change variable in javascript

[tony wong]

i use the following script (from textbook) to restrict 160 character in
Message_cont textbox.

how can i to change the number of character to 70 if any double bytes
character detected in the textbox. Thanks a lot.

tony

*********************************
var text1;
function checklength()
{
var txt;
txt=document.formsend.Message_cont.value;
n=txt.length;
if (n>160)
{
document.formsend.Message_cont.value=text1;
return;
}
text1=document.formsend.Message_cont.value;
}

*************detect double byte character****************
( /[\u0100-\uffff]/.test( document.formsend.Message_cont.value ) )

 

[Evertjan.]

tony wong wrote on 22 okt 2006 in comp.lang.javascript:

i use the following script (from textbook) to restrict 160 character
in Message_cont textbox.

how can i to change the number of character to 70 if any double bytes
character detected in the textbox. Thanks a lot.

var text1 = 'My text';

function checklength() {

var cont = document.forms['formsend'].elements['Message_cont'];
var dblB = /[\u0100-\uffff]/.test( cont.value );
var max = ( dblB ) ? 160 : 70;

if ( cont.value.length > max )
cont.value = text1
else
text1 = cont.value;

};

 

[tony wong]

Thanks a lot. Evertjan

tony wong wrote on 22 okt 2006 in comp.lang.javascript:

i use the following script (from textbook) to restrict 160 character
in Message_cont textbox.

how can i to change the number of character to 70 if any double bytes
character detected in the textbox. Thanks a lot.

var text1 = 'My text';

function checklength() {

var cont = document.forms['formsend'].elements['Message_cont'];
var dblB = /[\u0100-\uffff]/.test( cont.value );
var max = ( dblB ) ? 160 : 70;

if ( cont.value.length > max )
cont.value = text1
else
text1 = cont.value;

};