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<html> <!-- Mirrored from www.tutorialspoint.com/cgi-bin/practice.cgi?file=javascript_113 by HTTrack Website Copier/3.x [XR&CO'2010], Thu, 01 Sep 2011 14:00:24 GMT --> <!-- Added by HTTrack --><meta http-equiv="content-type" content="text/html;charset=UTF-8"><!-- /Added by HTTrack --> <head> <title>JavaScript Array indexOf Method</title> </head> <body> <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; }; } function printBr(element, index, array) { document.write("<br />[" + index + "] is " + element ); } var index = [12, 5, 8, 130, 44].indexOf(8); document.write("index is : " + index ); var index = [12, 5, 8, 130, 44].indexOf(13); document.write("<br />index is : " + index ); </script> </body> <!-- Mirrored from www.tutorialspoint.com/cgi-bin/practice.cgi?file=javascript_113 by HTTrack Website Copier/3.x [XR&CO'2010], Thu, 01 Sep 2011 14:00:24 GMT --> <!-- Added by HTTrack --><meta http-equiv="content-type" content="text/html;charset=UTF-8"><!-- /Added by HTTrack --> </html> |