return b; Calling the function with () in a return statement executes the function, and returns whatever value was returned by the function. It is similar to calling var x = b();, but instead of assigning the return value of b() you are returning it from the calling function a(). I...
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return b; Calling the function with () in a return statement executes the function, and returns whatever value was returned by the function. It is similar to calling var x = b();, but instead of assigning the return value of b() you are returning it from the calling function a(). I...
JavaScript Array JS Multidimensional Array JavaScript String JavaScript for...in loop JavaScript Number JavaScript Symbol Exceptions and Modules JavaScript try...catch...finally JavaScript throw Statement JavaScript Modules JS ES6 JavaScript ES6 JavaScript Arrow Function JavaScript Default Parameters JavaScript ...
return a + b; })(15, 50); console.log(sum); We define an addition function which is immediately executed with two parameters. The result is stored in thesumvariable. $ node main.js 65 Source JS functions In this article we have covered JavaScript functions. ...
Functions return only one value. How can we simulate returning multiple values from a function?When we call a function in JavaScript, we can only return one value using the return statement:const getAge = () => { return 37 } const getName = () => { return 'Flavio' }How can we ...
returna * b; } Try it yourself » Semicolons are used to separate executable JavaScript statements. Since a functiondeclarationis not an executable statement, it is not common to end it with a semicolon. Function Expressions A JavaScript function can also be defined using anexpression. ...
returna * b; } Try it Yourself » Semicolons are used to separate executable JavaScript statements. Since a functiondeclarationis not an executable statement, it is not common to end it with a semicolon. Function Expressions A JavaScript function can also be defined using anexpression. ...
Date();document.write(today.toLocaleString())" eval(s) //--> </SCRIPT> </BODY> </HTML> 例 4.1.2 <HTML> <HEAD> <TITLE>在eclipse中直接open with火狐即可</TITLE> </HEAD> <BODY> <SCRIPT LANGUAGE="JavaScript"> <!-- //例1 var s = "2+31-18"; /*When the eval() function is...
from functions defined in a “habitual” way?”: 传统的函数声明是: function foo() { ... } Or, “why in the next call, the function has to be surrounded with parentheses?”: 或者,下面的函数调用,为什么要用括号包围起来。 (function () { ...