css_pairs = {};
$.each(css_text, function(i) {
var k, v;
if ($.trim(css_text[i])) {
k = /^(.*): /.exec(css_text[i])[1].replace(/(-.{1})/g, function($1) {
return $1.substr(1).toUpperCase();
});
v = /:\s?(.*)$/.exec(css_text[i])[1];
css_pairs[k] = v;
}
});
o.origin = rule.parentStyleSheet.href;
o.style = css_pairs;
return o;
};
})($ || jQuery);