android js 模拟键盘

<HTML>
<HEAD>
    <TITLE>键盘隐藏</TITLE>
    <script src="http://www.u160.com/Js/jquery-1.4.4.min.js" type="text/javascript"></script>
    <style>
		input{ height:30px; line-height:30px; 160px; text-indent:0.4em}
    </style>
</HEAD>
<BODY style="background:#eee;">
    <input class="t1 imUn" type="text" value="123" />
	<input class="t2 imUn" type="text" value="456" />
	<hr />
	<input class="t" type="text" value="888" />
	<span>删除</span>
	<div id="log" style="background:#fff;padding:5px;"></div>
    <script>

		/*
		$("#t").bind("focus",function(){
            //app.closeKey();
			setTimeout(function(){
				app.closeKey();
			},10)
        });
		*/
		var kpObj=null;
		function kpInput(v){
			if(kpObj){
				var o=kpObj;
				var val=o.val();
				((!val.replace("-","").length)||(kpObj[0].selectionStart==0 )) &&(v==".")&&(v="0.");//.替换成0.   val.indexOf(".")<0 && 
				kpiget();
				if(v=="-"||v=="0."){//只出现在最前方 或光标最前方
					(!val.length)&&o.val(v)&& kpiset(-v.length);
					(val.length)&&(val.indexOf(v)<0 && kpObj[0].selectionStart==0) && o.val(v+o.val()) && kpiset(-v.length);
				}else
					if(!isNaN(v)||v=="."){
					   //o.val(val+""+v);
					   kpInsert(v);
					}else{
					   if(v=="DEL"){
							o.val(val.substr(0,val.length-1));
					   }else
							if(v=="完成"){
								o.blur();
							}
					}
				var l=o.val().length;
				o.val()=="00" && 	o.val(0);//解决00开始
				o.val(o.val().replace(".","$#$").replace(/./g,"").replace("$#$","."));//.只出现一次	
				kpiset(l-o.val().length)				
			}

		}
		
		function kpInsert(t){
			var i=kpObj[0].selectionStart;
			var v=kpObj.val();
			kpObj.val(v.substr(0,i)+t+v.substr(i,v.length-i));
			kpi=i+1;
		}

		var kpi=0;
		function kpiget(){
			kpi=kpObj[0].selectionStart;
		}

		function kpiset(val){
			kpObj[0].selectionStart=kpi-val;
			kpObj[0].selectionEnd=kpi-val;	
			kpi=kpi-val;
		}
		
		var isbs=false
		function kpBackSpace(){
			if(isbs) return;
			isbs=true;
			var o=kpObj[0];
			if(o){
				var i=o.selectionStart;//非IE
				$(o).val($(o).val().substr(0,i-1)+$(o).val().substr(i,$(o).val().length-i));
				o.selectionStart=i-1;
				o.selectionEnd=i-1;
			}
			isbs=false;
		}
		
		function log(txt){
			$("#log").html($("#log").html()+"<br />"+txt);
		}
		
		$(".imUn").live("focus",function(){
			kpObj=$(this);
			app.keybHide();
		}).live("blur",function(){
			objKeypad=null;
			app.keybShow();
			var v=$(this).val()
			.replace(/[^d.-]/g,"")//去掉非.-数字
			.replace(/^[0.-]{1,}$/g,"0");//-0.000 替换成0 
			v.length && (v=v.substr(0,1)+v.substr(1).replace(/-/g,"")); //去除不在最前面的-

			v!=""
			&&(v=Number(v.replace(".","$#$").replace(/./g,"").replace("$#$",".")));
			$(this).val(v);
			
		})
		
		$("span").click(function(){
		$(".t2").remove();
		}
			
		);
    </script>
</BODY>
</HTML>

　　

<HTML>
<HEAD>
    <TITLE>键盘隐藏</TITLE>
    <script src="http://www.u160.com/Js/jquery-1.4.4.min.js" type="text/javascript"></script>
    <style>
		input{ height:30px; line-height:30px; 160px; text-indent:0.4em}
    </style>
</HEAD>
<BODY style="background:#eee;">
    <input class="t1 imUn" type="text" value="123" />
	<input class="t2 imUn" type="text" value="456" readonly="readonly" />
	<hr />
	<input class="t" type="text" value="888" />
	<div id="log" style="background:#fff;padding:5px;"></div>
	<div style="height:30px; line-height:30px; background#fefefe; position:absolute;bottom:0;">bottom</div>
    <script>


		
		var keypad={
			obj:null,
			ki:0,//光标位置
			kiGet:function(){
				this.ki=this.obj[0].selectionStart;
			},
			kiSet:function(i){
				this.ki=this.ki-i;
				this.obj[0].selectionStart=this.ki;
				this.obj[0].selectionEnd=this.ki;	
			},
			insert:function(t){
				var i=this.obj[0].selectionStart;
				var v=this.obj.val();
				this.obj.val(v.substr(0,i)+t+v.substr(i,v.length-i));
				this.ki=i+1;
			},
			back:function(){
				var o=this.obj[0];
				if(o){
					var i=o.selectionStart;//非IE
					$(o).val($(o).val().substr(0,i-1)+$(o).val().substr(i,$(o).val().length-i));
					o.selectionStart=i-1;
					o.selectionEnd=i-1;
				}
			},
			input:function(v){
				var o=this.obj;
				if(o){
					log("1");
					var val=o.val();
					((!val.replace("-","").length)||(o[0].selectionStart==0 )) &&(v==".")&&(v="0.");//.替换成0.   val.indexOf(".")<0 && 
					log("2");
					this.kiGet();
					if(v=="-"||v=="0."){//只出现在最前方 或光标最前方
						log("3");
						(!val.length)&&o.val(v)&& this.kiSet(-v.length);
						(val.length)&&(val.indexOf(v)<0 && o[0].selectionStart==0) && o.val(v+o.val()) && this.kiSet(-v.length);
					}else
						if(!isNaN(v)||v=="."){
						   log("04");
						   this.insert(v);
						   log("05");
						}else{
						   if(v=="DEL"){
								o.val(val.substr(0,val.length-1));
						   }else
								if(v=="完成"){
									o.blur();
								}
						}
					log("6");
					var l=o.val().length;
					o.val()=="00" && 	o.val(0);//解决00开始
					o.val(o.val().replace(".","$#$").replace(/./g,"").replace("$#$","."));//.只出现一次	
					this.kiSet(l-o.val().length)				
				}
			}
		}

		function log(txt){
			android&&android.webLog(txt);
			//$("#log").html($("#log").html()+txt);//+"<br />"
		}
		
		$(".imUn").live("focus",function(){
			keypad.obj=$(this);
			android.keybHide();
		}).live("blur",function(){
			log("blur");
			keypad.obj=null;
			android.keybShow();
			var v=$(this).val()
			.replace(/[^d.-]/g,"")//去掉非.-数字
			.replace(/^[0.-]{1,}$/g,"0");//-0.000 替换成0 
			v.length && (v=v.substr(0,1)+v.substr(1).replace(/-/g,"")); //去除不在最前面的-

			v!=""
			&&(v=Number(v.replace(".","$#$").replace(/./g,"").replace("$#$",".")));
			$(this).val(v);
			
		})
		
		
		$(function(){
			alert(0;)
		})
		
		

    </script>
</BODY>
</HTML>

　　

<HTML>
<HEAD>
    <TITLE>键盘隐藏</TITLE>
    <script src="http://www.u160.com/Js/jquery-1.4.4.min.js" type="text/javascript"></script>
    <style>
		input[type=text]{ height:30px; line-height:30px; 160px; text-indent:0.4em}
		input[type=button]{ height:30px; line-height:30px;}
    </style>
</HEAD>
<BODY style="background:#eee;">
    <input class="t1 imUn" type="text" value="123" />
	<input class="tt" type="button" value="处理" />
	<script>
		$(".tt").click(function(){
		
			//$(".t1").val($(".t1").val().replace(/[^d.-]/g,""));
			
			//去掉结尾
			//$(".t1").val($(".t1").val().replace(/.$/g,""));
			
			//去开头的0
			//$(".t1").val($(".t1").val().replace(/^0*./g,"")); //n0.替换掉0
			
			//$(".t1").val($(".t1").val().replace(/^./g,"0."));
			
			
			//alert((/^[0.-]{1,}$/g).test($(".t1").val()));
			

			
			var v=$(".t1").val()
			.replace(/[^d.-]/g,"")//去掉非.-数字
			.replace(/^[0.-]{1,}$/g,"0");//-0.000 替换成0 
			v.length && (v=v.substr(0,1)+v.substr(1).replace(/-/g,"")); //去除不在最前面的-

			v!=""
			&&(v=Number(v.replace(".","$#$").replace(/./g,"").replace("$#$",".")));
			$(".t1").val(v);
			
			/*
						v!="0" 
			&&(
				v=v
				.replace(/.$/g,"")//去掉末尾的. 
				.replace(/^0{1,}./g,".")//先替换n0.的 
				.replace(/^0{1,}/g,"")//再替换开头为n个0（不然 0. 变成 .开头）  
				.replace(/^./g,"0.")//修复.为0.  			
			)
			
			
			var v=$(".t1").val();
			v=v.replace(v.substr(1),v.replace(/-/g,""))
			$(".t1").val(v);
			*/
			
			
		});
	</script>
</BODY>
</HTML>

　　

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原文地址：https://www.cnblogs.com/hack0573/p/5661129.html