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The previous code uses this method to bind the event handler function for the window.onload event. It binds an anonymous function, and of course it can also bind a named function. The code example is as follows:Updated January 4师孙两人交谈中，宋青书从远处走来。任清泉是香港知名的书画家，在上环开设了一家卖文房四宝兼卖名家书画的店铺“多宝轩”。为了推广中华文化，还开班教授书法和国画。清泉妻子早丧，多年来与妻舅高大威和女儿芝华一同生活。芝华在北京完成了美术课程返回香港，这个慈父显得特别着紧，花尽心神为女儿打点一切。为了女儿回家，清泉快活了大半天。他说：“我一定要为女儿做一点事，否则我的心总是耿耿于怀。”这段父女关系，似乎有不为人知的内情……方子聪是IT界的青年才俊，终日和时间竞赛，令他的脾性也有点急躁。唯独他对母亲慧玲感情特别深厚，事母至孝，是母亲眼中的宝贝乖仔。子聪偶然机会下认识芝华，却误会芝华是个见死不救的人，从此对芝华毫无好感，芝华却似有难言之隐，有苦自己知……军中又不是所有人都赞成和谈，顾涧副将军就是主战的。赵光头粗犷的声音打断了杨长帆的畅想。The attacker first completes the three-way handshake to establish the connection, but in the last ACK reply of the three-way handshake, the TCP window size is set to 0, and then a data request is made. When the attack target sends the request result to the attacker, it stops the data transmission when it finds that the TCP window size is 0, and sends out a TCP window detection packet to ask the attacker if the TCP window has been updated. Since the attacker will not update the window size, the attack target will always maintain the TCP connection and wait for the data to be sent, and continuously carry out TCP window size detection. When the number of controlled hosts in the botnet is large, Target's connection table will gradually be exhausted, resulting in denial of service.