By default all variables in JavaScript are global, meaning they retain their values everywhere in a scripted web page. To make a variable local to a block (such... Read more »
There are two types of quote mark in JavaScript, the single-quote (’) and double-quote (”). Either can be used to delimit a string literal, or sequence... Read more »
The most reliable way is to use straight HTML via a Submit style button. Set the ACTION of the to a mailto: URL and the ENCTYPE attribute to “text/plain”.... Read more »
At best, a client-side script can show the visitor how many she has been to the site (storing the count in a local cookie). A count of total hits to the server requires... Read more »
ECMAScript is yet another name for JavaScript (other names include LiveScript). The current JavaScript that you see supported in browsers is ECMAScript revision... Read more »
Number, String, Boolean, Function, Object, Null, Undefined. Read more »
Use the parseInt() function, that takes a string as the first parameter, and the base as a second parameter. So to convert hexadecimal 3F to decimal, use parseInt... Read more »
It?s a number in JavaScript, derived by dividing negative number by zero Read more »
Since 1 is a string, everything is a string, so the result is 124. Read more »
Since 2 and 5 are integers, this is number arithmetic, since 8 is a string, it?s concatenation, so 78 is the result. Read more »
The following example illustrates this It creates a function called square with argument x and returns x multiplied by itself. var square = new Function (”x”,”return... Read more »
Continue statement continues the current loop (if label not specified) in a new iteration whereas break statement exits the current loop. Read more »
The delete operator is used to delete all the variables and objects used in the program ,but it does not delete variables declared with var keyword. Read more »
==== is strict equality operator ,it returns true only when the two operands are having the same value without any type conversion. Read more »