function myFunction(a, b) {
return a * b;
}
myFunction(10, 2); // myFunction(10, 2) 返回 20
function myFunction(a, b) {
return a * b;
}
window.myFunction(10, 2); // window.myFunction(10, 2) 返回 20
function myFunction() {
return this;
}
myFunction(); // 返回 window 对象
var myObject = {
firstName:"John",
lastName: "Doe",
fullName: function () {
return this.firstName + " " + this.lastName;
}
}
myObject.fullName(); // 返回 "John Doe"
var myObject = {
firstName:"John",
lastName: "Doe",
fullName: function () {
return this;
}
}
myObject.fullName(); // 返回 [object Object] (所有者对象)
// 构造函数:
function myFunction(arg1, arg2) {
this.firstName = arg1;
this.lastName = arg2;
}
// This creates a new object
var x = new myFunction("John","Doe");
x.firstName; // 返回 "John"
function myFunction(a, b) {
return a * b;
}
myFunction.call(myObject, 10, 2); // 返回 20
function myFunction(a, b) {
return a * b;
}
myArray = [10,2];
myFunction.apply(myObject, myArray); // 返回 20
functionName(parameter1, parameter2, parameter3) {
code to be executed
}
function myFunction(x, y) {
if (y === undefined) {
y = 0;
}
}
function myFunction(x, y) {
y = y || 0;
}
x = findMax(1, 123, 500, 115, 44, 88);
function findMax() {
var i, max = 0;
for (i = 0; i < arguments.length; i++) {
if (arguments[i] > max) {
max = arguments[i];
}
}
return max;
}
x = sumAll(1, 123, 500, 115, 44, 88);
function sumAll() {
var i, sum = 0;
for (i = 0; i < arguments.length; i++) {
sum += arguments[i];
}
return sum;
}
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