what is the similar expression for NaN in JS? typeof NaN = number , NaN is a number type, so is it a 64 floating point number in js like any other number? feels that NaN is similar to 0 for the numerical type ~ ~ num, it will be converted to a ...
create a websocket in the loop and bind the corresponding event. When the upper limit is 500, each connection will be created successfully and the backend will be returned correctly. But when this number reaches 520 +, the excess cannot be created succe...
this is the case. Recently, when there is an occasional Mysql insert operation in the system, some field data of a record is lost. When I check the printed sql statement, there is a value, such as : . before the insert operation, I output the attri...
in learning sharp jquery, I encountered a problem when I introduced the old version of jquery (version 1.71 in the book) and the latest version of jquery when the structure and content of html were the same. has a total of four check boxes, which work...
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for example, open source instant audio and video messaging is required. After the demo in webRTC is downloaded, SDK is a static library that only opens header files. where is the mobile source code for other open source SDK or WebRTC? ...