Define closure ?
Define closure.
In JavaScript, we need closures when a variable which is defined outside the scope in reference is accessed from some inner scope.- var num = 10;
- function sum()
- {
- document.writeln(num+num);
- }
- sum();
Can we use DIV inside span?
HTML is all about applying meaning to content. Whereas most HTML tags apply meaning ( p makes a paragraph, h1 makes a heading etc.), the span and div tags apply no meaning at all. This might sound about as useful as a foam hammer but they are actually used quite extensively in conjunction with CSS. They are used to group together a chunk of HTML and hook some information onto that chunk, most commonly with the attributes class and id to associate the element with a class or id CSS selector . The difference between span and div is that a span element is in-line and usually used for a small chunk of HTML inside a line (such as inside a paragraph) whereas a div (division) element is block-line (which is basically equivalent to having a line-break before and after it) and used to group larger chunks of code. < div id = " scissors " > ...
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