Essential Javascript -- A Javascript Tutorial
By Patrick Hunlock2007-12-02
JavaScript Loops: WHILE
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while loops in Javascript also follow basic C syntax and are easy to understand and use.
The while loop will continue to execute until its test condition evaluates to false or the loop encounters a break statement.
var x = 1;
while (x<5) {
x = x +1;
}
var x = 1;
while (true) {
x = x + 1;
if (x>=5) {
break;
}
}
Sometimes it makes more sense to evaluate the test condition at the end of the loop instead of the beginning. So for this Javascript supports a do/while structure.
var x=1;
do {
x = x + 1;
} while (x < 5);
Tutorial Pages:
» Essential Javascript -- A Javascript Tutorial
» Getting Started
» In-Line Javascript
» External Javascript
» Javascript is case sensitive
» Output (writeln)
» Output (alert)
» Output (getElementById)
» Input (One Click To Rule Them All)
» Input (User Input)
» Javascript is an Event Driven Language
» Comments
» Variables
» Variable Scope
» Special Keywords
» Arithmetic Operators
» Logical and Comparison Operators
» JavaScript Conditionals: IF
» JavaScript Conditionals: SWITCH
» JavaScript Conditionals: Shorthand Assignment
» JavaScript Conditionals: Ternary Operators
» JavaScript Loops: FOR
» JavaScript Loops: FOR/IN
» JavaScript Loops: WHILE
» Bringing It All Together
» DHTML: Dynamic HTML
» Conclusion
copyright © 2006, 2007 by Patrick Hunlock
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