代码语言:javascript 代码运行次数:0 运行 AI代码解释 格式: if [ 条件判断式 ];then 程序 fi 或者 if [ 条件判断式 ] then 程序 fi 单分支条件语句需要注意几个点 ①if语句使用fi结尾,和一般语言使用大括号结尾不同 ②[ 条件判断式 ]就是使用test命令判断,所以中括号和条件判断式之间必须有空格 ③then后面...
JavaScript Example of if else if: In this tutorial, we will learn how if else if works in JavaScript? Here, we are writing a JavaScript example to demonstrate the use and working of if else if in JavaScript.
In this JavaScript code, a variable called age is created and assigned a value of 15. Using an if statement, the code then checks if age is greater than or equal to 18. If the condition is true, the program prints, “You are an adult.” If the condition is false, it prints “You...
@echo off set "file=example.txt" if exist "%file%" ( echo 文件存在 ) else ( echo 文件不存在 ) 在这个示例中,我们使用了exist关键字来检查文件是否存在。如果文件存在,我们输出“文件存在”,否则输出“文件不存在”。 需要注意的是,if/then/else语句必须在批处理脚本中使用,而不能在命令行中直接使用...
Live Example Perfect! Note that it's invalid to put an else statement without a preceding if statement. Even logically, this sounds weird. We're used to sentences like 'if this, then that, or else that', not to sentences like 'else that' where the 'else' seems to appear out of nowh...
The onmouseout event handler is executed when the user's mouse was over an element and then moves its focus off of it. On Mouseout Onmouseover Event Handler Example The onmouseover events is called when the user's mouse button is hovering over the element. On Mouseover Onkeyup Event Handler...
How fetch data in JavaScript?Firstly you must prepare a Javascript file / script / HTML file / CSS file. Then put the API URLs into a variable (api_url). Make the async function (see the getapi() function) passapi apiurl into the api_url function. Defines a constant response and ...
JavaScript If Else: Conditional statements are also called “if/then” statements, because they perform a task only if the answer to a question is true: “If I have enough money then I’ll go to the movies.” The basic script of a JavaScript If Else look
else if” conditional statement within JavaScript. if (condition) { //Code is ran when above condition is true } else if (condition) { //If the first condition is false and //the above condition is true, then this block will be ran }Copy Example of using the if else if Statement ...
Example If Else If statement: function analyzeColor3(myColor) { if (myColor == "Blue") { alert("Just like the sky!"); } else if (myColor == "Red") { alert("Just like shiraz!"); } else { alert("Suit yourself then..."); } } Favorite Color Blue Red ...