Javascript – Fluent-Themes http://fluentthemes.com Web Design Blog and Premium WordPress Themes Fri, 28 Apr 2017 17:42:48 +0000 en-US hourly 1 https://wordpress.org/?v=4.8 How to Use Compare Strings in Java http://fluentthemes.com/use-compare-strings-java/ Sat, 03 Dec 2016 17:38:18 +0000 http://fluentthemes.com/?p=620 In Java, it’s way better to use each operator when testing the specific attribute it’s designed for. But in almost all cases, Objects.equals () is a more universal operator thus experience web developers opt for it.

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Sometimes when comparing strings in Java it is possible to run into a bug forcing you to refresh the process. It all depends on what kind of program you are using, and below we explain the best option for comparing strings.

Ways to compare strings

Generally, there are three ways to test strings in Java. You can use ==, .equals (), or Objects.equals ().

How are they different? == tests for the reference quality in strings meaning finding out whether the two objects are the same. On the other hand, .equals () tests whether the two strings are of equal value logically. Finally, Objects.equals () tests for any nulls in the two strings then determine whether to call .equals ().

Ideal operator to use

Well this has been subject to lots of debates because each of the three operators have their unique set of strengths and weaknesses. Example, == is often a preferred option when comparing object reference, but there are cases where it may seem to compare string values as well.

However, what you get is a falls value because Java creates an illusion that you are comparing values but in the real sense you are not. Consider the two cases below:

#Case 1:
String a="Test";
String b="Test";
if(a==b) ===> true

#Case 2:
String nullString1 = null;
String nullString2 = null;
//evaluates to true
nullString1 == nullString2;
//throws an exception
nullString1.equals(nullString2);

So, it’s way better to use each operator when testing the specific attribute it’s designed for. But in almost all cases, Objects.equals () is a more universal operator thus experience web developers opt for it.

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What is JavaScript http://fluentthemes.com/what-is-javascript/ Fri, 02 Dec 2016 18:29:33 +0000 http://fluentthemes.com/?p=613 A script is basically a program that boosts interaction within a website be it launching pop-up menus or responding to every action a web visitor makes like checking out items on an online store. Initially, there were two kinds of scripts available, Java and VB, but most modern websites now run the popular JavaScript.

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Every website on the World Wide Web does, in one way or another, rely on JavaScript. But what is a script in the coding world and what does it mean to a web developer?

A script is basically a program that boosts interaction within a website be it launching pop-up menus or responding to every action a web visitor makes like checking out items on an online store. Initially, there were two kinds of scripts available, Java and VB, but most modern websites now run the popular JavaScript.

Ways to use JavaScript

There are only two distinct ways in which this script can be used; either as an external or internal script. An external script means the web developer stores the script language in a separate file then the HTML pages will access this file whenever required. On the other hand, an internal script means the web developer prefers to store the script files within the HTML document itself.

When to use internal and external JavaScript

External JavaScript is ideal where a created functionality is going to be accessed by multiple HTML documents at any given time. The web developer will thus keep the script in a separate file that will be used within the HTML documents. In code, this is normally introduced as extension .js within a <script> tag.

java-one

Then we have the internal JavaScript where the web developer decides to include the script as they develop the HTML documents in code. Normally the script is introduced as a header with <script> tag but there is no limit to the number of locations the script can be introduced within in a document. The code below explains it;

java-two

When not to use JavaScript

As explained before, JavaScript runs on almost every browser or website. However, there are still those sites or browsers that run on different scripts thus don’t recognize Java. This will register as an error, when the web user tries to open a page or use the search engine, to the end user in the form of an incomprehensible code.

To prevent this from happening, the web developer thus introduces HTML comments around the script to hide it from older browsers or HTML pages.

java-three

That is JavaScript in a nutshell, a programming language that helps web developers introduces interactivity in websites. JavaScript can be internal or external and how these two options are used solely depends on the web developer.

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