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var date_obj = new Date ("January 1 1997 00:00:00")
and
var date_obj = new Date (97, 0, 1, 12, 0, 0)
To use a Date method, append the method to the date object you previously created. For example, to return the current year, use:
var now = new Date();
var yearNow = now.getYear();
For your reference, here are the methods supported by JavaScript's Date object.
| getDate | Returns the day of month of a specified date |
| getDay | Returns the day of week of a specified date |
| getHours | Returns the hour of a specified date |
| getMinutes | Returns the minutes of a specified date |
| getMonth | Returns the month of a specified date |
| getSeconds | Returns the seconds of a specified date |
| getTime | Returns the number of seconds between January 1, 1970 and specified date |
| getTimeZoneoffset | Returns the time zone offset in minutes for the current loca le |
| getYear | Returns the year of specified date |
| parse | Returns the number of milliseconds in a data since January 1, 1970, 00:00:00 |
| setDate | Sets the date |
| setHours | Sets the hours of a specified date |
| setMinutes | Sets the minutes of a specified date |
| setMonth | Sets the month of a specified date |
| setSeconds | Sets the seconds of a specified date |
| setTime | Sets the time of a specified date |
| setYear | Sets the year of a specified date |
| toGMTString | Converts a date to a string using GMT conventions |
| toLocaleString | Converts a date to a string using locale conventions |
| toString | Converts the value of a Date object or current location object to a string |
| UTC | Converts a comma-delimited date to the number of seconds since Jan 1, 1970 < /TD> |
JavaScript supports two (currently) undocumented object constructors: Array and Object. Both do a similar job, but are used in different situations. In JavaScript, an array is really just an object, using numbers or associative names for the array elements. You can create new arrays and objects with either constructor, but for readability, you'll probably want to use the constructor that is most closely associated with your application. Use Array when creating an array; use Object when creating an object.
Let's tackle the Array constructor first.
In JavaScript you can create an array explicitly using your own constructor function. Here is a n example of a basic array constructor.
function makeArray(numElements) {
this.length = numElements
for (count = 1; count <= numElements; count++)
this[count] = 0;
return (this);
}
To define a new array, you call the makeArray function using the new statement. The following example creates an array with three elements, and fills them with data.
var myArray = new makeArray(3);
myArray[1] = "item 1";
myArray[2] = "item 2";
myArray[3] = "item 3";
Actually, JavaScript doesn't much care how you make your arrays. Though you can define the number of elements in the array,
the makeArray function uses this value only to pre-load an initial value in the first three elements. (Element 0 contains the length of
the array; element[0] is synonymous with the length property.) You can add additional elements at any time, even after the
array has been created.