想要获取到select元素内被选中的option元素,以下书写正确的是()。A、$("select").filter("option:selected")B、$("select").find("option:selected")C、$("select").is("option:selected")D、$("select").has("option:selected")

想要获取到select元素内被选中的option元素,以下书写正确的是()。

  • A、$("select").filter("option:selected")
  • B、$("select").find("option:selected")
  • C、$("select").is("option:selected")
  • D、$("select").has("option:selected")

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下面()选择器可以获取到下拉列表的选中项。A、$("select:selected")B、$("select option:selected")C、$("select option:select")D、$("select option:checked")

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单选题想要获取到select元素内被选中的option元素,以下书写正确的是()。A$(select).filter(option:selected)B$(select).find(option:selected)C$(select).is(option:selected)D$(select).has(option:selected)

单选题下面()选择器可以获取到下拉列表的选中项。A$(select:selected)B$(select option:selected)C$(select option:select)D$(select option:checked)

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单选题You are the network administrator for All network servers run Windows Server 2003. One of your servers, TestKingSrv1, contains a RAID-5 volume. Routine monitoring reveals a failed disk in the set. TestKingSrv1 is running and users are connecting to shared folders on the RAID-5 volume. You shut down the server and replace the failed disk. Now you need to ensure that the RAID-5 volume is redundant. What should you do?()AImport the foreign disk that is to replace the failed disk. Select the failed region and then select the Repair Volume option.BInitialize the new disk that is to replace the failed disk. Select the failed region and then select the Reactive Disk option.CInitialize the new disk that is to replace the failed disk. Select the failed region and then select the Repair Volume option.DImport the foreign disk that is to replace the failed disk. Select the failed region and then select the Reactive Disk option.

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单选题Following an unscheduled power outage, theadministrator needs to power up an IVM-managed system. For the given system,what is the first step in this process?()APhysically press the appropriate button on the system.BPhysically disconnect and reconnect the power cable on the system.CLog into the IVM using a Web Browser, select the managed-system and select the Power on option from the Operations menu.DLog into the HMC using a Web Browser, select the managed-system and select the Power on option from the Operations menu.

单选题You need to give the MANAGER role the ability to select from, insert into, and modify existing rows in the STUDENT_GRADES table. Anyone given this MANAGER role should be able to pass those privileges on to others. Which statement accomplishes this? ()AGRANT select, insert, update ON student_grades TO managerBGRANT select, insert, update ON student_grades TO ROLE managerCGRANT select, insert, modify ON student_grades TO manager WITH GRANT OPTION;DGRANT select, insert, update ON student_grades TO manager WITH GRANT OPTION;EGRANT select, insert, update ON student_grades TO ROLE manager WITH GRANT OPTION;FGRANT select, insert, modify ON student_grades TO ROLE manager WITH GRANT OPTION;