missing ] after element list

[zephyr]

I get this error
"missing ] after element list"
on the line containing the var t=setTimeout("...

args={
parentEl:args.parentEl,
currWidth: currWidth,
timeout: args.timeout,
orgWidth:args.orgWidth,
callback:args.callback,
timeStep:timeStep
};
var t=setTimeout("createTimeBar("+args+")",refresh);

I need to call this function "createTimeBar()" with the argument args
but the string concatenation (+) cripples the object argument. I don't
know of any other way to use settimeout with a object argument...

Whats the fix here?

Marc

 

[Scott Sauyet]

var t=setTimeout("createTimeBar("+args+")",refresh);

I need to call this function "createTimeBar()" with the argument args
but the string concatenation (+) cripples the object argument. I don't
know of any other way to use settimeout with a object argument...

var t = setTimeout(function() {createTimeBar(args);}, refresh);

setTimeout does not have to take a String. And it's a very rare case
where doing so makes real sense. Instead, just pass in a function.

Cheers,

-- Scott

 

[Gregor Kofler]

Am 2011-04-06 23:28, zephyr meinte:

I get this error
"missing ] after element list"
on the line containing the var t=setTimeout("...

args={ ^^^^

parentEl:args.parentEl,

^^^^
currWidth: currWidth,
timeout: args.timeout,
orgWidth:args.orgWidth,
callback:args.callback,
timeStep:timeStep
};

I doubt that the above is intended. (And make it var args = ...)

var t=setTimeout("createTimeBar("+args+")",refresh);

I need to call this function "createTimeBar()" with the argument args
but the string concatenation (+) cripples the object argument.

It doesn't cripple it; it's the object's toString() method which is
called upon string concatenation: args.toString() gives [object Object]

I don't
know of any other way to use settimeout with a object argument...

What's wrong with

var t=setTimeout(createTimeBar(args),refresh);

(Support for functions instead of code to evaluate is supported since
JS1.2/MSHTML DOM 5.0...)


Gregor

 

[Thomas 'PointedEars' Lahn]

zephyr meinte:

var t=setTimeout("createTimeBar("+args+")",refresh);

I need to call this function "createTimeBar()" with the argument args
but the string concatenation (+) cripples the object argument.

It doesn't cripple it; it's the object's toString() method which is
called upon string concatenation: args.toString() gives [object Object]

I don't know of any other way to use settimeout with a object argument...

What's wrong with

var t=setTimeout(createTimeBar(args),refresh);

It is not equivalent, as it will call createTimeBar(args) when setTimeout()
is called, not `refresh' milliseconds after setTimeout() returned. Most
certainly you mean instead:

var t = window.setTimeout(function() { createTimeBar(args); }, refresh);

Assuming that this is not part of a loop with changing `args', in which case
another closure would be required.

(Support for functions instead of code to evaluate is supported since
JS1.2/MSHTML DOM 5.0...)

But createTimeBar() does not return (a reference to) one, so …


PointedEars

 

[Gregor Kofler]

Am 2011-04-07 08:14, Thomas 'PointedEars' Lahn meinte:

zephyr meinte:

var t=setTimeout("createTimeBar("+args+")",refresh);

I need to call this function "createTimeBar()" with the argument args
but the string concatenation (+) cripples the object argument.

It doesn't cripple it; it's the object's toString() method which is
called upon string concatenation: args.toString() gives [object Object]

I don't know of any other way to use settimeout with a object argument...

What's wrong with

var t=setTimeout(createTimeBar(args),refresh);

It is not equivalent, as it will call createTimeBar(args) when setTimeout()
is called, not `refresh' milliseconds after setTimeout() returned. Most
certainly you mean instead:

var t = window.setTimeout(function() { createTimeBar(args); }, refresh);

Indeed. I should refrain from posting that late.

Assuming that this is not part of a loop with changing `args', in which case
another closure would be required.


But createTimeBar() does not return (a reference to) one, so …

(It could - the return value of createTimeBar() is unknown. But as you
noted, these are two different stories.)

Gregor