You can add this directive to a container element (like: div) and set the expression that acts as the selection condition. This is the same as a switch-case of other languages (like C, C++, Java, C# and so on), in these language various conditions are defined in the case statement ...
const gradeMap = { 'A': score => score >= 90, 'B': score => score >= 80, 'C': score => score >= 70, 'D': score => score >= 60, 'F': () => true }; function getGrade(score) { for (const [grade, condition] of Object.entries(gradeMap)) { if (condition(score))...
// use the switch for (const { condition, fn } of customSwitch) { if (myValue === condition) { fn(); break; } } customSwitch,可能具有对象的形式,这可能会提高可读性。例如:customSwitch = { myCond: { condition, fn }} 您可以单击上面的代码片段以查看它是否正常工作;) const customSwitch...
a condition switch library for js/ts. Latest version: 0.1.1, last published: 8 months ago. Start using condition-switch in your project by running `npm i condition-switch`. There are no other projects in the npm registry using condition-switch.
JS Math Functions JS Array Methods This JavaScript tutorial explains how to use the switch statement with syntax and examples. Description In JavaScript, the switch statement is used to execute code based on the value of an expression. Syntax ...
…else语句 适合多选一if(condition1) { 当条件1成立时执行的代码 }elseif(condition2) { 当条件2成立 时执行的代码 }else{ 当条件1和条件2都不成立时执行的代码 } 四、switch语句 适合多选一switch(表达式) {case值1:执行代码块1break;case值2:执行代码块2break ...
例如:if(condition){ //条件判断 statement_1; //条件为真执行 }else{ statement_2; //其他情况 }condition可以是任何返回结果备计算为true或false的表达式,通常0,false,undefined, javascript 条件判断 switch语句 html 转载 killads 2023-12-07 07:26:17 85阅读 ...
在js中,switch case语句在比较的时候用的是全等,即condition === case 1let a = "1";2switch(a){3case1:4console.log("执行case分支");5break;6default:7console.log("执行default分支")8}910//由于switch case语句在比较的时候用的是全等,并且由于a是字符串1,case里是数字1,两者类型不相等,所以上面...
The else statement is another conditional statement in JavaScript. Unlike if, it couldn't be specified alone — there has to be an if statement preceding an else. So what's else used for? The else statement executes a piece of code if the condition in the preceding if statement isn't me...
javascript多条件js多条件判断 经常code review,我发现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但是过多的嵌套,还是挺令人抓狂的。这里有一个很典型的条件嵌套:function func() { var result; if (conditionA) { if ...