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Javascript date object, array object, two-dimensional array instructions, javascript two-dimensional array
I. date object
Format: Date object name = new Date ([Date parameter])
Date parameter: 1. omitted (most commonly used)
2. English-parameter format: Month/day, AD year [hour: minute/second]
For example, today = new Date ("October 12:00:00 ");
3. Value format: year, month, day, [hour, minute, second]
For example, today = new Date (, 1 );
Copy codeThe Code is as follows:
<Html>
<Head>
<Script type = "text/javascript">
Var date = new Date ();
Var day = date. getDay ();
If (day = 0 ){
Day = "day ";
}
Document. write ("current time:" + (date. getYear () + 1900) + "year" + (date. getMonth () + 1) + "month" + date. getDate () + "day" + "Week" + day + "" + date. getHours () + ":" + date. getMinutes () + ":" + date. getSeconds ());
</Script>
</Head>
</Html>
Ii. array objects
Create an array object:
Format 1: Array object name = new Array ([number of elements])
Format 2: Array object name = new Array ([[element 1] [, element 2,…])
Format 3: array object name = [element 1 [, element 2,…]
Variable array length, array element types can be different
For example, fruit = new Array (3); // fruit = new Array ();
Fruit [0] = "apple ";
Fruit [1] = "Pear ";
Fruit [2] = "orange ";
Fruit = new Array ("apple", "Pear", "orange ");
Fruit = ["apple", "Pear", "orange"]; // The most used
Copy codeThe Code is as follows:
<Html>
<Head>
<Script type = "text/javascript">
// Var fruits = new Array ("apple", "Pear", "orange"); // more
// Var fruits = ["apple", "", "orange"]; // we recommend that you define and initialize arrays in this way. This method is the most used.
Var fruits = new Array (4); // use less
Fruits [0] = "apple ";
Fruits [1] = "Pear ";
Fruits [2] = "orange ";
Fruits [3] = "banana ";
For (var I = 0; I <fruits. length; I ++ ){
Document. writeln ("fruit [" + I + "] =" + fruits [I] + "<br> ");
}
</Script>
</Head>
</Html>
3. Two-dimensional array
Copy codeThe Code is as follows:
<Html>
<Head>
<Script type = "text/javascript">
Var fruits = new Array (3 );
Fruits [0] = new Array ("apple", 2 );
Fruits [1] = new Array ("Pears", 3 );
Fruits [2] = new Array ("Peach", 4 );
For (var I = 0; I <fruits. length; I ++ ){
For (var j = 0; j <fruits [I]. length; j ++ ){
Document. writeln ("fruits [" + I + "] [" + j + "] =" + fruits [I] [j] + "</br> ");
}
Document. writeln ("</br> ");
}
</Script>
</Head>
</Html>
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