javascript &&
JavaScript
a1 = true && true // t && t returns true
a2 = true && false // t && f returns false
a3 = false && true // f && t returns false
a4 = false && (3 == 4) // f && f returns false
a5 = 'Cat' && 'Dog' // t && t returns "Dog"
a6 = false && 'Cat' // f && t returns false
a7 = 'Cat' && false // t && f returns false
a8 = '' && false // f && f returns ""
a9 = false && '' // f && f returns false
//& (bitwise AND) operator
console.log(5 & 13); //outout: 5
/*
5 = 0101 (base 2)
13 = 1101 (base 2)
//AND every bit together from both numbers
+----+
|0101|
|1101|
+----+
|0101|
+----+
0101 = 5 (base 10)
*/
//&& returns true if both values are true
//or returns the second argument if the first is true
var a = true
var b = ""
var c = 1
true && "" //""
"" && 1 //""
false && 5 //false
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