Longhand: Another option for conditionally displaying an element is the v-show directive. Syntax of if statement … In this tutorial, we shall learn following statements related to JavaScript If Else. The conditional ternary operator in JavaScript assigns a value to a variable based on some condition and is the only JavaScript operator that takes three operands. Our new condition statement is then: "If the subtotal is greater than $200, then apply a 20% discount, else if the subtotal is greater than $100 apply a 10% discount, else if the subtotal is greater than $50 then apply a 5% discount, otherwise no discount is applied." I … First condition followed by a question mark … If the condition is satisfied, the statement returns true and an action is performed else if the condition fails, another operation is performed. JavaScript If Else JavaScript If Else is used to implement conditional programming. 10. Object literal shorthand can take a little getting used to, but seasoned developers usually prefer it over a series of nested functions and variables. Questions: Can I write the ‘if else’ shorthand without the else? In such situations, you should use the switch statement. JavaScript conditional statements are used to perform various tasks based on different conditions. The ternary operator is a substitute for an if statement in which both the if and else clauses assign different values to the same field, like so: The ternary operator is the only JavaScript operator that takes three operands. JavaScript provides a conditional operator or ternary operator that can be used as a shorthand of the if else statement. It’s a one-line shorthand for an if-else statement and also called the conditional operator in JavaScript. JavaScript if else shortcut: conditional operator. If the condition is falsy, another statement can be executed. JavaScript includes following forms of conditional statements: 1. if statement 2. else statement 3. else if statement 4. switch statement The multiple condition "if" is structured with "else if" sections like this: The ternary operator is a shorthand technique for assigning one of two values based on a condition. Implicit Return Shorthand. Function Variable Arguments Shorthand. Return is a keyword we use often to return the final result of a function. Note that the elements are still efficiently re-used, because they don’t have key attributes.. v-show. The if statement executes a statement if a specified condition is truthy. JavaScript elseIf statement is used to cause the flow of execution to branch based on changes to the lines of the program. dosomething:doNothingButContinueCode; I’ve noticed putting ‘null’ for the else works but I have no idea why or if that’s a good idea. The usage is largely the same: < h1 v-show = "ok" > Hello! The difference is that an element with v-show will always be rendered and remain … JavaScript ternary operator is frequently used as a shortcut for the if statement. If statement If-else statement if-else-if statement Nested If-else JavaScript If It is used to conditionally execute a set of statements. You can argue which technique is shorter, but I enjoy using object literal notation as a clean substitute to functions as constructors. Rest assured it’s purely out of curiosity. EDIT: Some of you seem bemused why I’d bother trying this. If you chain many if else statements, the code will become hard to read and difficult to maintain. eg: var x=1; x==2? 9.