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Vineeth.mariserla has Published 116 Articles

vineeth.mariserla
1K+ Views
The map is basically a collection of elements where each element is stored as a Key, value pair. It can hold both objects and primitive values as either a key or a value. When we iterate over the map object it returns the key, value pair in the same order as inserted. The ... Read More

vineeth.mariserla
405 Views
In javascript, we can split a string in 3 ways. One is an old way in which string.split() method is used and later on, ES6 has provided 2 more ways to split a string. In the first way spread operator is used and in the second way array.from() method is used. Let's ... Read More

vineeth.mariserla
230 Views
Swapping variables has become very easy with destructuring. In contemporary javascript swapping takes place by using another variable. It may not be hectic but it is lengthy. But in modern javascript there is no need for the third variable. Let's discuss it in detail.Example-1In the following example, swapping has done using another variable ... Read More

vineeth.mariserla
181 Views
We can attach two strings using the concat() method. But if we need to attach a specific string at the starting of the first string then the easiest way is string.padStart(). This method not only adds the second string at the start of the first string but also looks after the ... Read More

vineeth.mariserla
2K+ Views
Yes, it is possible to change the content of the HTML in javascript. Usually HTML content will be in HTML tags such as , , etc. In javascript, we have DOM methods that have an ability to access the HTML tags. Those methods, such as document.getElementById(), document.getElementByTagName(), etc., make use ... Read More

vineeth.mariserla
2K+ Views
The length property is only applicable to arrays and strings. So when we call the length property on an object we will get undefined.ExampleLive Demo var object = {prop:1, prop:2}; document.write(object.length); OutputundefinedWhereas arrays and strings will display their length when length property is used on them.ExampleLive Demo var ... Read More

vineeth.mariserla
310 Views
We can define a property of an object using Dot and Bracket notations. There is also another way in which a property called Object.defineProperty() is used to define a property. It usually takes 3 parameters they are object name, property name, property descriptor.syntaxObject.defineProperty(object name, property name, property descriptor)Lets' define a property with this ... Read More

vineeth.mariserla
327 Views
Re-declaring a variable will not destroy the value of a variable, until and unless it is assigned with some other new value.If we look at the following example variables "x" and ''y'' were assigned with values 4 and 8 respectively, later on when those variables were reassigned, the old values were replaced ... Read More

vineeth.mariserla
6K+ Views
To convert a string in to function "eval()" method should be used. This method takes a string as a parameter and converts it into a function.syntaxeval(string);ExampleIn the following example, in a string itself, a property called 'age' is assigned with a function. Later on, using eval() function the property age is converted into ... Read More

vineeth.mariserla
383 Views
To delete a property of an object, delete key word should be used. Delete key word can be used with both the methods such as Dot method and Bracket method.syntaxdelete object.property;ExampleIn the following example initially when the property "country" is executed its value "England" is displayed in the output. But when that ... Read More