如何使用 boolean 在 javascript 中定义变量

Question

i want to define a variable using javascript for my pac-man, ( https://github.com/JavascriptCoder999/pac-man256 )

i tried...

var myVariable=0;
if(//myVariable is 0){
//definition
}

could be false or true if "0" doesn't work you could use a for loop though

Answer 1

var myVariable = myVariable ? myVariable : "someValue"
// Will be set to "someValue"
// if not initialized, 0 , -0, "", false, null or undefined