The question mark after the variable is called Optional chaining (?.) in JavaScript. The optional chaining operator provides a way to simplify accessing values through… Read More »Question mark after variable JavaScript | Example code
You can use the isArray method or instanceof operator or constructor type to Check if the variable is Array in JavaScript. The best solution is… Read More »Check if variable is Array JavaScript | Example code
Use typeof method with the not equal operator to check if a variable is defined and not empty in JavaScript. Or syntax for checking null… Read More »JavaScript check if a variable is defined and not empty | Example
Use typeof to check (determine) if the variable is defined or not in JavaScript. The typeof operator can evaluate even an undeclared identifier without throwing… Read More »JavaScript checks if the variable is defined | Example code
JavaScript does not have any print object or print methods compared to other programming languages. You can use JavaScript innerHTML, document.write(), window.alert() and console.log() to… Read More »JavaScript print variable | Example code
You can simply pass variable names into the console log method to print the value of it in JavaScript. If you want a variable with… Read More »JavaScript console log variable | Example code
Use getElementById to show JavaScript variables in the HTML attribute. This method will show variable values in a particular HTML element. var tbIndx = 10;… Read More »Use JavaScript variable in HTML attribute | Example code
Using getElementById and innerHTML property you can display JavaScript variable value in HTML table. Here is 2 step to do it. Use ids to the… Read More »How to display JavaScript variable value in HTML table | Code
Using getElementById attribute you can Pass JavaScript variable to HTML input value. Input box JavaScript code Pass variable to HTML input value using JavaScript Simple… Read More »Pass JavaScript variable to HTML input value | Example code
You can use if statement or ternary operator to use JavaScript variable in HTML. Ternary expressions will always return the first value if true, the… Read More »How to use JavaScript variable in HTML if condition | Example code