Find Interview Questions for Vmock

<fo:wrapper>
<!--
Contents:(#PCDATA|bidi-override|
character|external-graphic|
instream-foreign-object|inline|
inline-container|leader|page-number|
page-number-citation|basic-link|
multi-toggle|block|block-container|
table-and-caption|table|list-block)*
-->
</fo:wrapper>

<form> - tag is used for sending data from the client
browser to the server.
There is no way for submitting a page if there is no
<form> - tag in the page.

form is usefully for posting the data from one page to another
.and this done by tow way either submitting the form by
submit button or through javascript function.

<img src="d:xyz.jpg" name="img1"
onmouseover="img1.width='400';img1.height='400'"
onmouseout="img1.width='100';img1.height='100';" />

in santosh answer where is javascript ?????

JSX or JavaScript XML is used in React to include XML/HTML code in JavaScript code. Later, transpilers like babel can transform these code into proper javaScript code. We can use React without JSX but JSX makes it more elegant.

It is not a good practice to use the index of an item as the ‘key’ of the list elements. For example, if the order of the items changes, it will impact negatively and may cause issues with the react component state.

React’s appeasement algorithm assumes that without any information to the contrary, if a custom component appears in the same place on consequent renders, it’s the same component as before, so reuses the previous instance moderately than making a new one.

Manipulating the real DOM makes one web application slow. React creates one virtual DOM for each real DOM object. The virtual DOM has the same properties as the real DOM and we can manipulate it faster than a real DOM. In react, all operations are performed on the virtual DOM object.