12/11/2010
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This free HTML JavaScript tutorial provides some basic JavaScript concepts for programming newbies. In this post, you will train some categories of JavaScript statements, JavaScript blocks and Group of JavaScript statements, some tips on declaring a JavaScript Statement.
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x = x + 1; y = 20; z = x+y;
As the semicolon is optional, we can represent above statements separated with a line-break.
x = x + 1
y = 20
z = x+y
Categories of JavaScript Statements
Depending on the task a statement perform, they are categories as:
- Conditional Statements
- Loop Statements
- Object Manipulation Statements
- Comment Statements
- Exception Handling Statements
JavaScript Blocks - Group of JavaScript Statements
JavaScript statements can be grouped together in blocks. Curly braces ({ }) are used to group a list of statements together in blocks. JavaScript block helps to execute sequence of statements together to perform a specific task. JavaScript block are the integral part of the function and conditional loops.
<script type="text/javascript">
for (x=0; x < 10; x++)
{
document.write("x="+ x +"<br>");
}
</script>
Some Tips on declaring a JavaScript Statement
- JavaScript programs are written using the Unicode character set.
- JavaScript is a case-sensitive language so take care while defining and using variables, function names.
- Do not use reserved keywords as variables, function names.
- JavaScript ignores spaces, tabs, and newlines that appear between tokens in programs so indent your programs as per your consistency.
- Omitting semicolons is not a good programming practice; you should get in the habit of using them.
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12/11/2010
This free HTML JavaScript tutorial provides some basic JavaScript concepts for pro...Training Lexical Structure and Statements - Training Lexical Structure and Statements
