Differences

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--- fuss:javascript [2017/05/28 18:56] – [Hexadecimal Color to RGB Color] office
+++ fuss:javascript [2023/09/17 19:16] (current) – removed office
@@ Line 1: / Line 1: @@
-====== Wizardry and Steamworks JavaScript Libraries ======
-^ Name       ^ Link ^ Description ^
-| ''was.js'' | [[javascript/bower/packages/was.js|was.js]] | General Purpose Library |
-====== Compare Arrays ======
-The following code:
-<code javascript>
-// attach the .equals method to Array's prototype to call it on any array
-Array.prototype.equals = function (array) {
-    // if the other array is a falsy value, return
-    if (!array)
-        return false;
-    // compare lengths - can save a lot of time
-    if (this.length != array.length)
-        return false;
-    for (var i = 0, l=this.length; i < l; i++) {
-        // Check if we have nested arrays
-        if (this[i] instanceof Array && array[i] instanceof Array) {
-            // recurse into the nested arrays
-            if (!this[i].equals(array[i]))
-                return false;
-        }
-        else if (this[i] != array[i]) {
-            // Warning - two different object instances will never be equal: {x:20} != {x:20}
-            return false;
-        }
-    }
-    return true;
-}
-</code>
-will add an ''.equals'' call to arrays so you can use it as:
-<code javascript>
-var a = [ "a", "b" ];
-var b = [ "a", "c" ];
-alert(a.equals(b));
-</code>
-====== Linearly Map a Value in a Range into another Range ======
-Following the formula to [[fuss/mathematics/algebra#linearly_map_a_value_in_a_range_into_another_range|linearly map a value in a range to another range]], the javascript variation thereof can be found here.
-<code javascript>
-/*************************************************************************/
-/*    Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3    */
-/*************************************************************************/
-function wasMapValueToRange(value, xMin, xMax, yMin, yMax) {
-    return yMin + (
-        ( yMax - yMin ) * ( value - xMin ) / ( xMax - xMin )
-    );
-}
-</code>
-====== RGB Color to Hexadecimal Color ======
-<code javascript>
-function wasRGBToHex(r, g, b) {
-    return "#" + (
-        (1 << 24) +
-        (r << 16) +
-        (g << 8) +
-        b
-    ).toString(16).slice(1);
-}
-</code>
-where ''r'', ''g'' and ''b'' are in the range $[0-255]$.
-====== Hexadecimal Color to RGB Color ======
-<code javascript>
-function wasHexToRGB(hex) {
-    var shortRegEx = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
-    hex = hex.replace(
-        shortRegEx,
-        function(m, r, g, b) {
-            return r + r + g + g + b + b;
-        }
-    );
-    var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
-    return result ? {
-        r: parseInt(result[1], 16),
-        g: parseInt(result[2], 16),
-        b: parseInt(result[3], 16)
-    } : null;
-}
-</code>
-where ''hex'' can be in long or short CSS notation.