}elseif(condition2) { //block of code to be executed if the condition1 is false and condition2 is true }else{ //block of code to be executed if the condition1 is false and condition2 is false } Example If time is less than 10:00, create a "Good morning" greeting, if not, but...
no-else-return 现在,我们可以使用以下no-else-return语句简化此函数,因为无论如何我们返回的都是null: let noElseReturns = (str) => { if (typeof str == "string"){ if (str.length > 1) { return str.slice(0,-1) } } return null } noElseReturns("") // => null noElseReturns("h")...
// 1.双分支if(表达式1) { 代码块1; }else{ 代码块2; }// 2.多分支if(表达式1) { }elseif(表达式2) { } ...elseif(表达式2) { }else{ } if 嵌套 if(表达式1) {if(表达式2) { }... }... 2、switch语句 switch(表达式) {case值1: 代码块1;break;case值2: 代码块2;break;default:...
Some people run with JS disabled to avoid mail messages from being able to do something nasty but that breaks many webapps so it'd be nice to be able to, optionally, forcibly enable JS for those. leture commented Nov 8, 2011 Hi, I asked for this feature in the comments at http:/...
Lembos a Java-based library that provides an ecosystem allowing you to write your MapReduce jobs using Node.js and have them run natively within Hadoop as if written using Java. The project is packaged as a JAR file that is intended to be run via hadoop jar just as you would have you...
然后可以使用If/Else语句根据获取的SQL值执行不同的逻辑分支。 在软件测试中,获取SQL值通常是为了验证系统的正确性和稳定性。测试人员可以编写测试用例,模拟各种情况下的SQL值获取,并验证系统的响应是否符合预期。 在数据库领域,SQL值可以是表中的某个字段的值,也可以是查询结果的某个统计值。根据具体的业务需求,...
在Node.js中使用if条件是一种常见的编程技巧,用于根据特定条件执行不同的代码块。if条件语句的基本语法如下: 代码语言:txt 复制 if (condition) { // 如果条件为真,则执行这里的代码 } else { // 如果条件为假,则执行这里的代码 } 在这里,condition是一个表达式,它的结果将被解释为布尔值(true或false)。如...
JavaScript If...Else Statements... A conditional statement is a set of rules performed if a certain condition is met. These conditions are always comparing between variables and data. How to use Conditional Statements in JavaScript
} else { block of code to be executed if the condition1 is false and condition2 is false }Example If time is less than 10:00, create a "Good morning" greeting, if not, but time is less than 20:00, create a "Good day" greeting, otherwise a "Good evening": if (time < 10) {...
This JavaScript tutorial explains how to use the if-else statement with syntax and examples. In JavaScript, the if-else statement is used to execute code when a condition is TRUE, or execute different code if the condition evaluates to FALSE.