Javascript for loop getting last value

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In asp.net i am using javascript for getting the input values and that part completed if i considered only single value... Now i am counting values from database in that i am having 100 records for this purpose i require loop here. I am getting values only the last record what is issue with for loop in javascript.

What I have tried:

var count = total; <--- this total is calculated in code behind
for(var i=1;i<=count;i++)
alert(count);
In count i am getting 100th record. But i require from first to hundred records how can i achieve this

Posted 19-Dec-18 6:18am

Member 8583441

Updated 19-Dec-18 6:54am

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2 solutions

Solution 1

See here: Javascript for loop and alert - Stack Overflow[^] - Paulpro's answer.

Posted 19-Dec-18 6:25am

OriginalGriff

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Member 8583441 19-Dec-18 12:34pm

If i give total.length then even 100th record is not getting means totally value is null

Afzaal Ahmad Zeeshan 19-Dec-18 12:56pm

total might be an integer value, thus length is not available there. You need to study the JavaScript type system a bit, and see what types are available and which functions are available on each type.

Member 8583441 19-Dec-18 23:48pm

thanks very much sir you saved my time. Actually the variable total is called as string but in method to get the value i have initialized as integer that's the wrong i have done. Now i changed it to string and getting 100 records as well when giving total.length to var i.

Member 8583441 19-Dec-18 23:54pm

Now i am getting another error regarding the selecting the input value. Actually this for loop is used for getting the input values and this loop is initialized in input on change in jquery that is working as expected but my problem was i am getting null value for this
let selectedOption = $('input[name=options' + i + ']:checked', '#form1').val();
I have 4 radio buttons these four radio buttons getting the value as expected but in these 4 radio buttons we will select one radio button that value i required but it is returning null. how can i solve this issue and second problem was i have html label's. I need to get the text value of these labels. I am getting for it but 1st label text i am getting at 3rd label and so on... how to solve this issue also
let lblTextA = document.getElementById('lblChoiceA' + i).innerHTML;

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Afzaal Ahmad Zeeshan · Accepted Answer · 2018-12-19T06:55:00

At the first glance I thought you were experiencing issues created by the var in JavaScript and was going to suggest the usage of let. :laugh:

But after reading the question complete, I came to know that perhaps you need to do this,

for(var i = 1; i <= count; i++) {
   alert(i);
}

And that also answers the problem you are facing,

Quote:
In count i am getting 100th record

That is because count is set to be 100 (in your code behind).

Also, you are not even accessing any element from anywhere—collection[i]—so how can you say that you are getting 100th? Did you mean to say, you get 100 always?

Please see the following links,
scope - What's the difference between using "let" and "var" to declare a variable in JavaScript? - Stack Overflow[^]
let | MDN[^]
for | MDN[^]

You can also try to explore the loop in this online fiddle that I created, Edit fiddle - JSFiddle[^]