Home » Search results for 'javascript object'

Concatenating (Joining) Strings in JavaScript [3 Methods]

javascript string concatenation

Being able to concatenate (join) two or more strings together is pretty useful – you may be combining user input for storage in a single database column or doing the reverse – combining data from multiple database columns into a single string for display or output. There are several ways to concatenate strings in Javascript, and we’ll cover these methods below, along with some useful examples. The string.concat() Method The string.concat() method will join any number of strings to a given initial string. Syntax string.concat(string1, string2, string3…) Note that: string is … Read more

Home » Search results for 'javascript object'

Javascript String includes() Method – Check if a String Contains Another String

Javascript String includes

Here’s a guide on checking whether a string contains another string in the JavaScript programming language using the includes() method. includes() Syntax string.includes(search, start) Note that: string should be a string value or variable search should be the string you are checking for start is the index (position) you want to start searching at. It’s optional Indexes start counting at 0 – The first character of the string is at index 0 returns bool Examples var string = “Linux all over the world”; var result = string.includes(“over”); // Will … Read more

Home » Search results for 'javascript object'

Array slice() Method in JavaScript, with Examples

Array slice in JavaScript

We have covered removing items from arrays in JavaScript, as well as checking whether an item is present in an array. This article will look at copying or returning a subsection of arrays using the slice() method in Javascript. slice() Syntax arr.slice([start[, end]]) Where: arr is an array or existing array variable start is the index to start the slice at If it is undefined, it will default to 0 The index is the position of the item within the array. Remember, they start at 0! end is the index to end the slice at If it … Read more

Home » Search results for 'javascript object'

Using JavaScript ‘toLowerCase()’ String Method [with Examples]

JavaScript toLowerCase

Want to make a string all lower case in JavaScript? It’s the toLowerCase() method to the rescue! The toLowerCase() method is part of the string object and has full support in all browsers. In JavaScript, strings can either be a primitive or an object – primitives are the most basic kinds of variables, which are not objects, have no methods, and simply represent the given characters. However, String objects have useful methods for manipulating and measuring the string – like toLowerCase(). By default, JavaScript’s string variables are initialized as primitives – but will be automatically … Read more

Home » Search results for 'javascript object'

Measuring the Length of a String in JavaScript, with Examples

Measuring the Length of a String in JavaScript, with Examples

In this guide, we explain how to measure the length of a string in JavaScript using the length method. JavaScript is a flexible programming language that runs just about everywhere. You can run JavaScript apps in web browsers, build command-line apps you can run in the terminal, mobile apps can be built using platforms like Cordova, and server processes can be written on platforms like Node.js. Naturally, Linux is the environment of choice for many JavaScript developers and is perfect for learning tools like Node.js … Read more

Home » Search results for 'javascript object'

Check Array Contains a Value in JavaScript, with Examples

Determining Whether an Array Contains a Value

This tutorial will show you how to check whether an array contains a specific value in Javascript, with full examples. JavaScript is a flexible programming language that runs just about everywhere. You can run JavaScript apps in web browsers, build command-line apps you can run in the terminal, mobile apps can be built using platforms like Cordova, and server processes can be written on platforms like Node.js. Naturally, Linux is the environment of choice for many JavaScript developers and is perfect for learning tools like … Read more

Home » Search results for 'javascript object'

What is a Python Dictionary? Explanation and Code Examples

Python dictionary

Here’s everything you need to know about the Dictionary data type in Python, what it can store, and how to use it. Python has several built-in data types for storing data (more than other languages like JavaScript) – from basic types like integers, floating-point numbers, and strings to more complex types like lists, tuples, and dictionaries. What is a Type? A variable’s type defines what kind of value it can store and what can be done with it. What is a Dictionary? A dictionary is a variable type … Read more

Home » Search results for 'javascript object'

How to Sort a Dictionary by Value in Python [Examples]

Python sort dictionary by value

This article will show you how to sort a dictionary by the values it contains in the Python programming language. Code examples are included. What is a Dictionary? A dictionary is one of Pythons built in variable types for storing data. Dictionaries are similar to associative arrays or hash tables in other languages. A dictionary contains a collection of values or objects. Unlike lists and arrays, rather than their values being stored at a specific index (the ordered position in the sequence of stored values), values in a dictionary … Read more

Home » Search results for 'javascript object'

How to Iterate/Loop over a Dictionary in Python [Examples]

Python iterate loop dictionary

This article will show you how to iterate/loop over the keys and values in a Python dictionary, and provide code examples. What is a Python Dictionary? In Python, a dictionary is a data type that contains a collection of objects – but unlike a list or array, rather than their values being recorded at a specific index (or ordered position in the sequence of stored values), they are stored in a key – a string identifier which both tells you what a value is for, and which … Read more

Home » Search results for 'javascript object'

How to Generate & Write CSV Files in Python, With Examples

Python write csv file

This article will show you how to generate CSV (Comma Separated Values) data, and write it to a file, with examples. What is CSV (Comma Separated Values) CSV (Comma Separated Values) is a format for storing and transmitting data, usually in a text file, in which the individual values are separated by a comma (,). Each row in a CSV file represents an individual record containing multiple comma separated values. A CSV file looks like this: name,age,favourite colour Fred,54,green Mary,31,pink Steve,12,orange Above, the CSV describes three people, with … Read more