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Yes, you can use a JavaScript variable before it is declared, with a technique called hoisting. The parser reads through the complete function before running it. The behavior in which a variable appears to be used before it's declared is known as hoisting. For example, the following, rank = 5; var rank; The above works the same as the following − var rank; rank = 2; Hoisting in JavaScript, allows us to declare variables, functions, or classes that are moved to the top of the scope preceding the execution of the code regardless of whether their scope ... Read More
In JavaScript, the regular expression [^0-9] is used to find the characters inside the bracket but not a digit. Except digit mentioned in the bracket, it will return the remaining characters from the text as an array. We all know about RegExp (Regular Expression) in JavaScript. RegExp is an object that specifies the pattern used to do a search and replace operations on the string or for input validation. RegExp was introduced in ES1 and it is fully supported by all browsers. Syntax Syntax for non-digit or /[^0-9]/ character is- new RegExp("[^0-9]") or simply /[^0-9]/ Here /[^0-9]/ , ... Read More
Today's interconnected, fast−paced commercial environment demands fierce competition from modern organizations. Because every competitive advantage counts in this environment, business professionals are constantly researching novel management methods. But the ideal solution might not come from a novel approach. Combining the tried−and−true Lean method with the Six Sigma approach may be the key to success as businesses optimize their processes for maximum efficiency and strive to uphold high−quality standards. What is Lean Six Sigma? Lean Six Sigma is a team−oriented management technique aiming to increase performance by removing waste and resource faults. It blends Six Sigma methodology and tools with the ... Read More
Toyota's manufacturing division developed the lean approach, but it soon became apparent that project managers could use lean concepts to decrease waste and inefficiency in any business. From healthcare to software development, lean concepts reduce costs while maintaining a competitive advantage. For many American businesses, being lean is the only way to compete globally against competitors from nations with substantially cheaper manufacturing costs. Lean has shown to be an efficient approach to managing teams in some of the most demanding sectors, including software development, manufacturing, and construction. The fact that the technique is simple to comprehend and quick to make ... Read More
We can't say whether both are the same or both are different. In some cases, addition and concatenation will have the same result, but in some cases, they will be different. It is completely based on the type of variables. We will see it in detail below We use the + operator for addition and the concat() method for concatenation in JavaScript. In some cases, both the + operator and the concat() method returns the same result. Adding and concatenating two strings using the + operator and the concat() method returns the same result. We can also apply the ... Read More
In this article we are going to discuss how to convert a value to a number in JavaScript. JavaScript has introduced Number(), parseInt(), parseFloat() methods to convert a value into a number and also we can achieve it by using (+) unary operator. These mentioned methods can convert number strings to numbers and Boolean values to 1's or 0's. Let’s us discuss these above mentioned methods briefly. We’ll discuss the 4 possible ways to convert a value to a number with an example each. Number() parseInt() parseFloat() Unary Opertaor(+) Example 1 The following is an example program to ... Read More
In this article we are going to discuss how find the cube root of a number with the help of suitable examples in JavaScript. Using Math object in JavaScript any kind of operation can be done. Math.cbrt(), Math.pow() are the methods especially used to find the cube root of a number and also we can achieve it by using ** operator. It takes a number as a parameter and returns its cube root. To find the cube root of a number in JavaScript, there are three possible ways. The way to do it is by using cbrt() method, second way ... Read More
In the following example we are going to learn how to set dynamic property keys to an object in JavaScript. To add dynamic property keys to an object in JavaScript, there are three possible ways. There are three possible ways to set dynamic property keys to an object. The first possible way is to create a key and assign it to the object, second possible way is to set the dynamic property keys to an object using the define property method and the third possible way is to set the dynamic property keys to an object using ES6 method. We ... Read More
In this article we are going to discuss how to access an object value using variable key in JavaScript. An object value can be accessed by a Dot Notation and a Bracket Notation. To get the object value through a variable key, the value or expression inside the bracket notation must match with the existing key name, then it returns a value. The bracket notation, unlike the dot notation can be used with variables. If we are using a variable with bracket notation, the variable must reference a string. Let’s understand this concept better with the help of examples further ... Read More
In this article we are going to discuss how to convert a value into Boolean in JavaScript. In JavaScript programming we sometimes need values like these ‘YES / NO, ‘ON / OFF’, ‘TRUE / FALSE’. So, JavaScript provides Boolean() method, which helps us to convert a value into Boolean. A Boolean is a value that can return either true/false. There are two ways using which we can convert values into Boolean. One way is to use Boolean() method and the other way is to use the !! notation. Let’s understand this concept better with the help of the examples further ... Read More