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<script type="text/javascript"> (function(){ /** *dqKeys v1.0.0 | (c) 2016www.findme.wang *@params json keys 监听的按键 *@params bool isOrder 按键是否有相应的顺序 *@params Function sucFuc 完成按键的回调函数 *@params Function cancelFuc 完成按键取消后的回调函数 *@author lidequan */ var dqKeys = function(keys,isOrder,sucFuc,cancelFuc) { // 函数体 return new dqKeys.fn.init(keys,isOrder,sucFuc,cancelFuc); } dqKeys.fn = dqKeys.prototype = { 'version':'1.0.0', //版本号 'author':'lidequan', //作者 'rightKeys':{}, //监听的按键{key:code},code为按键对应的ascii码 'curKeys':[], //当前按下的键 'sucFuc':null, //完成按键的回调函数 'cancelFuc':null, //完成按键取消后的回调函数 'isFinsh':false, //判断是否完成按键 'isOrder':false, //按键是否有相应的顺序 init:function(keys,isOrder,sucFuc,cancelFuc){ this.rightKeys=keys; this.sucFuc=sucFuc; this.cancelFuc=cancelFuc; this.isOrder=isOrder; return this; }, listenkeys:function(){//监听用户键盘操作 var _self=this; _self.addListener('keydown', function(oEvent){ var oEvent =oEvent || window.event; if(!_self.arrayContain(_self.curKeys,oEvent.keyCode)){ if(_self.isOrder && _self.getNextKey() == oEvent.keyCode){ _self.curKeys.push(oEvent.keyCode); }else if(!_self.isOrder){ _self.curKeys.push(oEvent.keyCode); } } if(_self.checkResult(_self.rightKeys,_self.curKeys)){ if(_self.sucFuc && !_self.isFinsh){ _self.sucFuc(); } _self.isFinsh=true; } }); _self.addListener('keyup', function(oEvent){ var oEvent =oEvent || window.event; if(_self.checkResult(_self.rightKeys,_self.curKeys) && _self.isFinsh){ //完成按键,又取消的事件 if(_self.cancelFuc){ _self.cancelFuc(); } } _self.curKey=_self.remove(_self.curKeys,oEvent.keyCode); _self.isFinsh=false; }); }, arrayContain:function(arr,val){//判断数组中是否包含某个元素 return (arr.indexOf(val) == -1) ? false:true; }, checkResult:function(json,arr){ //判断用户是否按下监听的所有按键 for(var i in json){ if(arr.indexOf(json[i])==-1){ return false; } } return true; }, remove:function(arr,val) { //从数组中移除某个元素 var index = arr.indexOf(val); if (index > -1) { arr.splice(index, 1); } return arr; }, getNextKey:function(){ //获取下一次按键对应的ascii码 for(var i in this.rightKeys){ if(this.curKeys.indexOf(this.rightKeys[i])==-1){ return this.rightKeys[i]; } } return null; }, addListener:function(ev,fn,bool){ //事件绑定 if (document.attachEvent) { document.attachEvent('on' + ev, fn); }else{ document.addEventListener(ev,fn,bool); } } } dqKeys.fn.init.prototype = dqKeys.fn; window.dqKeys = window.$$= dqKeys; })(); //1.测试 dqKeys({'a':65,'b':66},true,function(){ console.log('okey'); },function(){ console.log('cancel'); }).listenkeys(); //2.测试 var dqKeys=new $$({'c':67,'d':68},false,function(){ console.log('keys down '); },function(){ console.log('keys cancel'); }); dqKeys.listenkeys(); </script>
</pre><pre code_snippet_id="1841482" snippet_file_name="blog_20160820_4_218709" name="code" class="javascript">
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原文地址:http://blog.csdn.net/hsd2012/article/details/52260331