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javascript Programming Glossary: statementExplain JavaScript's encapsulated anonymous function syntax http://stackoverflow.com/questions/1634268/explain-javascripts-encapsulated-anonymous-function-syntax a SyntaxError since a Block such those can only contain statements and the ECMAScript Specification doesn't define any function.. the ECMAScript Specification doesn't define any function statement but most implementations are tolerant and will simply take the..
Change an element's CSS class with JavaScript http://stackoverflow.com/questions/195951/change-an-elements-css-class-with-javascript S g '' code wrapped for readability above is all one statement An explanation of this regex is as follows ^ s # match the start..
How can I override the OnBeforeUnload dialog and replace it with my own? http://stackoverflow.com/questions/276660/how-can-i-override-the-onbeforeunload-dialog-and-replace-it-with-my-own and retain the string that was assigned to it. The default statement that appears in the dialog box Are you sure you want to navigate..
What are the rules for Javascript's automatic semicolon insertion (ASI)? http://stackoverflow.com/questions/2846283/what-are-the-rules-for-javascripts-automatic-semicolon-insertion-asi improve this question First of all you should know which statements are affected by the automatic semicolon insertion also known.. semicolon insertion also known as ASI for brevity empty statement var statement expression statement do while statement continue.. also known as ASI for brevity empty statement var statement expression statement do while statement continue statement break..
Loop through array in JavaScript http://stackoverflow.com/questions/3010840/loop-through-array-in-javascript Do something @zipcodeman suggests the use of the for...in statement but for iterating arrays for in should be avoided that statement.. but for iterating arrays for in should be avoided that statement is meant to enumerate object properties. It shouldn't be used.. augmention such as MooTools for example . The for in statement as I said before is there to enumerate object properties for..
Does it matter which equals operator (== vs ===) I use in JavaScript comparisons? http://stackoverflow.com/questions/359494/does-it-matter-which-equals-operator-vs-i-use-in-javascript-comparisons comparing idSele_UNVEHtype.value.length 0 inside of an if statement. Is there a performance benefit to replacing with Any performance..
What does the exclamation mark do before the function? http://stackoverflow.com/questions/3755606/what-does-the-exclamation-mark-do-before-the-function function foo Note that there's no semicolon this is a statement you need a separate invocation of foo to actually run the function...
Why don't self-closing script tags work? http://stackoverflow.com/questions/69913/why-dont-self-closing-script-tags-work Does this break the concept of XHTML support Note This statement is correct at least for all IE 6 8 beta 2 . javascript html.. p p and not p . XHTML DTD specifies script tags as script statements which may include CDATA sections ELEMENT script #PCDATA Hope..
Why is setTimeout(fn, 0) sometimes useful? http://stackoverflow.com/questions/779379/why-is-settimeoutfn-0-sometimes-useful would end up being selected. However if I stuck an alert statement in at the right time the correct option would be selected. Thinking..
What is JavaScript garbage collection? http://stackoverflow.com/questions/864516/what-is-javascript-garbage-collection on the matter. Two important ones from there Use delete statements. Whenever you create an object using a new statement pair it.. statements. Whenever you create an object using a new statement pair it with a delete statement. This ensures that all of the.. an object using a new statement pair it with a delete statement. This ensures that all of the memory associated with the object..
Explain JavaScript's encapsulated anonymous function syntax http://stackoverflow.com/questions/1634268/explain-javascripts-encapsulated-anonymous-function-syntax behavior. Their grammar contains a non standard Function Statement meaning that the function will be evaluated at run time not..
When do I need to specify the JavaScript protocol? http://stackoverflow.com/questions/2321469/when-do-i-need-to-specify-the-javascript-protocol the JavaScript engine will interpret javascript as a Label Statement . A label simply provides an identifier to a statement and lets..
object name same a function name? http://stackoverflow.com/questions/3663775/object-name-same-a-function-name it. The Mozilla implementations define a Function Statement Since Firebug evaluates code by wrapping inside a with statement.. to be evaluated in statement context a Mozilla's Function Statement . To show the behavior of the Function statement on Mozilla.. because the function definition was made at run time in Statement context in side the true branch of the if while in other implementations..
Why can't I use a Javascript function before it's definition inside a try block? http://stackoverflow.com/questions/4069100/why-cant-i-use-a-javascript-function-before-its-definition-inside-a-try-block is non standard because of The production SourceElement Statement is processed for function declarations by taking no action ... by taking no action . The production SourceElement Statement is evaluated as follows Evaluate Statement. Return Result 1.. SourceElement Statement is evaluated as follows Evaluate Statement. Return Result 1 . Both FunctionDeclaration and Statement are..
May function declarations appear inside statements in JavaScript? http://stackoverflow.com/questions/4071292/may-function-declarations-appear-inside-statements-in-javascript Update My question can also be phrased like so Can the Statement production contain the FunctionDeclaration production Conclusion.. ECMA 262 5th Edition specification Blocks can only contain Statements Section 12.1 Block StatementList opt StatementList Statement.. Blocks can only contain Statements Section 12.1 Block StatementList opt StatementList Statement StatementList Statement However..
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