javascript return true or false from function

The usage and difference between return, return true, return false in javascript. 1. syntax and Return Method ① Return control and function results Syntax: return expression; Statement result function execution, return the call function, and return

In most cases, false is returned for the event handler to prevent the default event behavior. For example, by clicking on a element by default, the page jumps to the page specified by the href attribute of the element.Return False equals the

1. Grammar and return mode ① return control and function results Syntax is: return expression; The execution of the statement result function, returning the calling function, and returning the value of the expression as a function result ②

Article Author: TyanBlog: noahsnail.com |  CSDN | Jane book 1. The return value of JavaScript The return values in JavaScript are grouped into four categories: Return return false; return true; return variable (variable); These four return values

In most cases, false is returned for the event handler to prevent the default event behavior. For example, by clicking on a element by default, the page jumps to the page specified by the href attribute of the element.Return False equals the

Parsing instanceof in JavaScript may return true for different constructors This article mainly parses the instanceof in JavaScript for different constructors that may return true in detail. If you need it, you can refer to it for help. We know

The function of return in Javascript and the usage of the javascript return keyword are described in detail. The return in javascript is always quite popular. Do you know about the return function in javascript? The following is a detailed

  This article is mainly on JavaScript instanceof for different constructors may return true for detailed analysis, the need for friends can come to the reference, I hope to help you. We know that the instanceof operator is used to check whether

False, zero, null, undefined, and empty string objects in Javascript In Javascript, We often come into contact with the five special objects mentioned in the question -- false, 0, empty string, NullAnd undefined. These objects are easy to use

This article introduces the function of return in Javascript and the usage of the javascriptreturn keyword, which is helpful for you to learn about return in javascript, if you are interested in learning it together, the return in javascript has