jQuery实现还能输入N字符

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创新互联公司是一家专注于成都网站建设、网站建设和四川电信机房托管的网络公司,有着丰富的建站经验和案例。


                       
                           
                       
                       
                           
                       
                       
                           
                       
                   

                               
                           

                               

                                   

                           

                                还能输入
                               
                           

JQuery:


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