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Calculators >>>
Enter a coordinate pair for each the starting and ending points according to the Cartesian coodinate system. The script will calculate the straight line distance between the two points.
Add the below code to the <body> section of your page:
<script
language= "javascript"
type= "text/javascript" >
function
distance ( form )
{
var
x1 =
eval ( form . x1 . value );
var
y1 =
eval ( form . y1 . value );
var
x2 =
eval ( form . x2 . value );
var
y2 =
eval ( form . y2 . value );
var
xdiff =
x2 -
x1 ;
var
ydiff =
y2 -
y1 ;
form . answer . value
=
Math . pow (( xdiff
*
xdiff +
ydiff *
ydiff ),
0.5 );
}
</script>
<form>
<table
border= 3
cellspacing= 2
cellpadding= 5 >
<tr>
<td
colspan= 4
align= center > Distance
Calculator: From point A to point B </td>
</tr>
<tr>
<td
colspan= 2
align= center > Point
A </td>
<td
colspan= 2
align= center > Point
B </td>
</tr>
<tr>
<td
align= center > (x < sub > A < /sub > , </td>
<td
align= center > y < sub > A < /sub > ) </td>
<td
align= center > (x < sub > B < /sub > , </td>
<td
align= center > y < sub > B < /sub > ) </td>
</tr>
<tr>
<td
align= center > <input
type= text
name= x1
size= 5 > </td>
<td
align= center > <input
type= text
name= y1
size= 5 > </td>
<td
align= center > <input
type= text
name= x2
size= 5 > </td>
<td
align= center > <input
type= text
name= y2
size= 5 > </td>
</tr>
<tr>
<td
colspan= 4
align= center > <input
type= button
value= "Solve
Distance"
onClick = "distance(this.form)" > </td>
</tr>
<tr>
<td
colspan= 4
align= center > <input
type= text
name= answer
size= 20 > </td>
</tr>
</table>
</form>
→ R7