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JavaScript Basic Evaluation
I've been given a couple simple tasks for an evaluation that I'd like to verify.
1) The first is :
Please implement a JavaScript function called “thisisaloop” that initializes a variable called ‘dl’ with a value of ‘0’ and uses a for loop to increment the value of ‘dl’ by 1 on each iteration. Allow the for loop to execute until ‘dl’ possesses a value of ’10’, then have the function return the value of the ‘dl’ variable.
Here is my answer- will this work?
function thisisaloop()
{
var dl=0;
for (var i=0;i<10;i++)
{
dl=dl+1;
}
return dl
}
2) The second is to point out the errors in a JavaScript below. It is meant to run a while loop that adds 1 to the value of the 'dl count' variable upon each iteration, then returns the value of 'dl count' when the value reaches 100.
Line #
01 <script type="text/javascript">
02 var result = dlRules(0);
03
04 function dlRules (dl_count) {
05 var limit = 100;
06 match = 1;
07
08 while (dl_count != limit)
09 dl_count ++ match;
10 if (dl_count == 95) {
11 dl_count = 10;
12 }
13 }
14 return (dl_count)
15 }
16 </script>
1) The first is :
Please implement a JavaScript function called “thisisaloop” that initializes a variable called ‘dl’ with a value of ‘0’ and uses a for loop to increment the value of ‘dl’ by 1 on each iteration. Allow the for loop to execute until ‘dl’ possesses a value of ’10’, then have the function return the value of the ‘dl’ variable.
Here is my answer- will this work?
function thisisaloop()
{
var dl=0;
for (var i=0;i<10;i++)
{
dl=dl+1;
}
return dl
}
2) The second is to point out the errors in a JavaScript below. It is meant to run a while loop that adds 1 to the value of the 'dl count' variable upon each iteration, then returns the value of 'dl count' when the value reaches 100.
Line #
01 <script type="text/javascript">
02 var result = dlRules(0);
03
04 function dlRules (dl_count) {
05 var limit = 100;
06 match = 1;
07
08 while (dl_count != limit)
09 dl_count ++ match;
10 if (dl_count == 95) {
11 dl_count = 10;
12 }
13 }
14 return (dl_count)
15 }
16 </script>
Who is Participating?
01 <script type="text/javascript">
02 var result = dlRules(0);
03
04 function dlRules (dl_count) {
05 var limit = 100;
06 match = 1;
07
08 while (dl_count != limit)
09 dl_count ++ match;
10 if (dl_count == 95) {
11 dl_count = 10;
12 }
13 }
14 return (dl_count)
15 }
16 </script>
I'm by no means a javascript expert but here's what i think I see wrong...
dl_count ++ match;
dl_count ++
that will increment by one without the match variable.
if (dl_count == 95) {
11 dl_count = 10;
12 }
that says if the count is 95, go back to 10, so technically it'll never reach 100
I definitely think that the issues you point out are part of what would be incorrect, that math won't allow the result to be shown. Being a novice myself, I'm also thinking that there are some statements and expressions that might be incorrectly identified/coded. Is the dlRules treated properly?
Also, for part 1 of the question- will the code I put together return the correct result?
Also, for part 1 of the question- will the code I put together return the correct result?
Here is a fiddle that shows #2 looping to 100:
http://jsfiddle.net/PH85K/1/
of course the dl_count wouldn't be in there, it'll be passed from the function(dl_count)
http://jsfiddle.net/PH85K/1/
function dlRules (dl_count) {
var limit = 100;
var dl_count = 0;
while (dl_count != limit)
{
dl_count ++;
}
return (dl_count)
}
of course the dl_count wouldn't be in there, it'll be passed from the function(dl_count)
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You have to surround your javascript in tags to get it to work so yes, those are important and you have to keep those. However, the type = text/javascript is default, and not needed. (this may only be for html5, it may be required in html4)
so
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can be
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