springheeledjak · May 25, 2024 16:51 · bukowa · May 25, 2024
diff --git a/0-js.md b/0-js.md
diff --git a/1-null.js b/1-null.js
 $ node
 > null < 1
 true
 > null > -1
 true
 > null < 0
 false
 > null > 0
 false
 > null == 0
 false
 > null + 0
 0
diff --git a/2-undefined.js b/2-undefined.js
 $ node
 > undefined < 1
 false
 > undefined > -1
 false
 > undefined < 0
 false
 > undefined > 0
 false
 > undefined == 0
 false
 > undefined == null
 true
diff --git a/3-object.js b/3-object.js
 $ node
 > obj = {}; obj++; obj
 NaN
 > obj = {}; obj--; obj
 NaN
 > obj = {}; obj += 1
 '[object Object]1'
 > obj = {}; obj -= 1
 NaN
diff --git a/4-array.js b/4-array.js
 $ node
 > arr = []; arr++; arr
 1
 > arr = []; arr--; arr
 -1
 > arr = []; arr += 1
 '1'
 > arr = []; arr -= 1
 -1
 > arr = []; arr += []
 ''
diff --git a/5-string.js b/5-string.js
 $ node
 > '' == 0
 true
 > str = ''; str += 1
 '1'
 > str = ''; str -= 1
 -1