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nodejs-code-samples/40.function_data_type.js at master · shovon8/nodejs-code-samples · GitHub
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40.function_data_type.js
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// // Example 159 - function arguments length
// function test(a, b, c) {
// }
//
//
// console.log(test.length);
// // Example 160 - function arguments array
// function test() {
// console.log(arguments);
//
//
// // printing arguments
// for(var i = 0; i < arguments.length; i++) {
// console.log("argument " + (i + 1) + " = " + arguments[i]);
// }
// }
//
//
// test(5, 6, 8, 'test', 9);
//
// // Example 161 - checking for global variable
//
// // enable debug
// var DEBUG = true;
//
//
// // disable debug
// // DEBUG = undefined;
//
// function add(a, b) {
// var result = a + b;
//
//
// // debug log
// if(typeof DEBUG !== "undefined") {
// console.log("[*] Adding " + a + " and " + b + " and the result is " + result);
// }
//
// console.log(result);
// }
//
//
// add(5, 6);
// add(7, 9);
// // Example 162 - checking for global variable - improved
//
// // enable debug
// var DEBUG = true;
//
// // DEBUG = false;
//
// function add(a, b) {
// var result = a + b;
//
//
// // debug log
// if(typeof DEBUG !== "undefined" && DEBUG === true) {
// console.log("[*] Adding " + a + " and " + b + " and the result is " + result);
// }
//
// console.log(result);
// }
//
//
// add(5, 6);
// add(7, 9);
// Example 163 - checking for global variable - improved
// enable debug
var
DEBUG
=
true
;
// disable debug
// var DEBUG = false;
function
debug
(
)
{
return
(
typeof
DEBUG
!==
"undefined"
&&
DEBUG
===
true
)
;
}
function
add
(
a
,
b
)
{
var
result
=
a
+
b
;
// debug log
if
(
debug
(
)
)
{
console
.
log
(
"[*] Adding "
+
a
+
" and "
+
b
+
" and the result is "
+
result
)
;
}
console
.
log
(
result
)
;
}
add
(
5
,
6
)
;
add
(
7
,
9
)
;
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