就是最后面的执行JS代码。。。。报如下错误:
* “{"result":{"type":"object","subtype":"error","className":"TypeError","description":"TypeError: Cannot set property 'value' of undefined\n at <anonymous>:1:51","objectId":"{\"injectedScriptId\":13,\"id\":3}"},"exceptionDetails":{"exceptionId":10,"text":"Uncaught","lineNumber":0,"columnNumber":50,"scriptId":"96","stackTrace":{"callFrames":[{"functionName":"","scriptId":"96","url":"","lineNumber":0,"columnNumber":50}]},"exception":{"type":"object","subtype":"error","className":"TypeError","description":"TypeError: Cannot set property 'value' of undefined\n at <anonymous>:1:51","objectId":"{\"injectedScriptId\":13,\"id\":4}"}}}”