switch(yourUseCase) {case'large_number_of_conditions':case'single_variable_evaluation':case'multiple_discrete_values':console.log('Consider using a switch statement.');break;case'complex_conditions':case'range_based_conditions':case'non_constant_cases':console.l...
switch(yourUseCase) {case'large_number_of_conditions':case'single_variable_evaluation':case'multiple_discrete_values':console.log('Consider using a switch statement.');break;case'complex_conditions':case'range_based_conditions':case'non_constant_cases':console.log('Consider using an if-else patter...
switch(expression) {case{value1}:// <-- Your Code to execute -->break// optionalcase{value2}:// <-- Your Code to execute -->break// optionaldefault:// optional// <-- Code that executes when no values match-->}constsuperhero='Spider-Man';switch(superhero) {case'Batman':console.lo...
Sometimes, we may want multiple case values to trigger the same block of code. For this, we can use multiple cases with a single block. Let's look at the example below to understand this clearly. // Program to categorize ageletage =19;switch(age) {// when age is 13, 14, or 15ca...
switch(expression) { casex: // code block break; casey: // code block break; default: //code block } This is how it works: The switch expression is evaluated once. The value of the expression is compared with the values of each case. ...
The if statementThe else statementThe else if statementRandom linkSwitch statement Conditionals Explained JavaScript Loops Loops Explained JavaScript Error Handling The try...catch statementThe try...catch statement with a confirm boxThe onerror event ...
{ var res; switch(grade) { case "A": { res = 4; break; } case "B": { res = 3; break; } case "C": { res = 2; break; } case "D": { res = 1; break; } case "F": { res = 0; break; } } return res;}function getLetterGrade(score : number) { if(score < 1)...
This causes problems when multiple case clauses attempt to define the same thing. // bad switch (foo) { case 1: let x = 1; break; case 2: const y = 2; break; case 3: function f() { // ... } break; default: class C {} } // good switch (foo) { case 1: { let x ...
It is usually called when you switch between accounts. This API clears the login status of the current account and all the data in the memory. Note: 1. When calling this API, the instance publishes the SDK_NOT_READY event. In this case, the instance is automatically logged out and ...
如果作为一个函数(不带有运算符 new)调用时,Boolean() 只将把它的参数转换成一个原始的布尔值,并且返回这个值,如果省略 value 参数,或者设置为0、-0、null、""、false、undefined或NaN,则该对象设置为 false。否则设置为 true(即使 value 参数是字符串false)。