FarhanMS123 · January 23, 2023 10:08 · Jan 23, 2023 · Jan 23, 2023 · Jan 23, 2023 · Jan 23, 2023
diff --git a/ALGORITHM.md b/ALGORITHM.md
@@ -1,4 +1,5 @@
 # Algorithm
 
 ## List of Algorithm
-1. Range
+1. Range
+2. JS Notes
diff --git a/jsnotes.md b/jsnotes.md
@@ -0,0 +1,46 @@
+convert function to string via 
+```js
+function(){}.toString() or String(function(){})
+```
+
+convert it back to Function via 
+```js
+Function("function(){}")
+```
+
+there is a code such us this one :
+```js
+var x = function(){}; x.a = "sample 1"; x.b = "sample 2";
+```
+
+it will become : 
+```js
+{[Function], a:"sample 1", b:"sample 2"}
+```
+you can get the Function via `String(x);`
+
+"arguments" variable in function is to get an arguments from calling a function
+```js
+function x(a,b,c){console.log(arguments)}
+x("123", "abc", 555);
+```
+output : `Arguments : ["123", "abc", 555]`
+
+```js
+function y(){console.log(arguments)}
+y("123", "abc", 555);
+```
+output : `Arguments : ["123", "abc", 555]`
+
+`function.apply(null, [])` is for call an arguments.
+```js
+function x(a,b,c){console.log(`a:${a} || b:${b}`)}
+x.apply(null, ["123", "abc", 555]);
+```
+output : `a:123 || b:abc`
+
+```js
+function x(){console.log(arguments)}
+x.apply(null, ["123", "abc", 555]);
+```
+output : `Arguments[3] : ["123", "abc", 555];`
diff --git a/ALGORITHM.md b/ALGORITHM.md
@@ -1,3 +1,4 @@
 # Algorithm
 
-## List of Algorithm
+## List of Algorithm
+1. Range
diff --git a/Range.md b/Range.md
@@ -0,0 +1,28 @@
+Range is a way to decision a z-point from a-point to the b-point. <br />
+Example, we have 2 points. Point 20 and Point 70. <br />
+They have point from 20, 21, 22, 23, ..., 67, 68, 69, 70. <br />
+And not only that. They can have decimal value too, <br />
+such as 21.17453324, 21.17453325, 21.17453326, and so on. <br />
+
+so how we can got the x-point from 2 points? <br />
+like get percent value, it will solve with math. <br />
+lets say, we have 4 value. a, b, x, and v. <br />
+with `a=20, b=70, x=100, and v=60.` <br />
+a is the first value, b is the last value, x is the range from a to b, v is the point where we get, z is the point what we get. <br />
+in math, I use : <br />
+`a + v(b-a)/x = z` <br />
+why? when we want to get b from a, we should add a to (b-a) times v/x. if v same as x, then v/x= 1. so a+(b-a) = b. <br />
+1. ok lets we begin we the sample where v = 100;
+   20 + (70-20)100/100=20+50=70
+2. v = 60
+   20 + (70-20)60/100=20 + (50)60/100=50
+3. v = 40
+   20 + (70-20)40/100=20 + (50)40/100=40
+4. v=50
+   20 + (70-20)50/100=20 + (50)50/100=45
+
+Got it? <br />
+Well the function for now is <br />
+> a + v(b-a)/x = z
+
+so thank you for read this ^\_^
diff --git a/ALGORITHM.md b/ALGORITHM.md
@@ -0,0 +1,3 @@
+# Algorithm
+
+## List of Algorithm
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