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, Sep 04 '10 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, Sep 04 '10 at 12:32

score 12 · Accepted Answer · answered Sep 04 '10 at 14:03

12

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

answered Sep 04 '10 at 14:03

Aaron Saunders

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1

What if my param is object or array? Not a "foo" string? – Bozzzi Apr 09 '13 at 05:06
1

Is there any alternate way. I am trying to pass my complete web-service response so it is crashing. – Warrior Aug 24 '15 at 20:00

score 4 · Answer 2 · edited Feb 26 '14 at 18:39

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 '14 at 18:39

Kara

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answered Aug 29 '12 at 19:48

Saurabh

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passing objective c variable to javascript in ios

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