Feb 28, 2019 · I want to take a number input (id="number") and save it as "x". Then make another variable, "y", that is 5% of "x". And then I want to add them together and save the result in a variable called "result". Let's say that x = 100. Then y = 5.

May 7, 2011 · var str1 = "Hello "; var str2 = "world!"; var res = str1.concat(str2); //will return "Hello world!" Its syntax is: string.concat(string1, string2, ..., stringX)

Oct 5, 2011 · use parseInt(age_child) + parseInt(age_gap); Trying to add two integer variables together, however, I can't seem to figure it out as it just joins them as strings? var age_child = 10; var age_gap = 10 alert (age_child+age_gap); Result: 1010...

When to Use var, let, or const? 1. Always declare variables. 2. Always use const if the value should not be changed. 3. Always use const if the type should not be changed (Arrays and Objects) 4. Only use let if you can't use const. 5. Only use var if you MUST support old browsers.

Arithmetic operators perform arithmetic on numbers (literals or variables). A typical arithmetic operation operates on two numbers. The two numbers can be literals: or variables: or expressions: The numbers (in an arithmetic operation) are called operands. The operation (to be performed between the two operands) is defined by an operator.

May 8, 2024 · Adding two numbers using an arrow function in JavaScript involves creating a concise function syntax that adds parameters and returns the sum. Syntax: let addition = (a, b) => a + b;

Mar 13, 2025 · The addition assignment (+=) operator performs addition (which is either numeric addition or string concatenation) on the two operands and assigns the result to the left operand.

Jul 6, 2024 · To add two variable values, follow these simple steps: Step 1: Declare and initialize two variables with the desired values. Step 2: Use the addition operator “+” to add the variables together. Step 3: Assign the result to a new variable or use it directly in your code. Here’s an example that demonstrates the addition of two variables:

Aug 10, 2022 · There are numerous ways to add two variables. But for the sake of simplicity, we will make use of addition operator ( + ) which helps in concatenating two or more strings. In the following example, we have two global variables that are holding a string value.

var get_val = +$(this).val(); or. var get_val = Number($(this).val()); or if you want integer. var get_val = parseInt($(this).val()); otherwise . var get_val = parseFloat($(this).val());