pass value from html to javascript as array

Question

I write a code that gives value from database and saves them in a list and I put list into array and send it to ASP hiddenField. I want to pass this data to JavaScript var as array. How can I do it? I want to save values as string in array.

aspx:

<asp:HiddenField ID="hdnCity_BillMonth" runat="server" />
<asp:HiddenField ID="hdnCount_BillMount" runat="server" />

aspx.vb:

 hdnCity_BillMonth.Value = String.Join(",", City)
 hdnCount_BillMount.Value = String.Join(",", Value)

City and Value are List

 var City_BillMounth ;
 var Count_BillMounth;

u got the list values in coma separated form ?then just assign the hidden field value to a variable in js. like var hdnvalue=document.getElementById("hiddenfieldid"); then split the string using comma like var samar=hdnvalue.split(',') — Arunprasanth K V
– Arunprasanth K V, Commented May 24, 2015 at 6:12
@ArunprasanthKV my hiddenfield value in html is like this: value="a,b,c" — masoodtav
– masoodtav, Commented May 24, 2015 at 6:13
did you got the output ? let me know if you still have any problems ? — Arunprasanth K V
– Arunprasanth K V, Commented May 24, 2015 at 6:23

Nomesh DeSilva · Accepted Answer · 2015-05-24 06:12:42Z

1

Since you're joining city values with a "," symbol you can easily convert it into a java script array using split like this:

I assume you are getting your hdnCity_BillMonth values like "city1, city2,city3,...cityN"

 var City_BillMounth = [];
 City_BillMounth = hdnCity_BillMonth.split(",");
 console.log("city Array: "+ City_BillMounth );

do the same for the hdnCount_BillMount as well.

answered May 24, 2015 at 6:12

Nomesh DeSilva

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3 Comments

masoodtav Over a year ago

thanks. But I debug It and throw this error: TypeError message:"document.getElementById(...) is null" I use: var Count_BillMounth = [] Count_BillMounth = document.getElementById('ContentPlaceHolder1_hdnCount_BillMount').split(",");

masoodtav Over a year ago

I see this in html: <input type="hidden" name="ctl00$ContentPlaceHolder1$hdnCity_BillMonth" id="ContentPlaceHolder1_hdnCity_BillMonth" value="city1,city2,city3,city4,city5" />

masoodtav Over a year ago

same error :( But I solve that by your idea.. tnx very much :)

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