Variable not working

Question

I want to set a variable value. But I don't know how to. I want replace 3456 with "value".

Code:

NSString *value = textbox.text;

NSString *field = [captcha stringByEvaluatingJavaScriptFromString:@"document.getElementById('mainPagePart:rn3').value='3456';"];

Answer 1

我想您要说的是要将value的内容放入字符串中吗？

NSString *field = [captcha stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"document.getElementById('mainPagePart:rn3').value='%@';", value]];