javascript experts : str = (this != window)?this:str;

[satya61229]

Hello experts
Do you know what is the use of

str = (this != window)?this:str;

in a function.
str is arg passed to that function.


regards
Satya Prakash

[acoder]

? and : is a ternary operator short for if-then-else, see link.

In your example, this is a reference to the current object, if it's not window, then set the str variable to the current object, otherwise set it to the str value that is passed.

It's short for:

if (this != window) {
 str = this;
} else {
    str = str;
}

[satya61229]

? and : is a ternary operator short for if-then-else, see link.

In your example, this is a reference to the current object, if it's not window, then set the str variable to the current object, otherwise set it to the str value that is passed.

It's short for:

if (this != window) {
 str = this;
} else {
    str = str;
}

Operator I know, but next paragraph is useful for me.
I did not get why it is checking. The function was for trimming the space.

Is it anything to do with using the function in prototype.

[acoder]

Give the whole function then.