Errors in coding

Finding errors in code
To become better at coding we must learn to find
errors in the code. There are several things to
look for in particular.
*remember that if the code is missing one small
then it will not work.

Semi-colon;


Always make sure a semi-colon is at the end
of a statement for example-



document.write("grade is a");



numb1=parseInt(numb1);

Upper case and lower case


Words used must be identical or will not work,
for example-



numb1=parseInt(NUMB3); (wont work)



numb1=parseInt(numb1); will work

Open and closing tags </>




You must ensure you close the html, body and
script tags for the code to work, for example</html> </body> </script>

Quotation marks “”






Quotation marks must be in the () brackets
when there is a word/sentence to be displayed
for examplevar marks = prompt("enter the marks of
test",""); (will work)
var marks = prompt(enter the marks of test,);
(won't work)

Copy the following codes into
notepad and fix to make work
<html><body><script

type="text/javascript">

var marks = prompt("enter the marks of test","");
marks=(marks);
if(marks=60)
{
document.write("grade is a")
}
else ^ (marks >=45)
{
document.write("grade is b
}

Continued...
else if(marks >=30)
{
document.write(grade is c")
}
else
^
document.write("grade is f");
}
</script>
</body>

<html>
<script type="text/javascript">
var numb= prompt(enter a number to find it's square root")
numb=parseInt();
var Result=numb*numb
document.write("The square root is" , Result);
</script>
<body>
</html>



<html>



<body>



<script type="text/javascript">







var numb1=prompt("enter the adjacent of
triangle?")
var numb^=prompt("enter the opposite of
triangle?")
var numb3=prompt("enter the longest
side/hypotenuse of triangle?");



numb1=parseInt(NUMB)



numb2=parseInt(numb2);

Continued...
numb3=parseInt(numb;
var Result=(numb1*numb1+numb2*numb2!=numb3);
^ (Result^=numb3)
{
document.write (this is not right triangle");
}
else
{
document.write ("this is right triangle");
}

Errors in coding

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