IF ELSE语句是一种条件语句,用于根据特定条件执行不同的代码块。它的基本语法是: ``` if (条件) { // 如果条件为真,执行这里的代码 } else { // 如果条件...
带有多次重复的if else语句内的Applescript if else语句 、、、 "document.readyState" in document 1) is "complete" then else-- not sure if this second else is needed, why not just wait until the first access hasnew hyperlink of cell ("K" & r) with properties {address:t 浏览2提问于2014...
What is control flow The if and else conditionals The switch conditional The for loop The while loop Introduction Perhaps, one of the most paramount aspects of modern-day programming is that of control flow. This chapter is devoted briefly exploring the different kinds of control flow constructs ...
JavaScript else StatementWe use the else keyword to execute code when the condition specified in the preceding if statement evaluates to false.The syntax of the else statement is:if (condition) { // block of code // execute this if condition is true } else { // block of code // ...
...else默认流程语句endcase; 三、循环语句:无条件循环 无条件循环在循环开始时,不指定循环条件,但是必须在循环内部指定跳出循环的条件(如if判断,或exit when形式等),否则该循环将一直执行,造成死循环。 loop 循环操作endloop; --输出员工ID处理1--5之间的所有员工姓名declarev_idnumber:=0; ...
javascriptifelse不出来 javascriptforeach s中那么多循环,for for…in for…of forEach,有些循环感觉上是大同小异今天我们讨论下for循环和forEach的差异。 我们从几个维度展开讨论: for循环和forEach的本质区别。 for循环和forEach的语法区别。 for循环和forEach的性能区别。
raise StopIteration # exception to check loop defmatch(self,*args):ifself.fall or not args:returnTrue elif self.valueinargs:# successful self.fall=TruereturnTrueelse:# failreturnFalse operator="+"x=1y=2forcaseinswitch(operator):ifcase('+'):print x+ybreakifcase('-'):print x-ybreakifca...
function f(x, y, z) { console.log(x+ y +z) }varargs = [2,3,4] f(...args) 条件判断 if(cond1){ pass }elseif(cond2){ pass }elseif(cond3){ pass } 条件false等效falseundefinednull0NaN'' switch case switch(expression){caselabel_1: ...
Using Inbuilt function in JavascriptHowever, instead of writing a loop for this case, you can use the inbuilt function of Array.indexOf () for the same case. If the value exists, then the function will return the index value of the element, else it will return -1...
5 elseif num=2 then 6 set str='二'; 7 end if; 8 end; 9 --调用 10 call pd_testif2(1,@str); 11 select @str; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 执行结果:一 2、循环 mysql:while 条件 do Oracle:while 条件 loop ...