jQuery监听扫码枪禁止手动输入的实现方法

var barcode = { listenerObj: null, oneKeyTime : '', /* 一次按键时间间隔 */ twoKeyTime : '', /* 两次按键时间间隔 */ keyDownTime: '', /* 键按下的时间 */ barcodeLen : 8 , /* 条形码长度 */ spanTime : 70, /* 一次按键按下到释放的时间间隔 */ on_key_down : function (){ var that = this; this.listenerObj.keydown(function(e){ if(e.which !== 13 && !(that.in_range(e.which))){ $(that.listenerObj).val(''); return ; } var d = new Date(); var curTime = parseInt(d.getTime()); if(that.keyDownTime !== '' && that.keyDownTime !== NaN){ that.twoKeyTime = curTime - that.keyDownTime; } that.keyDownTime = curTime; }); }, on_key_up : function(){ var that = this; this.listenerObj.keyup(function(e){ var d = new Date(); var keyUpTime = d.getTime(); that.oneKeyTime = parseInt(keyUpTime) - parseInt(that.keyDownTime); var isHand = that.checkHandInput(); if(isHand && that.in_range(e.which)){ layer.msg('禁止手动输入'); $(that.listenerObj).val(""); } }) }, on_key_press : function(){ var that = this; this.listenerObj.keypress(function(e){ if(e.which == 13 && that.check_barcode()){ that.createListEl(); } }); }, checkHandInput : function(){ if((this.oneKeyTime > this.spanTime) || this.twoKeyTime > this.spanTime){ return true; }else{ return false; } }, }

 $("#barCode").startListen({ barcodeLen : 10, letter : true, number : true, show : function(code){ layer.msg(code); } });