if key || key == "") function openCacheClicked(){\x05var key = $('#encryptionKey').val();\x05\x05if key || key == "") \x05{\x05\x05\x05alert("Invalid key");\x05\x05\x05return;\x05\x05}
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/29 01:00:44
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if key || key == "") function openCacheClicked(){\x05var key = $('#encryptionKey').val();\x05\x05if key || key == "") \x05{\x05\x05\x05alert("Invalid key");\x05\x05\x05return;\x05\x05}
if key || key == "")
function openCacheClicked(){
\x05var key = $('#encryptionKey').val();\x05
\x05if key || key == "") \x05{\x05
\x05\x05alert("Invalid key");\x05
\x05\x05return;\x05
\x05}
if key || key == "") function openCacheClicked(){\x05var key = $('#encryptionKey').val();\x05\x05if key || key == "") \x05{\x05\x05\x05alert("Invalid key");\x05\x05\x05return;\x05\x05}
不存在表示这个指针对应的内存空间不存在,也就是没有被实例化
为空表示,内存空间存在,但是值为""