UIWebview JS与OC注入、模拟按钮自动点击

因工作原因，最近要用到x联的绑卡界面，但发现x联的绑卡界面属于网页，用户体验太差，为了干掉网页高度设置0，实现App原生体现效果，只能使用UIWebview的JS注入

优点：用户体验好了，不用看见烦人的网页

缺点：如果x联的页面标签换了，也要改变(必须了解JS基础)

[webView stringByEvaluatingJavaScriptFromString:@“”];

或：

#import <JavaScriptCore/JavaScriptCore.h>

JSContext * context = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

[context evaluateScript:@""];

1、JS数据注入input单文本编辑框 代码（infoA属于数据数组）

NSString * header = [NSString stringWithFormat:@"var script = document.createElement('script');script.type = 'text/javascript';"];

NSString * input = @"var child = document.getElementsByTagName('input');";

input属于网页标签，按照注入的不同换成不同标签

NSString * JsS = [NSString stringWithFormat:@"%@%@",header,input];

NSString * bodys = [NSString stringWithFormat:@"%@var objArray= new Array();",JsS];

for (int i = 0; i < infoA.count; i++)

    {

        bodys = [bodys stringByAppendingFormat:@"objArray['%d']='%@';child[%d].value='%@';",i,infoA[i],i,infoA[i]];

    }

return bodys;

2、JS注入模拟按钮自动点击，此处模拟x联的短信验证码发送ID=@"sendCode";

NSString * header = [NSString stringWithFormat:@"var script = document.createElement('script');script.type = 'text/javascript';"];

return NSString stringWithFormat:@"%@document.getElementById('%@').click();",header,ID];

3、JS根据class标签数据注入

-(NSString *)g8byClassName:(NSString *)ClassName

                    parms:(NSArray *)parms

{

    NSString * classN = [NSString stringWithFormat:@"var child=document.getElementsByClassName('%@');",ClassName];

    NSString * JsS = [NSString stringWithFormat:@"%@%@",header,classN];

    NSString * bodys = [NSString stringWithFormat:@"%@var objArray= new Array();",JsS];

    for (int i = 0; i < parms.count; i++)

    {

        bodys = [bodys stringByAppendingFormat:@"objArray['%d']='%@';child[%d].value='%@';",i,parms[i],i,parms[i]];

    }

    return bodys;

}

4、JS注入 根据class标签模拟按钮自动点击

-(NSString *)clickByClassName:(NSString *)ClassName
{
    NSString * bodys = [NSString stringWithFormat:@"%@var childClick=document.getElementsByClassName('%@');",header,ClassName];
    return [bodys stringByAppendingFormat:@"if(childClick.length>=0){childClick[0].click();}"];
}

5、注入JS函数

context[@"jsContext"] = self;

[context evaluateScript:@"jsContext.jsCallback('1');"];

-(void)jsCallback:(NSString *)JSs;

{

    CXTLog(@"函数参数 = %@",JSs);

}