JS/VJS_01.JS

        document.title = ( "JSB_DEMO.[JS/HTM]" );


//://///////////////////////////////////////////:SC[JSB_DEMO]://

var iR = 255; //: INPUT:R
var iG = 128; //: INPUT:G
var iB =  64; //: INPUT:B
var iA =  32; //: INPUT:A

//:A 1x1 bitmap:
var pix_arr = new Uint8Array( [ 0 , 1 , 2 , 3 ] );
var pix_dex = 0; //:First Pixel.
var com_dex = ( pix_dex * 4 /** 4 components per pixel **/ );

//://///////////////////////////////////////////:SC[JSB_DEMO]://

    var //://///////////////////////////////:SC[JSB_PACK]://
    u32_var = 0;  //:AKA[ R_G_B_A ]   B_M::0xRRGGBBAA
    u32_var = ( u32_var |(( iR << 24) & 0xFF000000) >>>0 );
    u32_var = ( u32_var |(( iG << 16) & 0x00FF0000) >>>0 );
    u32_var = ( u32_var |(( iB <<  8) & 0x0000FF00) >>>0 );
    u32_var = ( u32_var |(( iA <<  0) & 0x000000FF) >>>0 );
    //://///////////////////////////////////:SC[JSB_PACK]://


    { //:SCOPE:////:////////////////////////:SC[JSB_UNPK]://
        //:- - - - - - - - - - - -- - - - - - - - - - - -://
        let a = pix_arr; //:Uint8Array_Of_Pixel_Data
        let i = com_dex; //:IndexOf_1st_Component_Of_Pixel
        let v = u32_var; //:PixelValueAsUint32
        //:- - - - - - - - - - - -- - - - - - - - - - - -://
        let       B_M = 0xFF; //:Bit_Mask
        let       R_G_B_A= []; //:Components.
                  R_G_B_A[ 0 ]=( ((v >> 24) & B_M )  >>>0 );
                  R_G_B_A[ 1 ]=( ((v >> 16) & B_M )  >>>0 );
                  R_G_B_A[ 2 ]=( ((v >>  8) & B_M )  >>>0 );
                  R_G_B_A[ 3 ]=( ((v >>  0) & B_M )  >>>0 );
        var  oR=  R_G_B_A[ 0 ];
        var  oG=  R_G_B_A[ 1 ];
        var  oB=  R_G_B_A[ 2 ];
        var  oA=  R_G_B_A[ 3 ];
        a[i+0] =(oR      );;;;;
        a[i+1] =(  oG    );;;;;
        a[i+2] =(    oB  );;;;;
        a[i+3] =(      oA);;;;;
        //:- - - - - - - - - - - -- - - - - - - - - - - -://
    } //:SCOPE:////:////////////////////////:SC[JSB_UNPK]://

//://///////////////////////////////////////////:SC[JSB_DEMO]://

    if( iR  != oR
    ||  iG  != oG
    ||  iB  != iB
    ||  iA  != iA

    ||  iR  != pix_arr[ 0 ]
    ||  iG  != pix_arr[ 1 ]
    ||  iB  != pix_arr[ 2 ]
    ||  iA  != pix_arr[ 3 ]
    ){

        console.log("[FAIL]");

    }else{

        console.log("[PASS]");

    };;

//://///////////////////////////////////////////:SC[JSB_DEMO]://