Why does console.log say undefined, and then the correct value?
42442
Chrome/Firefox console.log always appends a line saying 'undefined'
83782
How to check a not-defined variable in JavaScript
134603
Why doesn't a Javascript return statement work when the return value is on a new line?
95117
How do I pass variables to JavaScript?
143867
Why do I get an empty object when a function is invoked in node.js?
91315
How can I make console.log show the current state of an object?
32989
Is there a symbol to mean 'this is undefined'?
154299
Is the output of printf ("%d %d", c++, c); also undefined?
36647
Why does printf("%f",0); give undefined behavior?
619
Why are these constructs using pre and post-increment undefined behavior?
131478
Why are jQuery's callback arguments inconsistent?
134996
How can I temporarily disable the "return value might be undefined" warning?
73021
Javascript : is given function empty?
14660
Undefined variable as function argument javascript
92587
Surprised that global variable has undefined value in JavaScript
99292
Why aren't variables declared in "try" in scope in "catch" or "finally"?
96061
Console returns undefined