On the conversion of JavaScript array and string (recommended) _javascript tips

The array class can be defined as follows:

var avalues = new Array ();

If you know the length of an array in advance, you can pass the length with parameters

var avalues = new Array (20);

------------------The following 2 definitions are the same--------1-------

var acolors = new Array ();

Acolors[0] = "Red";

ACOLORS[1] = "green";

ACOLORS[2] = "Blue";

Alert (acolors[0]); Output "Red"

-------------------------------------------------2-------

var acolors = new Array ("Red", "green", "blue"); and array definition arrays are equivalent.

Alert (acolors[0]); Output "Red" too

--------------------------

(1) Array converted to string

The above 2 arrays are defined in such a way that the output is the same, and a comma separator is found in the middle.

Alert (acolors.tostring ()); Output "Red,green,blue";

(2) string converted to array

We found that the array was converted to a string, with 1 more delimiters between the arrays ', ', and that string was converted to array arrays and must have delimiters. Can be a comma, or it can be another separator.

var scolors = "Red,green,blue";

var acolors = Scolors.split (', '); The string is converted to an array.

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