OC调用js(JavaScriptCore)

来源：互联网发布：@徐老师淘宝店编辑：程序博客网时间：2024/05/16 11:55

简单代码如下：

-(void)addBtn{    //按钮    UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];    btn.frame=CGRectMake(0, 0, 100, 40);    [btn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];    [btn setTitle:@"btn" forState:UIControlStateNormal];    [btn setImage:[UIImage imageNamed:@"hotLine"] forState:UIControlStateNormal];    [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [self.view insertSubview:btn aboveSubview:self.webView];}-(void)btnClick{    //首先创建JSContext 对象（此处通过当前webView的键获取到jscontext）    JSContext *context=[self.webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];    NSString *alertJS=@"callSelf()"; //准备执行的js代码    [context evaluateScript:alertJS];//通过oc方法调用js的alert}

HTML:

<!DOCTYPE html><html>    <head lang="en">        <meta charset="UTF-8">            <title></title>    </head>    <script type="text/javascript">        function callOC(value1,value2){            zwlog(value1,value2);        }       function callSelf(){           alert('test js OC');       }    </script>    <body bgcolor="#a9a9a9">        <div style="text-align: center;margin-top: 50px">            <input type="button" value="确定" onClick="callOC('11111','1')" />        </div>    </body></html>

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