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问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: How to create a <style> tag with Javascript I write a dynamic form using java-script. I want to add the style in java-script itself. I write some code to add a style. But it is not working.This is the code am write in my project. var sheet = document.createElement('style'); sheet.type="text/css"; sheet.innerHTML = "body{color:red;}"; document.body.appendChild(sheet); Anyone help me please. 回答1: Your code is fine

问题 I need to write a test that mocks a instance of the java.lang.Class class. Is this possible via PowerMock? I tried to do following: PowerMock.createMock(Class.class); And the result is: java.lang.IllegalAccessError: java.lang.Class at sun.reflect.GeneratedSerializationConstructorAccessor12.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance(SunReflectionFactoryInstantiator

问题 Hi can anyone tell me where to place aidl file in project tree and how to use it in project source. Will aidl file gets compiled, If i build apk ?? How to use it in eclipse ? 回答1: AIDL (Android Interface Definition Language) is similar to other IDLs you might have worked with. It allows you to define the programming interface that both the client and service agree upon in order to communicate with each other using interprocess communication (IPC) Where to place aidl file ? Save aidl file in

问题 I need to write a test that mocks a instance of the java.lang.Class class. Is this possible via PowerMock? I tried to do following: PowerMock.createMock(Class.class); And the result is: java.lang.IllegalAccessError: java.lang.Class at sun.reflect.GeneratedSerializationConstructorAccessor12.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance(SunReflectionFactoryInstantiator

问题 The instanceof operator should look at the prototype, no? Why does it not change its answer after the object's prototype has been changed? Example below: // The .prototype of objects created with 'new MyKlass' // is MyKlass.prototype var MyKlass = function(name, age) { this.name = name; this.age = age; } var xx = new MyKlass('xx', 20); console.log(xx instanceof MyKlass); // true, OK xx.prototype = new String('s'); console.log(xx instanceof MyKlass); // also true, WHY??? 回答1: This case is

问题 I need to write a test that mocks a instance of the java.lang.Class class. Is this possible via PowerMock? I tried to do following: PowerMock.createMock(Class.class); And the result is: java.lang.IllegalAccessError: java.lang.Class at sun.reflect.GeneratedSerializationConstructorAccessor12.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance(SunReflectionFactoryInstantiator

问题 I'm trying to apply a filter to my queries for multi-tenancy but it doesn't allow me to apply the filter when the property is part of a navigation property: modelBuilder.Entity<Level>().HasQueryFilter(lvl => lvl.SchoolYear.TenantId == _tenantProvider.TenantId); Here, Level is the property I want filtered but the property to use for filtering which is TenantId is is inside Level.SchoolYear. If its a top-level property it works fine. How can I apply a global filter when the property I need for

问题 The instanceof operator should look at the prototype, no? Why does it not change its answer after the object's prototype has been changed? Example below: // The .prototype of objects created with 'new MyKlass' // is MyKlass.prototype var MyKlass = function(name, age) { this.name = name; this.age = age; } var xx = new MyKlass('xx', 20); console.log(xx instanceof MyKlass); // true, OK xx.prototype = new String('s'); console.log(xx instanceof MyKlass); // also true, WHY??? 回答1: This case is

问题 I'm passing env variables to a Docker container in an ansible playbook, how do I set an Ansible variable in the key in the key/value of an env? So this: - name: webproxy container docker_container: name: "webproxy" image: "webproxy" env: SERVICE_443_NAME: "webproxy" becomes this: - name: webproxy container docker_container: name: "webproxy" image: "webproxy" env: SERVICE_{{ port_number }}_NAME: "webproxy" 回答1: Use JSON notation to define a dictionary with environment variables: - name:

问题 I have a problem that I can't seem to solve by myself. I'm writing a small python script and I would like to know why my signal.alarm still works after the function it's located in returned. Here is the code: class AlarmException(Exception): pass def alarmHandler(signum, frame): raise AlarmException def startGame(): import signal signal.signal(signal.SIGALRM, alarmHandler) signal.alarm(5) try: # some code... return 1 except AlarmException: # some code... return -1 def main(): printHeader()