javascript question

[peterjcs]

i completely new to javascript. I have a problem here. I want to get user input number and then sum them and print the total. But the problem is i will get a problem.

Example: 1 + 2 should = 3 but i get 12?

how to plus the number?

<script language="javascript">

var num1 = prompt("Enter Number here", "Type here");
var num2 = prompt("Enter Number here", "Type here");
var total;

total = num1+num2;

document.write(total);

</script>

Thank

[ShosMeister]

JavaScript Prompt

It's important to remember that the value returned by prompt() and subsequently stored in a variable will always be a string data type. This is fine if you are dealing with text, but might present problems to the code if you plan to receive numeric data through prompt(). Javascript provides two functions to convert this string value to a numeric data type; parseInt() and parseFloat().
The parseInt() converts a string to an integer value while parseFloat() parses the string converting it to a floating point number.

[peterjcs]

thank ShosMeister.

[ShosMeister]

np :)

[sodkgb]

I have a similar problem, seen this message and figured it might be a fit to ask for help.

I want to select a checkbox and add the values together, I have it working however if the values are more than 1 for a field it will not work?

See below:

<script language="JavaScript">
<!--
function calculate(what) {
what.answer.value =0;
for (var i=1,answer=0;i<6;i++)
answer += (what.elements['CourseOrder' + i].checked)&(what.elements['CourseOrder' + i].value-0);
what.answer.value = answer;
}
//-->
</script>

<form>
<INPUT type="checkbox" NAME="CourseOrder1" VALUE="1" onclick="calculate(this.form)"><br>
<INPUT type="checkbox" NAME="CourseOrder2" VALUE="1" onclick="calculate(this.form)"><br>
<INPUT type="checkbox" NAME="CourseOrder3" VALUE="1" onclick="calculate(this.form)"><br>
<INPUT type="checkbox" NAME="CourseOrder4" VALUE="1" onclick="calculate(this.form)"><br>
<INPUT type="checkbox" NAME="CourseOrder5" VALUE="1" onclick="calculate(this.form)"><br>

<input type="text" name="answer">

</form>

Suggestions very welcome,

Thanks,

Kevin

[ShosMeister]

Not sure what you mean "if the values are more than 1 for a field". Are you getting an error? If so, what is it as it seems to work fine from what I can see.

Oh and welcome to the Tech Support Forum.

[sodkgb]

I want to insert different values for example CourseOrder1 value=250

The funny thing is it will not calculate? Instead it just gives an answer of 0?

Thank you for your input,

Kevin

[BrentC]

Hello folks!

When I execute the following, the i variable value goes straight to 176...but if I take out the 'for' loop statement (and the i variable) it works ok?

function testFunction() {
for(i=0; i<=176; i++) {
setTimeout("Nothing()", 100);
doScroll(i+400,0,176-i,140,0);
}
}

Thanks.