Calling function with a return only returns string without a parameter. It only outputs "Hi, I am" what am i missing here. I have searched and searched...
var string = function nameString(name) {
return "Hi, I am" + " " +name;
};
string("casey");
console.log(nameString(name));
I have also wrote it like this.
function nameString(name){
return "Hi, I am" + " " + name ;
};
nameString("casey");
console.log(nameString(name));
You're not calling it with a defined parameter, so it's not going to do anything.
Breaking down your example:
var string = function nameString(name) { // Declares a function nameString and assigns it to string
return "Hi, I am" + " " +name;
};
string("casey"); // Calls string with name:"casey" but discards the return value
console.log(nameString(name)); // Calls nameString with the undefined global variable name
That's not going to work, since you end up returning "Hi, I am " + undefined.
What you probably want to do is call nameString and then save the return value, which is written:
function nameString(name) {
return "Hi, I am" + " " +name;
};
var string = nameString("casey");
console.log(string );
In the scope outside the function the variable 'name' is undefined. You have to define the variable first, than you can pass it as an argument to the function. This way:
function nameString(name){
return "Hi, I am" + " " + name ;
};
var name = "casey";
console.log(nameString(name));
If you are not too experienced, i suggest avoiding name conflicts in order to avoid confusion, so it would be better do this way :
function nameString(name){
return "Hi, I am" + " " + name ;
};
var exernalName= "casey";
console.log(nameString(externalName));
Your Syntax is off a bit.
var string = function nameString(name) {
return "Hi, I am" + " " + name;
};
alert(string("casey"));Your function should be a function expression or a function declaration so either:
var string = namestring() {}; // function expression
or
function nameString(name) {}; // function declaration
Your first one is both and that is why it doesn't work. To fix it you should just do:
function nameString(name) {
return "Hi, I am" + " " +name;
};
console.log(nameString("casey"));
Additionally I think what you were going for in your first attemp was something like this:
function nameString(name) {
return "Hi, I am" + " " + name;
};
var string = nameString("casey"); // save this value to a var to use later
console.log(string); // use the "string" variable
