topic Server-side javascript : equals() or == ? in Alfresco Archive

Server-side javascript : equals() or == ?

dgenard — Fri, 21 Dec 2007 12:51:07 GMT

Hi, how does the Alfresco javascript engine computes equality ?In regular javascript, the == operator returns true if 2 string values have the same content.In Java, we know that the meaning isn't the same. We use equals() method to compare the content of 2 strings.After some investigations, I did no

Re: Server-side javascript : equals() or == ?

kevinr — Wed, 16 Jan 2008 17:35:49 GMT

The problem is that some of the strings you have are actually Java java.lang.String objects and some are javascript 'string' objects. If you do this:


var id = new String(document.id);
if (someid == id)
{…}
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then it should work.

Kevin

Re: Server-side javascript : equals() or == ?

louise — Sat, 06 Dec 2008 13:47:54 GMT

Same problem here, but the solution (.toString() isn't helps):


if(String(first_node.nodeRef) === String(second_node.nodeRef)) {
  … same nodeRef
} else {
  … different
}
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Re: Server-side javascript : equals() or == ?

sbuckle — Mon, 08 Dec 2008 14:28:18 GMT

I take it the two node references you are comparing ARE the same? I can't see anything wrong with the example JavaScript you gave. Based upon your example I came up with a quick test:


// your noderef here
var nodeRef = "workspace://SpacesStore/4658fedc-f431-45fr-b834-c7a7441zs624";

var x = search.findNode(nodeRef);
var y = search.findNode(nodeRef);

if (String(x.nodeRef) === String(y.nodeRef)) {
  logger.log("Equal");
} else {
  logger.log("Not equal");
}
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As expected, it prints out "Equal" in the log.