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Need a clear justification of advantages and disadvantages of javascript and Ajax and also the Differences between them?
Javascript is basically a client side scripting language which is mostly used for more interactive websites, client side validation etc. Ajax is basically asynchronous javascript and XML. So it used javascript but there is a lot more to it. XMLHttpRequest object is used to interact with the server to get the real time data without refreshing the page. There are other alternatives to XMLHttpRequest object like iframe, XMLDocument object but they are not as robust as this one. So XMLHttpRequest object is activated through regular javascript actions and the request is sent to the server. Once the response is recieved, it is thrown back to the browser and diplayed in some previously unfilled variables.
What else can I help you with?
What are disadvantages of javascript?
In short: disabling JavaScript (and similar coding) in your browser will break the internet. A good section of the web uses JavaScript, either to enhance the experience of its users or to manage security (for instance, session control.) Some sites will have been built in a manner that "degrades gracefully" while others that rely on JavaScript simply won't function.
Advantages and disadvantages of java script?
Advantages include Cross-browser support, validating data on the client, and being able to create more sophisticated user interfaces.JavaScript effects are also much faster to download than some other front-end technologies like Flash and Java applets. In fact, unless you're writing a massive JavaScript application, it's quite likely that no significant extra download time will be added to a page by using JavaScript on it. Nor do users need to download a plugin before they can view your JavaScript, as they would with Flash for example, they simply need a browser that supports it - and, of course, most modern browsers do. Other advantages include the fact that you don't need any extra tools to write JavaScript, any plain text or HTML editor will do, so there's no expensive development software to buy. It's also an easy language to learn, and there's a thriving and supportive online community of JavaScript developers and information resources. The disadvantages of JavaScript, as with most web development, are almost entirely related to browser compatibility. While the advances in browser programmability we've seen over recent years are, generally speaking, a good thing, if you don't implement them with care you can create a lot of inconsistencies and broken pages quite unintentionally using JavaScript. Code that works just great on IE4 might not work at all on Netscape 4, what works in NN6 doesn't always work in NN 4, and so on. In essence, there are two main problems with JavaScript and browsers: · The different JavaScript versions in different browsers. · Browser programmability: the HTML elements and features of the browser that can be accessed through any scripting language. (IE4 , for example, makes most of the page and HTML accessible to scripts, but Navigator 4 limits what can be accessed and manipulated.) it allow Developer to add Dynamic content like image swapping , Rollover, which is not available in HTML or CSS CSS basically used for ----> styling ur pages JavaScript used to allow ----> script access to objects embedded in other application.
What is a javascript tutorial?
A JavaScript tutorial contains instructions that will teach you how to code in JavaScript.
What languages can a browser understand?
HTML, CSS, & JavaScript.
Advantages of Java script to HTML?
There are no real advantages to JavaSript to HTML but rather JavaScript enhances HTML by making it dynamic. HTML as we know is static and therefore once an HTML document has been created it cannot be changed. JavaScript has two basic functionalities which are: 1. To build HTML dynamically as the web page is loaded and; 2. To monitor as well as react to User events.
What are the disadvantages of disabling JavaScript in your browser?
The disadvantage of disabling JavaScript is that when you access a website that uses JavaScript (which a lot of websites do) they may not look or work properly or may ask you to enable it.
What is differences between JavaScript and livescript?
JavaScript is LiveScript. It was renamed to gain popularity. The JavaScript name was rejected by then Sun Microsystems who owned the Java trademark. Now the official name is ECMAScript, while it is still commonly referred to as JavaScript. In Internet Explorer it is called JScript. Different names, same language.
What are the advantages of JavaScript?
The obvious advantages to JavaScript (as far as i dont know what you want it compared to, and i could probably write a longer article about it) would be how it works natively and pretty well in all major web-browsers today. Instead of relying on a visitor to your web-page to run some sort of plugin. Another huge advantage to javascript over any high-level compiled programming language is that it is easy to learn and use, in addition to being quite powerful as of todays javascript engines.
What are disadvantages of javascript?
In short: disabling JavaScript (and similar coding) in your browser will break the internet. A good section of the web uses JavaScript, either to enhance the experience of its users or to manage security (for instance, session control.) Some sites will have been built in a manner that "degrades gracefully" while others that rely on JavaScript simply won't function.
Advantages and disadvantages of java script?
Advantages include Cross-browser support, validating data on the client, and being able to create more sophisticated user interfaces.JavaScript effects are also much faster to download than some other front-end technologies like Flash and Java applets. In fact, unless you're writing a massive JavaScript application, it's quite likely that no significant extra download time will be added to a page by using JavaScript on it. Nor do users need to download a plugin before they can view your JavaScript, as they would with Flash for example, they simply need a browser that supports it - and, of course, most modern browsers do. Other advantages include the fact that you don't need any extra tools to write JavaScript, any plain text or HTML editor will do, so there's no expensive development software to buy. It's also an easy language to learn, and there's a thriving and supportive online community of JavaScript developers and information resources. The disadvantages of JavaScript, as with most web development, are almost entirely related to browser compatibility. While the advances in browser programmability we've seen over recent years are, generally speaking, a good thing, if you don't implement them with care you can create a lot of inconsistencies and broken pages quite unintentionally using JavaScript. Code that works just great on IE4 might not work at all on Netscape 4, what works in NN6 doesn't always work in NN 4, and so on. In essence, there are two main problems with JavaScript and browsers: · The different JavaScript versions in different browsers. · Browser programmability: the HTML elements and features of the browser that can be accessed through any scripting language. (IE4 , for example, makes most of the page and HTML accessible to scripts, but Navigator 4 limits what can be accessed and manipulated.) it allow Developer to add Dynamic content like image swapping , Rollover, which is not available in HTML or CSS CSS basically used for ----> styling ur pages JavaScript used to allow ----> script access to objects embedded in other application.
What is a javascript tutorial?
A JavaScript tutorial contains instructions that will teach you how to code in JavaScript.
What languages can a browser understand?
HTML, CSS, & JavaScript.
Advantages of Java script to HTML?
There are no real advantages to JavaSript to HTML but rather JavaScript enhances HTML by making it dynamic. HTML as we know is static and therefore once an HTML document has been created it cannot be changed. JavaScript has two basic functionalities which are: 1. To build HTML dynamically as the web page is loaded and; 2. To monitor as well as react to User events.
What are built-in javascript classes?
Javascript does not have classes
How old is Javascript?
Javascript was created in 1995.
How do you sort in javascript?
Javascript can help in browseing
Do you need java compiler to execute HTML programs written in javascript?
No, Java and JavaScript are nothing to do with each other, JavaScript is a form of EMCAScript, not Java. Every modern browser comes with a JavaScript engine that is used to understand JavaScript. so there is no need for it, no.
