JavaScript Discussion Boards

I have a text box andit will accept only time in the format 00:00(maximum value can be 12:59) . If user enter any of the value greater than this that part only needs to become 00. i have the code like this,but it will change the whole value to 00:00 . In the greater than conditions, what i have to write .

JavaScript

function ValidateTimeControl(s, e) {
    var isValid = true;
    if (e.value != null) {
        if (e.value.substring(0, 1).trim() == "" || e.value.substring(1, 2).trim() == "" || e.value.substring(3, 4).trim() == "" || e.value.substring(3, 4).trim() == "") {
            isValid = false;
        }
        else {
            var hours = parseInt(e.value.substring(0, 2), 10);
            var minutes = parseInt(e.value.substring(3, 5), 10);

            if (hours > 12) {alert(hours)
                isValid = false;
                
            }

            if (minutes > 59) {
                isValid = false;
            }
        }
    }
    else {
        isValid = false;
    }

    if (!isValid) {
        e.value = '00:00';
        
    }
}

Thanks
Rks

You need to rewrite the text value with the hours or minutes set to zero. Something like:

JavaScript

else {
    var hours = parseInt(e.value.substring(0, 2), 10);
    var minutes = parseInt(e.value.substring(3, 5), 10);
    
    if (hours > 12) {
        alert(hours)
        hours = 0;
    }
    if (minutes > 59) {
        minutes = 0;
    
    }
    // I'm not sure about this but you can probably figure out the exact statement
    e.value = hours.toString() + ":" + minutes.toString();
}

One of these days I'm going to think of a really clever signature.

Thanks for the reply . i Found a solution like this

JavaScript

function ValidateTimeControl(s, e) {
    var isValidHour = true;
    var isValidMin = true;
    var hours, minutes;
    if (e.value != null) {
        if (e.value.substring(0, 1).trim() == "" || e.value.substring(1, 2).trim() == "" ) { 
            isValidHour = false;
        }
        if (e.value.substring(3, 4).trim() == "" || e.value.substring(3, 4).trim() == "") {
            isValidMin = false;
        }
        else {
            hours = parseInt(e.value.substring(0, 2), 10);
            minutes = parseInt(e.value.substring(3, 5), 10);
 
            if (hours > 12) {alert(hours)
                isValidHour = false;
                
            }
 
            if (minutes > 59) {
                isValidMin = false;
                
            }
        }
    }
    else {
        isValidHour = false;
        isValidMin = false;
    }
 
    if (isValidHour == false && isValidMin == false) {
        e.value = '00:00';
    } else if (isValidHour == false) {
        e.value = e.value.replace(hours, '00');
    } else if (isValidMin == false) {
        e.value = e.value.replace(minutes, '00');
    }
}<pre lang="Javascript">