diff --git a/avalon.js b/avalon.js
index 2e7231502..28728e4ef 100644
--- a/avalon.js
+++ b/avalon.js
@@ -2335,8 +2335,8 @@
         '"': '\\"',
         '\\': '\\\\'
     };
-    var quote = window.JSON && JSON.stringify || function() {
-        return   '"' + this.replace(/[\\\"\x00-\x1f]/g, function(a) {
+    var quote = window.JSON && JSON.stringify || function(str) {
+        return   '"' + str.replace(/[\\\"\x00-\x1f]/g, function(a) {
             var c = meta[a];
             return typeof c === 'string' ? c :
                     '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
diff --git a/avalon.min.js b/avalon.min.js
index 42b94d0e6..70db3ebbf 100644
--- a/avalon.min.js
+++ b/avalon.min.js
@@ -67,8 +67,8 @@ if(d=d.element){var l=[b].concat(g);if("up"===c)t?Ea(d,"dataavailable",l):(h=doc
 [];na(b,d)};var Rb=J("AREA,BASE,BASEFONT,BR,COL,COMMAND,EMBED,HR,IMG,INPUT,LINK,META,PARAM,SOURCE,TRACK,WBR,NOSCRIPT,SCRIPT,STYLE,TEXTAREA"),Pb=t?15:50,lb=/ms-(\w+)-?(.*)/,mb={"if":10,repeat:90,widget:110,each:1400,"with":1500,duplex:2E3,on:3E3},Qb=J("animationend,blur,change,input,click,dblclick,focus,keydown,keypress,keyup,mousedown,mouseenter,mouseleave,mousemove,mouseout,mouseover,mouseup,scroll,submit");if(!"1"[0])var Na=Aa(512),Hc=/\s+(ms-[^=\s]+)(?:=("[^"]*"|'[^']*'|[^\s>]+))?/g,Ic=/^['"]/,
 Jc=/<\w+\b(?:(["'])[^"]*?(\1)|[^>])*>/i,Kc=/&amp;/g,kb=function(b){b=b.outerHTML;if("</"===b.slice(0,2)||!b.trim())return[];b=b.match(Jc)[0];var c=[],d,e;if(Na[b])return Na[b];for(;d=Hc.exec(b);)(e=d[2])&&(e=(Ic.test(e)?e.slice(1,-1):e).replace(Kc,"&")),d=d[1].toLowerCase(),d.match(lb),c.push({name:d,specified:!0,value:e||""});return Na(b,c)};var Tb=/\|\s*(\w+)\s*(\([^)]*\))?/g,Sb=/\|\|/g,Ub=/U2hvcnRDaXJjdWl0/g,nb=/&lt;/g,ob=/&gt;/g,Lc=/\/\*[\w\W]*?\*\/|\/\/[^\n]*\n|\/\/[^\n]*$|"(?:[^"\\]|\\[\w\W])*"|'(?:[^'\\]|\\[\w\W])*'|[\s\t\n]*\.[\s\t\n]*[$\w\.]+/g,
 Mc=/[^\w$]+/g,Nc=RegExp(""+("\\b"+"break,case,catch,continue,debugger,default,delete,do,else,false,finally,for,function,if,in,instanceof,new,null,return,switch,this,throw,true,try,typeof,var,void,while,with,abstract,boolean,byte,char,class,const,double,enum,export,extends,final,float,goto,implements,import,int,interface,long,native,package,private,protected,public,short,static,super,synchronized,throws,transient,volatile,arguments,let,yield,undefined".replace(/,/g,"\\b|\\b")+"\\b"),"g"),Oc=/\b\d[^,]*/g,
-Pc=/^,+|,+$/g,Oa=Aa(512),Yb=function(b){var c=","+b.trim();if(Oa[c])return Oa[c];b=b.replace(Lc,"").replace(Mc,",").replace(Nc,"").replace(Oc,"").replace(Pc,"").split(/^$|,+/);for(var d=[],e={},f=0;f<b.length;++f){var g=b[f];e[g]||(e[g]=d.push(g))}return Oa(c,d)},Ba=Aa(256),Zb=/\w\[.*\]|\w\.\w/,Xb=/(\$proxy\$[a-z]+)\d+$/,Qc={"\b":"\\b","\t":"\\t","\n":"\\n","\f":"\\f","\r":"\\r",'"':'\\"',"\\":"\\\\"},$b=r.JSON&&JSON.stringify||function(){return'"'+this.replace(/[\\\"\x00-\x1f]/g,function(b){var c=
-Qc[b];return"string"===typeof c?c:"\\u"+("0000"+b.charCodeAt(0).toString(16)).slice(-4)})+'"'};avalon.parseExprProxy=O;var pa=J("a,abbr,b,span,strong,em,font,i,kbd","inline");avalon.mix(pa,J("div,h1,h2,h3,h4,h5,h6,section,p","block"));avalon.parseDisplay=Da;var Rc=function(b){return t?"table-cell"===getComputedStyle(b,null).display:!0}(q.createElement("td")),Db={"accept-charset":"acceptCharset","char":"ch",charoff:"chOff","class":"className","for":"htmlFor","http-equiv":"httpEquiv"};"accessKey,allowTransparency,bgColor,cellPadding,cellSpacing,codeBase,codeType,colSpan,contentEditable,dateTime,defaultChecked,defaultSelected,defaultValue,frameBorder,isMap,longDesc,maxLength,marginWidth,marginHeight,noHref,noResize,noShade,readOnly,rowSpan,tabIndex,useMap,vSpace,valueType,vAlign".replace(B,
+Pc=/^,+|,+$/g,Oa=Aa(512),Yb=function(b){var c=","+b.trim();if(Oa[c])return Oa[c];b=b.replace(Lc,"").replace(Mc,",").replace(Nc,"").replace(Oc,"").replace(Pc,"").split(/^$|,+/);for(var d=[],e={},f=0;f<b.length;++f){var g=b[f];e[g]||(e[g]=d.push(g))}return Oa(c,d)},Ba=Aa(256),Zb=/\w\[.*\]|\w\.\w/,Xb=/(\$proxy\$[a-z]+)\d+$/,Qc={"\b":"\\b","\t":"\\t","\n":"\\n","\f":"\\f","\r":"\\r",'"':'\\"',"\\":"\\\\"},$b=r.JSON&&JSON.stringify||function(b){return'"'+b.replace(/[\\\"\x00-\x1f]/g,function(b){var d=
+Qc[b];return"string"===typeof d?d:"\\u"+("0000"+b.charCodeAt(0).toString(16)).slice(-4)})+'"'};avalon.parseExprProxy=O;var pa=J("a,abbr,b,span,strong,em,font,i,kbd","inline");avalon.mix(pa,J("div,h1,h2,h3,h4,h5,h6,section,p","block"));avalon.parseDisplay=Da;var Rc=function(b){return t?"table-cell"===getComputedStyle(b,null).display:!0}(q.createElement("td")),Db={"accept-charset":"acceptCharset","char":"ch",charoff:"chOff","class":"className","for":"htmlFor","http-equiv":"httpEquiv"};"accessKey,allowTransparency,bgColor,cellPadding,cellSpacing,codeBase,codeType,colSpan,contentEditable,dateTime,defaultChecked,defaultSelected,defaultValue,frameBorder,isMap,longDesc,maxLength,marginWidth,marginHeight,noHref,noResize,noShade,readOnly,rowSpan,tabIndex,useMap,vSpace,valueType,vAlign".replace(B,
 function(b){Db[b.toLowerCase()]=b});var Eb=/\(([^)]*)\)/;H.insertBefore(avalon.parseHTML("<style id='avalonStyle'>.avalonHide{ display: none!important }</style>"),H.firstChild);var Sc=/<noscript.*?>(?:[\s\S]+?)<\/noscript>/img,Tc=/<noscript.*?>([\s\S]+?)<\/noscript>/im,Pa=function(){return new (r.XMLHttpRequest||ActiveXObject)("Microsoft.XMLHTTP")},da=function(b,c,d){if(b=b.getAttribute(c)){c=0;for(var e;e=d[c++];)if(e.hasOwnProperty(b)&&"function"===typeof e[b])return e[b]}},Qa=avalon.templateCache=
 {},aa=q.createElement("div");aa.innerHTML="a";try{aa.contains(aa.firstChild),avalon.contains=function(b,c){return b.contains(c)}}catch(ed){avalon.contains=Ya}var Ca=avalon.bindingExecutors={attr:function(b,c,d){var e=d.type,f=d.param;if("css"===e)avalon(c).css(f,b);else if("attr"===e)(d=!1===b||null===b||void 0===b)?c.removeAttribute(f):t?d||c.setAttribute(f,b):(f=Db[f]||f,d?c.removeAttribute(f):c[f]=b);else if("include"===e&&b){var g=d.vmodels,h=da(c,"data-include-rendered",g),k=da(c,"data-include-loaded",
 g),l=function(b){k&&(b=k.apply(c,[b].concat(g)));avalon.innerHTML(c,b);wa(c,g);h&&gb(c,function(){h.call(c)})};if("src"===d.param)if(Qa[b])l(Qa[b]);else{var m=Pa();m.onreadystatechange=function(){if(4===m.readyState){var c=m.status;if(200<=c&&300>c||304===c||1223===c)l(Qa[b]=m.responseText)}};m.open("GET",b,!0);"withCredentials"in m&&(m.withCredentials=!0);m.setRequestHeader("X-Requested-With","XMLHttpRequest");m.send(null)}else{var n=b&&1==b.nodeType?b:q.getElementById(b);if(n){if("NOSCRIPT"===n.tagName&&
diff --git a/mobile.js b/mobile.js
index a655191be..d9344fbb2 100644
--- a/mobile.js
+++ b/mobile.js
@@ -35,15 +35,17 @@ void function() {
             clickEvent.markFastClick = "司徒正美";
             element.dispatchEvent(clickEvent)
         },
-        focus: function(targetElement) {
-            if (this.canFocus(targetElement)) {
-                var length;
-                // Issue #160: on iOS 7, some input elements (e.g. date datetime) throw a vague TypeError on setSelectionRange. These elements don't have an integer value for the selectionStart and selectionEnd properties, but unfortunately that can't be used for detection because accessing the properties also throws a TypeError. Just check the type instead. Filed as Apple bug #15122724.
-                if (isIOS && targetElement.setSelectionRange && targetElement.type.indexOf("date") !== 0 && targetElement.type !== 'time') {
-                    length = targetElement.value.length
-                    targetElement.setSelectionRange(length, length)
+        focus: function(target) {
+            if (this.canFocus(target)) {
+                //https://github.com/RubyLouvre/avalon/issues/254
+                var value = target.value
+                target.value = value
+                if (isIOS && target.setSelectionRange && target.type.indexOf("date") !== 0 && target.type !== 'time') {
+                    // iOS 7, date datetime等控件直接对selectionStart,selectionEnd赋值会抛错
+                    var n = value.length
+                    target.setSelectionRange(n, n)
                 } else {
-                    targetElement.focus()
+                    target.focus()
                 }
             }
         },