Passing Javascript Variable to Objective-C -

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i've seen how pass objective-c variable javascript right here, passing objective c variable javascript in ios, how pass variable javascript objective-c when i'm using this:

[webview stringbyevaluatingjavascriptfromstring:@"var elems = document.body.getelementsbytagname(\"u\");" "passthisvartoobjc = elems.length;"

well, call stringly typed.

because return type of stringbyevaluatingjavascriptfromstring: nsstring *, either need stick using string or coercing value other (read:more usable) type.

but anyway, stringbyevaluatingjavascriptfromstring: return value of javascript variable without problem.

the way accomplished through use of anonymous function (which in case self-executing):

nsstring *numofelements = [webview stringbyevaluatingjavascriptfromstring:@"(function() {var elems = document.body.getelementsbytagname(\"u\"); return elems.length;})();"];  //do normal stuff numofelements cast int or cool that.

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