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This table shows each JavaScript method in action...

JavaScript	Result
undefined
Arrays
var a = new Array; a.push(2,3); a.push("Hello world."); a[7] = 7; a[10] = 10;
a.pop();
a.unshift("a","b","c");
a.shift();
a.splice(2,2,"one", "two");
Dates
var d = new Date; d.toDateString(); d.toUTCString(); d.toTimeString(); d.toLocaleTimeString(); d.toLocaleDateString();
Numbers
(12.3456789).toFixed(5); (12.3456789).toExponential(3); (12.3456789).toPrecision(4);
Strings
"JavaScript".localeCompare("javascript"); "Java".localeCompare("javascript");
"JavaScript".charCodeAt(5);
"JavaScript".toLocaleUpperCase(); "JavaScript".toLocaleLowerCase();