Cannot read property 'replace' of undefined

class="card-body">

"categorieErrorMsg">

@Html.ValidationMessageFor(model => model.Categories, "", new { @class = "text-danger" })

"category-values">

class="table table-condensed" id="category-table">

@Html.DisplayNameFor(model => model.Categories.First().Name)

@Html.DisplayNameFor(model => model.Categories.First().InvoiceLabel)

@Html.DisplayNameFor(model => model.Categories.First().TaxRate)

@Html.DisplayNameFor(model => model.Categories.First().TaxCode)

@Html.DisplayNameFor(model => model.Categories.First().Attribute)

Valid value

@Html.DisplayNameFor(model => model.Categories.First().StartDate)

@Html.DisplayNameFor(model => model.Categories.First().EndDate)

"category-table">

@Html.EditorFor(model => model.Categories, new { htmlAttributes = new { @class = "form-control" } })

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Laxmidhar Sahoo6y ago
hi

The replace function takes two string arguments.

Your first argument is not a string

Thanks and Regards
Jenith Thakkar6y ago
Hi Praveen

Here you had given a screenshot of

function Addcategory(){
....
}

In this function there is a lines like
newRow = newRow.replace(...

so before that lines just check newRow is undefined or blank like below

if(newRow != '' && newRow !='undefined')
{
newRow = newRow.replace(...
newRow = newRow.replace(...
}

Thank you
Arvind Kushwaha6y ago
Hi Praveen,

You can simply check

if(newRow) { // It will check for nonempty string and not undefined.
// Write your logic here.
}
Rajanikant Hawaldar6y ago
Hello Praveen i am also new to web tech i am trying using below link, correct me if am wrong.

https://stackoverflow.com/questions/15920734/call-ajax-function-in-javascript

//newRow dont have proper data.
if( newRow != "" && newRow !="undefined") // Nan is 'undefined' data

{

newRow = newRow.replace(/_0_/g, "_" + indexNo + "_");

}
Praveen Kumar6y ago
Hi RajaniKant,

Since i am new to this tech.
can you edit my code where i need to do the changes.
Rajanikant Hawaldar6y ago
if newRow is empty / undefined then this exception will occur add if condition refer below example.
https://stackoverflow.com/questions/34584319/error-cannot-read-property-replace-of-undefined