return false has to stop execution in java script

Question

i was comparing from date and to date in java script if the value is false i am returning false but the program is executing.

my java script code

function Noofdays() {

        var total= document.getElementById('ctl00_MainContent_Txtabc');
            var days = document.getElementById('ctl00_MainContent_ddldays');

            if (total= days) {
                alert("same");
                return true;
            }
            else {
                alert("not same");
                return false;
            }   
        }

i was calling this function from c# code in save button,

ScriptManager.RegisterStartupScript(this, GetType(), "FromDateSample", "Noofdays();", true);

and i had a on client click event in save button.

= is assignment, == or === is comparison

mplungjan
– mplungjan

2014-01-25 07:30:45 +00:00
Commented Jan 25, 2014 at 7:30 — mplungjan
– mplungjan, Commented Jan 25, 2014 at 7:30

mculhane · Accepted Answer · 2014-01-25 07:30:58Z

1

The condition of your if-statement is assigning the value of days to total. To compare the two values, you need to use a comparison operator (== or ===).

answered Jan 25, 2014 at 7:30

mculhane

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2 Comments

user3035605 Over a year ago

i did it but my programe still executes when the condition is false

user3035605 Over a year ago

i had given return false but it was not working,how can i do that ??

mplungjan · Accepted Answer · 2014-01-25 07:32:26Z

1

= is assignment, == or === is comparison
You need to tack a .value on to your fields

You may want to convert to numbers

var total= +document.getElementById('ctl00_MainContent_Txtabc').value;
var days = +document.getElementById('ctl00_MainContent_ddldays').value;
if (total==days) {

answered Jan 25, 2014 at 7:32

mplungjan

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Comments

Jesuraja · Accepted Answer · 2016-01-19 13:00:40Z

0

Use return before function calling.

ScriptManager.RegisterStartupScript(this, GetType(), "FromDateSample", "return Noofdays();", true);

Button:

<asp:Button ... OnClientClick="return Noofdays();">

answered Jan 19, 2016 at 13:00

Jesuraja

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