text item SUBSTRING

[Scunningham99]

HI all

I have a text itemwith a size of 4. the user enters a time in here for example 1055. I wish to substring this out for example the first to characters to be the hours and the second two the minutes. Is this possible.

Thanks in advance

 

[Dan59173]

var hh = formVar.substr(0,2);
var mm = formVar.substr(2,2);

Of course the above assumes that user entered 4 digits. You may want to check the length or use the length of the string as part of the substr call.

Go to

http://www.w3schools.com

and click on "Learn JavaScript" to learn about javascript. You can also try out your coding at that site.

Dan

 

[harmmeijer]

Here is a time checker example:

<script id=&quot;time checking function&quot;>
function isTime(objTbox,blnCanBeNull,strControl,strErrLabel,blnRange,strMin,strMax,strTimeFormat) {
// objTbox: is the textbox that contains the value that needs to be checked you
// can pass this using the following command: document.getElementById('textboxid')
// bnlCanBeNull: if this value is true than the textbox can be empty if it is false the textbox cannot be empty
// strControl: This is the name of how the user preceives the textbox for example:
// starttime: **some textbox*** The user will see the textbox as starttime
// because the text starttime is before the textbox
// strErrLabel: This is the label where the errormessage wil be displayed
// blnRange: This is true if the time needs to be in a certain range
// for instance between 8:00 and 22:00
// strMin If the time needs to be in a certain range than strMin is the
// minimum vale for example a time between 8:00 and 22:00 the 8:00
// wil be the minimum value !!!IN STRMIN THE : IS LEFT OUT AND IT NEEDS TO BE 4 CHARACTERS LONG!!!
// so in this example you have to specify strMin as 0800
// strMax If the time needs to be in a certain range than strMax is the
// maximum time, given the example used in strMin strMax wil be 2200
// strTimeFormat: This is the format of the time, if you need a pm/am time format you
// have to provide a string &quot;pm/am&quot;. If it is empty a 24 hour timeformat
// is used
var str24H = &quot;&quot;;
var strTimeSuffix = &quot;&quot;;
var strMaxHourSuffix = &quot;&quot;
var strMinHourSuffix = &quot;&quot;
var blnChecking = true;
var strError = &quot;&quot;;
var i = 0;
var strHour = &quot;&quot;;
var strMinute = &quot;&quot;
var strMinMinute = &quot;&quot;;
var strMinHour = &quot;&quot;;
var strMaxMinute = &quot;&quot;;
var strMaxHour = &quot;&quot;;
var strCurrentValue = objTbox.value;
if((blnCanBeNull)&&objTbox.value==&quot;&quot{
return true;
}
if((!blnCanBeNull)&&objTbox.value==&quot;&quot{
strError = 'Please fill out a correct time in the &quot;' + strControl + '&quot; box.'
blnChecking = false;
}
for(i=0;i<objTbox.value.length;i++){
if((!isNaN(objTbox.value.charAt(i))&&objTbox.value.charAt(i)!=&quot; &quot){
strHour = strHour + objTbox.value.charAt(i).toString();
}
if(strHour.length==2){
i++;
break;
}
if(strHour.length>0&&(isNaN(objTbox.value.charAt(i))||objTbox.value.charAt(i)==&quot; &quot){
i++;
break;
}
}
while(i<objTbox.value.length){
if((!isNaN(objTbox.value.charAt(i))&&objTbox.value.charAt(i)!=&quot; &quot){
strMinute = strMinute + objTbox.value.charAt(i).toString();
}
if(strMinute.length==2){
break;
}
if(strMinute.length>0&&(isNaN(objTbox.value.charAt(i))||objTbox.value.charAt(i)==&quot; &quot){
break;
}
i++;
}
if(strHour.length==0||strMinute.length==0){
strError = 'Please fill out a correct time in the &quot;' + strControl + '&quot; box.'
blnChecking = false;
}
if(strHour.length==1&&blnChecking){
strHour = &quot;0&quot; + strHour;
}
if(strMinute.length==1&&blnChecking){
strMinute = &quot;0&quot; + strMinute;
}
if(strTimeFormat.toLowerCase()!=&quot;pm/am&quot;&&blnChecking){
if(parseInt(strHour,10)>23||parseInt(strHour,10)<0){
strError = 'Please fill out a correct time in the &quot;' + strControl + '&quot; box.'
blnChecking = false;
}
}else if(blnChecking){
if(parseInt(strHour,10)>12||parseInt(strHour,10)<1){
strError = 'Please fill out a correct time in the &quot;' + strControl + '&quot; box.\nTime format is PM/AM for example: 12:00 PM'
blnChecking = false;
}
}
if((parseInt(strMinute,10)>59||parseInt(strMinute,10)<0)&&blnChecking){
strError = 'Please fill out a correct time in the &quot;' + strControl + '&quot; box.'
blnChecking = false;
}
if(blnRange&&blnChecking){
if(strTimeFormat.toLowerCase()!=&quot;pm/am&quot{
str24H = parseInt((strHour.toString() + strMinute.toString()),10);
strMinMinute = strMin.substring(2,4);
strMinHour = strMin.substring(0,2);
strMaxMinute = strMax.substring(2,4);
strMaxHour = strMax.substring(0,2);
}else{
var intTmp = 0;
if(objTbox.value.substring(objTbox.value.length-2,objTbox.value.length).toLowerCase()!=&quot;am&quot{
intTmp = 12;
}
str24H = parseInt((parseInt(strHour,10)+intTmp).toString() + strMinute.toString(),10);
strMinMinute = strMin.substring(2,4);
if(parseInt(strMin.substring(0,2),10)>12){
strMinHour = parseInt(strMin.substring(0,2),10)-12;
strMinHourSuffix = &quot; PM&quot;
}else{
strMinHour = parseInt(strMin.substring(0,2),10);
strMinHourSuffix = &quot; AM&quot;
}
strMaxMinute = strMax.substring(2,4);
if(parseInt(strMax.substring(0,2),10)>12){
strMaxHour = parseInt(strMax.substring(0,2),10)-12;
strMaxHourSuffix = &quot; PM&quot;
}else{
strMaxHour = parseInt(strMax.substring(0,2),10);
strMaxHourSuffix = &quot; AM&quot;
}
}
if(str24H<strMin||str24H>strMax){
strError = &quot;Please use a time between &quot; + strMinHour + &quot;:&quot; + strMinMinute + &quot; &quot; + strMinHourSuffix + &quot; and &quot; + strMaxHour + &quot;:&quot; + strMaxMinute + strMaxHourSuffix
blnChecking=false
}
}
if(blnChecking){
objTbox.style.color = &quot;green&quot;;
document.getElementById(strErrLabel).innerHTML = &quot;&quot;;
if(strTimeFormat.toLowerCase()==&quot;pm/am&quot{
var intTmp = 0;
if(objTbox.value.substring(objTbox.value.length-2,objTbox.value.length).toLowerCase()!=&quot;am&quot{
strTimeSuffix=&quot; PM&quot;;
}else{
strTimeSuffix=&quot; AM&quot;;
}
objTbox.value= strHour + &quot;:&quot; + strMinute + strTimeSuffix;
}else{
objTbox.value= strHour + &quot;:&quot; + strMinute
}
}else{
objTbox.style.color = &quot;red&quot;;
document.getElementById(strErrLabel).innerHTML = &quot;<font color=red>&quot; + strError + &quot;</font>&quot;;
}
return blnChecking;
}
</script>
test text box: 24h<input type=text maxlength=5 id=txttext name=txttext><br>
<input type=button value='test script' onclick=&quot;isTime(eval('txttext'),true,'test text box: 24h','lblValidate',true,'0700','2200','24h')&quot; id=button1 name=button1><br>


test text box: PM/AM<input type=text maxlength=8 id=txtpmtext name=txtpmtext><br>
<input type=button value='test script' onclick=&quot;isTime(eval('txtpmtext'),false,'test text box: PM/AM','lblValidate',true,'0700','2200','pm/am')&quot; id=button1 name=button1><br>
<br>
<LABEL id=lblValidate></LABEL>

 

[Scunningham99]

cheers .....sored thanks alot