// 嵌套的 if/else 导致代码难以阅读functiongetDiscount(user){if(user.type==='premium'){if(user.years>5)return0.25;elsereturn0.15;}elseif(user.type==='standard'){if(user.years>3)return0.10;elsereturn0.05;}else{return0;}}// 冗长的 switch 语句functiongetColorCode(color){switch(color){case...
JavaScript用if语句判断两个变量的布尔值 js if判断多个条件怎么写 经常code review,我发现JS newbie很容易写出一堆冗长的代码。今天就列几个比较常见的“解决之道”,看看如何减少JS里的条件判断。 提前返回,少用if...else “if...else是编程语言的精华。——鲁迅” 但是过多的嵌套,还是挺令人抓狂的。这里有一...
In the code below, we accomplish this idea with the help of switch: JavaScript var code = Number(prompt('Enter an HTTP response code:')); var msg; switch (code) { case 200: msg = 'OK'; break; case 302: msg = 'Found'; break; case 404: msg = 'Not Found'; break; case 500:...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 packageinterimport("lexer")type Or struct{logic*Logic//它负责处理||, &&, !,等操作符一些共同的逻辑expr1*Expr// "||"前面的表达式expr2*Expr// "||"后面的表达式}funcNewOr(line uint32,token*lexer.Token,expr1*Expr,expr2*Expr)*Or{return&O...
(code string){r.logic.Emit(code)}func(r*Rel)Gen()ExprInterface{returnr.logic.Gen()}func(r*Rel)Reduce()ExprInterface{returnr}func(r*Rel)Type()*Type{returnr.logic.Type()}func(r*Rel)ToString()string{returnr.logic.ToString()}func(r*Rel)Jumping(t uint32,f uint32){expr1:=r.expr...
Logical NOT (!) - JavaScript | MDN (mozilla.org) How to negate code in "if" statement block in JavaScript -JQuery like 'if not then..' Views:369 Can't find what you're searching for? Let us assist you. Enter your query below, and we'll provide instant results tailored to your ne...
Use theifstatement to specify a block of JavaScript code to be executed if a condition is true. Syntax if(condition) { //block of code to be executed if the condition is true } Note thatifis in lowercase letters. Uppercase letters (If or IF) will generate a JavaScript error. ...
I have some code for JavaScript that is supposed to check if a File exists. In this example it checks the local file system and uses ActiveX.What I wonder is how it will be possible to check for this file that is located on the server ?
// JavaScript function sendMoney(account, amount) { if (account.balance > amount) { if...
JavaScript if...else StatementIn computer programming, the if...else statement is a conditional statement that executes a block of code only when a specific condition is met. For example,Suppose we need to assign different grades to students based on their scores....