I already built 2 javacript files factor.js and parm.js. factor.js is an array, having several factor as elements. for example, factor.js looks like: -
var factor=["intercept", "x1","x2","x3",x4","x5"]
parm.js is also an array, having coresponding parameters to those factors in factor.js file. it looks like -
var parm=["0.5", "0.1", "-0.2","0","1","0.3"]
I want to build an regression formula based on the factors and parameters in these two js file. for example, - y= 0.5+x1*0.1+x2*(-0.2)+x3*0+x4*1+x5*0.3
i want to build text box for inputing the values of factors, like
input x1:
input x2:
...
input x5
so that when those factors change values, the y changes based on the formula.
there is a button link to y, when click the button, y changes.
how to achieve it?
Thanks
15  5792  gits 5,390
Recognized Expert Moderator Expert
hi ...
welcome to TSDN ...
it sounds like home- or coursework? please show the entire code you have so far (html and javascript) ... and tell us what the particular problem is that you have. to get the values out of the textboxes? how to update a value through the script? ... please show the efforts you already made ...
kind regards
pbmods 5,821
Recognized Expert Expert
Heya, fanchun. Welcome to TSDN!
Please use CODE tags when posting source code. See the REPLY GUIDELINES on the right side of the page next time you post.
i want to build a formula. and i need to build an array using values input in text boxes. i already have an array save in parmest.js.
i want to build an formula like
y= b0+b1*x1+b1*x2+....
array of [b0,b1, b2,...] is in parmest.js;
i need to build an array of [x1, x2,....].
and values of x1, x2 ,.... are input in text boxes, and are changable, like
x1:
x2:
...
i don't know how to create such array to save values input? there is some problem with tthe function in the following code: -
<html>
-
<head>
-
<style type='text/css'>* { font-size: 10pt;}</style>
-
<script type='text/javascript' src='PARMEST.js'></script>
-
<script type='text/javascript'>
-
function Go()
-
{
-
document.getElementById('results1').innerHTML = "";
-
var Selectedvalue = [];
-
for (i=0; i < document.getElementByType("text").length; i++)
-
{
-
Selectedvalue.push(document.getElementByType("text").value);
-
}
-
var S = 0;
-
for (i = 0; i < PARMEST.length; i++)
-
{
-
S = S+PARMEST[i]*Selectedvalue[i];
-
}
-
document.getElementById('results1').innerHTML=S
-
}
-
</script>
-
</head>
-
<FORM NAME="form1">
-
EFFECT <br>
-
<br>
-
legal_dep_other2 : <INPUT TYPE='text' NAME='legal_dep_other2 '>
-
<br>
-
year_in_school : <INPUT TYPE='text' NAME='year_in_school '>
-
<br>
-
total_income : <INPUT TYPE='text' NAME='total_income '>
-
<br>
-
age : <INPUT TYPE='text' NAME='age '>
-
<br>
-
agi : <INPUT TYPE='text' NAME='agi '>
-
<br>
-
father_highest_grade_level2 : <INPUT TYPE='text' NAME='father_highest_grade_level2 '>
-
<br>
-
fm_sc : <INPUT TYPE='text' NAME='fm_sc '>
-
<br>
-
income : <INPUT TYPE='text' NAME='income '>
-
<br>
-
invest_net_worth : <INPUT TYPE='text' NAME='invest_net_worth '>
-
<br>
-
marital_status21 : <INPUT TYPE='text' NAME='marital_status21 '>
-
<br>
-
marital_status22 : <INPUT TYPE='text' NAME='marital_status22 '>
-
<br>
-
mother_highest_grade_level2 : <INPUT TYPE='text' NAME='mother_highest_grade_level2 '>
-
<br>
-
num_in_college : <INPUT TYPE='text' NAME='num_in_college '>
-
<br>
-
num_in_family : <INPUT TYPE='text' NAME='num_in_family '>
-
<br>
-
Q_KEY : <INPUT TYPE='text' NAME='Q_KEY '>
-
<br>
-
spouse_income : <INPUT TYPE='text' NAME='spouse_income '>
-
<br>
-
veteran0 : <INPUT TYPE='text' NAME='veteran0 '>
-
<br>
-
<td valign='bottom'><INPUT TYPE='button' VALUE='Calculate' onClick='Go()'></td>
-
</FORM>
-
<p><b>Actual Score <div style= 'color: #FF0000' id='results1'></div></b></p>
-
</body>
-
</html>
pbmods 5,821
Recognized Expert Expert
Merged duplicate threads.
jx2 228
New Member -
x=document.getElementsByTagName("input");
-
-
//and you can use it like that:
-
myValue = x[1].value;
-
myName = x[1].name;
-
-
//or
-
myValue = x['myInput'].value;
-
regards
jx2
thanks.
i modified 'Go' function, but still have some problem. the result does not look what i expected.
here is the whole javascript code: - <html>
-
<head>
-
<style type='text/css'>* { font-size: 10pt;}</style>
-
<script type='text/javascript' src='PARMEST.js'></script>
-
<script type='text/javascript'>
-
function Go()
-
{
-
document.getElementById('results1').innerHTML = "";
-
var x=document.getElementsByTagName("input");
-
var S = PARMEST[0];
-
for (i = 1; i < PARMEST.length; i++)
-
{
-
S = S+PARMEST[i]*x[i].value;
-
}
-
document.getElementById('results1').innerHTML=S
-
}
-
</script>
-
</head>
-
<FORM NAME="form1">
-
EFFECT <br>
-
<br>
-
legal_dep_other2 : <INPUT TYPE='text' NAME='legal_dep_other2 '>
-
<br>
-
year_in_school : <INPUT TYPE='text' NAME='year_in_school '>
-
<br>
-
total_income : <INPUT TYPE='text' NAME='total_income '>
-
<br>
-
age : <INPUT TYPE='text' NAME='age '>
-
<br>
-
agi : <INPUT TYPE='text' NAME='agi '>
-
<br>
-
father_highest_grade_level2 : <INPUT TYPE='text' NAME='father_highest_grade_level2 '>
-
<br>
-
fm_sc : <INPUT TYPE='text' NAME='fm_sc '>
-
<br>
-
income : <INPUT TYPE='text' NAME='income '>
-
<br>
-
invest_net_worth : <INPUT TYPE='text' NAME='invest_net_worth '>
-
<br>
-
marital_status21 : <INPUT TYPE='text' NAME='marital_status21 '>
-
<br>
-
marital_status22 : <INPUT TYPE='text' NAME='marital_status22 '>
-
<br>
-
mother_highest_grade_level2 : <INPUT TYPE='text' NAME='mother_highest_grade_level2 '>
-
<br>
-
num_in_college : <INPUT TYPE='text' NAME='num_in_college '>
-
<br>
-
num_in_family : <INPUT TYPE='text' NAME='num_in_family '>
-
<br>
-
Q_KEY : <INPUT TYPE='text' NAME='Q_KEY '>
-
<br>
-
spouse_income : <INPUT TYPE='text' NAME='spouse_income '>
-
<br>
-
veteran0 : <INPUT TYPE='text' NAME='veteran0 '>
-
<br>
-
<td valign='bottom'><INPUT TYPE='button' VALUE='Calculate' onClick='Go()'></td>
-
</FORM>
-
<p><b>Actual Score <div style= 'color: #FF0000' id='results1'></div></b></p>
-
</body>
-
</html>
pbmods 5,821
Recognized Expert Expert
Fanchun, check your Private Messages (PMs). You've already been warned to start using CODE tags.
jx2 228
New Member
i modified 'Go' function, but still have some problem. the result does not look what i expected.
what results did you expect? what results youve got?
i expected to get some numbers, but i got "NaN". This means there is some problem with the function.
jx2 228
New Member
i expected to get some numbers, but i got "NaN". This means there is some problem with the function.
NaN means "not a number"
my guess is that S, PARMEST[i] or x[i].value is not a number
try to remove one of them at a time to see which one cose problems
can you give us examle of PARMEST?
you can also try to print values to see whats wrong: -
var str="";
-
for (i = 1; i < PARMEST.length; i++)
-
{
-
str += " S="+S+" parmest["+i+"]="+PARMEST[i]+" x.value="+x[i].value;
-
}
-
document.getElementById('results1').innerHTML=str;
-
}
-
that should help to find out whats wrong
e.g. one of the values could be undefine
regards
jx2
thanks.
I checked it using str code. i found the problem is that x.value is empty, it did not take value i put in the text box. it is empty because i did not set value when i use input tag to create text box. i want to input and change it later.
the other problem is that at the end of loop, x.value= calculate becausein the last input tag, i specify value='calcculate", actually i want to escape it.
do you know how to handle these problems? -
PARMEST = [
-
0.7202310101,
-
0.5141934248,
-
-0.450034571,
-
-4.94631E-6,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0,
-
0];
thanks.
I solved it .
Regards
jx2 228
New Member
thanks.
I solved it .
Regards
could you tell us what was it?
I modified the function to solve thoes problems.
I put values in text box into an array to solve the first problem.
to solve the second problem, I use index i-1 for input values.
here is the code for the function -
function Go()
-
{
-
document.getElementById('results1').innerHTML = "";
-
var Selectedvalue = [];
-
var x=document.getElementsByTagName("input");
-
for (i=0; i < x.length; i++)
-
{
-
Selectedvalue.push(x[i].value);
-
}
-
var S = PARMEST[0];
-
for (i = 1; i < PARMEST.length; i++)
-
{
-
S = S+PARMEST[i]*Selectedvalue[i-1];
-
var t=Math.exp(S);
-
var p=t/(1+t);
-
}
-
document.getElementById('results1').innerHTML=p
-
}
-
pbmods 5,821
Recognized Expert Expert
Heya, Fanchun.
Thanks for posting the solution!
And thanks for using CODE tags, too!
Glad to hear you got it working! Good luck with your project, and if you ever need anything, post back anytime :)
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