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This is pretty much the heart of a few of my snippets. You can apply it to any object, not just nodes. Keep in mind though that it doesn't discriminate datatypes. It'll look at 2 != "2" and return false. Just change the operation to fix this. Description: Compares the properties/methods/objects of two objects and returns true if they are alike. Syntax: correlate(object, comparison object)function correlate(a, b) {
for(var x in b) {
if(!a[x] && !b[x])
continue;
if(!a[x] && b[x] || a[x] && !b[x])
return false;
else if(a[x] && b[x].constructor == Object) {
if(!correlate(a[x], b[x]))
return false;
} else if((b[x].constructor == RegExp ? !a[x].match(b[x]) : a[x].toString() != b[x].toString()))
return false;
}
return true;
}Example: var i = document.body;
correlate(i, { nodeName: "BODY" })
// true, objects have same nodeName property
correlate({ nodeName: "BODY" }, i)
// false, first object lacks properties, methods, and/or objects of document.body
correlate(new Array("L"), new Array("K")) // false
correlate({ name: "dErfleurer", age: 16 }, { name: /der/i }) // true
Last Edit: Jun 16, 2007 19:09:47 GMT by Aaron
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Just an update to the previous snippet. Some performance enhancements and the ability to recognize unique boolean false values like 0, undefined, and null.
function correlate(a, b) {
for(var x in b) {
var c = a[x], d = b[x];
if(!c && !d && c === d)
continue;
if(c && d) {
if(typeof c == typeof d) {
if(typeof c == "object") {
if(correlate(c, d))
continue;
} else if(c.toString() == d.toString())
continue;
} else if(d.constructor == RegExp && d.test(c.toString()))
continue;
}
return false;
}
return true;
}
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