[RESOLVED] in_array() javascript equivalent

[jmack159]

is there an equivalent in javascript to php's in_array()?

thanks!

--Josh

[JPnyc]

No, I don't believe there is. I think you have to loop through to check for a value.

[bradgrafelman]

Actually, you could use the indexOf() function:

<script type="text/javascript">
var myTest = new Array();
myTest[] = 'foo';
myTest[] = 'bar';

if(myTest.indexOf('foobar') == -1) {
	alert('No foobar found!');
}
if(myTest.indexOf('bar') != -1) {
	alert('Bar was found in index #' + myTest.indexOf('bar'));
}
</script>

[JPnyc]

You have to use that, but my point was you have to loop through the array to test for anything contained in it, or absent from it.

[NogDog]

Since indexOf() as an array method is a JavaScript 1.6 extension to the ECMA standard, you'll need to do the following so it works in IE and other browsers that do not support that extension (from this page):

<script type="text/javascript">
if (!Array.prototype.indexOf)
{
  Array.prototype.indexOf = function(elt /*, from*/)
  {
    var len = this.length;

var from = Number(arguments[1]) || 0;
from = (from < 0)
     ? Math.ceil(from)
     : Math.floor(from);
if (from < 0)
  from += len;

for (; from < len; from++)
{
  if (from in this &&
      this[from] === elt)
    return from;
}
return -1;
  };
}
var myTest = new Array(); 
myTest.push('foo'); 
myTest.push('bar'); 
if(myTest.indexOf('foobar') == -1) { 
   alert('No foobar found!'); 
} 
if(myTest.indexOf('bar') != -1) { 
   alert('Bar was found in index #' + myTest.indexOf('bar')); 
} 
</script>

[jmack159]

maybe it would help if i explained what im trying to do. i have this function which is a callback for a js date picker. it returns true if the date should be disabled, and false if the date should not be disabled. currently blocks past dates, and dates a certain distance in the future defined by MAX_ADV_TIME.

function dateStatus(date) {
		var min = new Date('<?php echo date('m/d/Y'); ?>');
		var max = new Date('<?php echo date('m/d/Y', time() + MAX_ADV_TIME); ?>');

	if(date.getTime() < min.getTime() || date.getTime() > max.getTime()){
		return true; // true says "disable"
	}else{
		return false; // leave other dates enabled
	}
};

i want to be able to pass an array of dates that should be disabled in the date picker. i want to pass the array from php to js (should i use json? and if so how?).

any help would be great! thanks!!

[JPnyc]

Well I would do it completely differently. I would grab the current date and have a fixed number of additions to it.

[jmack159]

i found another work around in a forum thread on the website for the date selector. thank you for your help.