0 comments / February 21, 2023

In javascript, What is the difference between let and var?

In JavaScript, "let" and "var" are both used for declaring variables, but they have some differences in how they work and how they can be used.

0 comments / February 14, 2023

What is lexical scope in javascript?

In JavaScript, lexical scope means that a variable defined outside a function can be accessed by another function defined after the variable declaration. On the other hand, variables defined inside a function are not accessible outside of it.

0 comments / October 04, 2017

How to get current url in javascript

Javascript provides multiple methods to get current url which is displayed in the browser address bar and all these methods relies on window.location.

0 comments / July 17, 2016

Get string between parentheses or brackets

We can easily get the string between parentheses or brackets using regular expression. This regular expression can be applied in any programming language / scripts like php, javascript,java,perl,python,c#,asp etc.

0 comments / July 15, 2016

Call function from string in javascript without eval

Lets say, we grabed a function call from somewhere and have it in a variable, Simply match the function name and parameters separately using regular expression and call the function using window object.

0 comments / June 29, 2015

Regex check minimum and maximum length

Using Regular expression( Regex ), We can check whether the given string has minimum no. of characters or whether it is inside specified range etc.

0 comments / June 22, 2015

Replace string in javascript

Generally, "replace" method in java script replaces only the first occurrence in the given string. We can change this behaviour by using regular expression.