JavaScriptVoidfunction return value is used as the return type of function that does not return any value. Thevoidoperator is often used for obtaining theundefinedprimitive value. void expression Void function
Many web pages use JavaScript to perform complex interactions between the user and the page. It is important to know how to execute JavaScript functions from within Internet explorer. The simplest method is to useNavigatewith the prefixjavascript:then the function name. However, this does not give...
functioncreateCompare(property){returnfunction(obj1,obj2){varvalue1=obj1[property], value2=obj2[property];if(value1<value2)return-1;elseif(value1>value2)return1;elsereturn0; } } vardata=[{name:'aa',age:20},{name:'bb',age:12},{name:'cc',age:30}]; data.sort(createCompare("age...
function createCompare(property){ return function(obj1,obj2){ var value1=obj1[property], value2=obj2[property]; if(value1<value2) return -1; else if(value1>value2) return 1; else return 0; } } var data=[{name:'aa',age:20},{name:'bb',age:12},{name:'cc',age:30}]; data...
return的返回值 return 只能返回一个值。如果用逗号隔开多个值，以最后一个为准。functionadd(num1，num...
整理了JavaScript中函数Function的各种,感觉函数就是一大对象啊,各种知识点都能牵扯进来,不单单是 Function 这个本身原生的引用类型的各种用法,还包含执行环境,作用域,闭包,上下文,私有变量等知识点的深入理解。 函数中的return return 语句可以不带有任何返回值,在这种情况下( return; 或函数中不含 return 语句时),...
functionmyFunction(name) { return"Hello "+ name; } Try it Yourself » More examples below. Description Thereturnstatement stops the execution of a function and returns a value. Read our JavaScript Tutorial to learn all you need to know about functions. Start with the introduction chapter abou...
return 语句的语法格式如下：// 声明函数function函数名（）{...return需要返回的值；}// 调用函数...
Example 2: With and Without Using call() Method // function that finds product of two numbersfunctionproduct(a, b){returna * b; }// invoking product() without using call() methodletresult1 = product(5,2);console.log("Return value Without using call() method: "+ result1); ...
一个function 如果没有显式的通过 return 来返回值给其调用者的话,其返回值就是 undefined 。有一个特例就是在使用new的时候。 JavaScript 中的 function 可以声明任意个形式参数,当该 function 实际被调用的时候,传入的参数的个数如果小于声明的形式参数,那么多余的形式参数的值为 undefined 。