Does Javascript has the strlen()?

[jxiong]

Hi all,

I have an onChange then call a function, but inside of my
function I would like to know whether the variable is blank.

Here is the sample code:

OnChange="assignValue(2,this.options[this.selectedIndex].text)"

...

function assignValue(opt, myString)
{
//HOW do I check to see if myString is blank and/or has
// 0 length?

}

Thanks in advance for the help.

Jay