CODEWITHSUNDEEP
javascript
Phillip Senn
Phillip Senn

Reputation: 47605

&& means: AND, || means OR

Is there a way through some sort of meta or pre-processor to tell JavaScript that the word AND equates to && and the word OR equates to || and <> equates to !===?

Maybe equate THEN to {

END to }

NOT to !

Upvotes: 1

Views: 1597

Answers (4)

Ry-
Ry-

Reputation: 224913

No. Don't do it.

... well, there is a way, but don't do it anyways...

Here it is....

function loadScriptWithReplacements(url) {
     try {
          var rq = null;
          if(window.XMLHttpRequest)
               rq = new XMLHttpRequest();
          else if(window.ActiveXObject) {
               try {
                    rq = new ActiveXObject("Msxml2.XMLHTTP");
               } catch(o) {
                    rq = new ActiveXObject("Microsoft.XMLHTTP");
               }
          }
          rq.open("GET", url, false);
          rq.send(null);
          document.write('<script>' + rq.responseText.replace(/(and|or|\<\>)/g, function(r) {
               return {
                    'and': '&&',
                    'or' : '||',
                    '<>' : '!=='
               }[r];
          }) + '</script>');
     } catch(ex) {
          // We can't have a fallback because you're using invalid JavaScript :(
          throw new Error("Could not use Ajax.");
     }
}

But, DO NOT DO THAT! You could also perform the replacements server-side, but DON'T DO THAT EITHER!

Doing it server-side increases the strain on your server, doing something that could be avoided by just remembering how to write JavaScript correctly.

Upvotes: 6

matchew
matchew

Reputation: 19645

No, there is no way to do that. Well, theoretically, it could be done, but it would be slow and or difficult. Is there a good reason to use AND in place of && and OR in place of || ?

I suppose you could pre-process your code using awk,sed,perl,python,bash,[insert favrotie scripting language], but why?

Upvotes: 2

Mike Samuel
Mike Samuel

Reputation: 120516

Coffescript uses a rewriter to provide syntactic sugar. http://jashkenas.github.com/coffee-script/

From the section titled "If, Else, Unless, and Conditional Assignment" The coffeescript

if happy and knowsIt
  clapsHands()
  chaChaCha()
else
  showIt()

is rewritten to

if (happy && knowsIt) {
  clapsHands();
  chaChaCha();
} else {
  showIt();
}

Upvotes: 3

rid
rid

Reputation: 63442

No, there is no way to do that.

Upvotes: 2

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