javascript

function traverseTree (node, func) {
func(node);
node = node.firstChild;
while (node !== null) {
traverseTree(node, func);
node = node.nextSibling;
}
} ;
var findClass = document.getElementsByClassName ?
function (name, root) {
root = root || document.documentElement;
return root.getElementsByClassName(name);
} :
document.querySelectorAll ?
function (name, root) {
root = root || document.documentElement;
return root.querySelectorAll("." + name);
} :
function (name, root) {
var found = [];
root = root || document.documentElement;
traverseTree(root, function (node) {
if (!! node.className) {
for (var names = node.className.split(/\s+/), i = names.length; i --; ) {
if (names[i] === name) {
found.push(node);
}
}
}
});
return found;
} ;
var queryCascade = window.getComputedStyle ?
function (element, property) {
return getComputedStyle(element, null)[property];
} :
function (element, property) {
return element.currentStyle[property];
} ;
var doZ = function () {
var z = 400;
return function () {
return z ++;
};
}();
var getCookie = function (name) {
var batch = document.cookie, i, firstCut, secondCut;
i = batch.indexOf(name + "=");
if (i !== -1) {
firstCut = i + name.length + 1;
CHAPTER 10 ■ SCRIPTING BOM
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