I am using objects in JavaScript and try to call a function in a object with a parameter like:
obj.func(parameter);
The function is yet simple and just log the parameter in the console, or should do it.
func: function (txt) {
console.log(txt);
}
The console just returns
undefined
which means, as far i know, there is no parameter given.
Can anyone help me?
It will be actually a Reference Error if you have not declared the parameter
Since it is undefined most likely it is uninitialized
and left only with var parameter;
Initialized with some value like
var parameter ="abc";
In js Default Value of a variable is undefined
Check this JSFIDDLE
From what I understand you either have not defined your object correctly or the parameter is undefined. Check the following code:
// Say you defined obj as follows:
var obj = {
name: 'some name',
data: 'some data',
func: function (txt) {
console.log(txt);
}
}
// Say you define paramater as follows:
var parameter = 'I am a parameter!';
// And finally you call the function like so:
obj.func(parameter);
// Or maybe like so:
obj.func('I am another parameter!');You have to instantiate your complex object properly and define a value for your parameter to show up in the console before calling your function. By default the parameter's value is undefined, thus it shows that in the console.
parameterisundefined.parameterset? If you never set the value, you're passingundefinedinto the function.undefinedor not passing any parametersundefined.