passing objective c variable to javascript in ios

Question

How to pass a ObjectiveC string Variable to a javascript function? I have just started with javascript.. so plz 4give my ignorance...

Some more information would be useful. Maybe a code snippet? — Aatch
– Aatch, Commented Sep 4, 2010 at 12:04
Suppose the JS function is myFunc(var arg1) I Have NSString * str = some value. Now, [webView stringByEvaluatingJavaScriptFromString:.......] Here how to pass the str as a argument to the Js function myFunc() — djk
– djk, Commented Sep 4, 2010 at 12:32

Aaron Saunders · Accepted Answer · 2010-09-04 14:03:18Z

12

NSString * param  = @"foo";   
NSString * jsCallBack = [NSString stringWithFormat:@"myFunc('%@')",param];
[webView stringByEvaluatingJavaScriptFromString:jsCallBack];

answered Sep 4, 2010 at 14:03

Aaron Saunders

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2 Comments

Bozzzi Over a year ago

What if my param is object or array? Not a "foo" string?

Warrior Over a year ago

Is there any alternate way. I am trying to pass my complete web-service response so it is crashing.

Kara · Accepted Answer · 2014-02-26 18:39:44Z

4

In Objective-C

NSString *str  = @"hi ya";   
[self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"myFunc('%@')",str]];

Now call this function in the js file:

function myFunc(str)
{
   alert(str);
}

These steps should work.

edited Feb 26, 2014 at 18:39

Kara

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answered Aug 29, 2012 at 19:48

Saurabh

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