引入 polyfill

 {
   "name": "yas-jssdk",
-  "version": "2.2.2",
+  "version": "2.2.3",
   "description": "YOHO!采集系统的前端js的开发包",
   "keywords": ["YOHO!", "Acquisition", "System", "JS-SDK"],
   "homepage": "",

+exports.init = function(){
+    // Add ECMA262-5 method binding if not supported natively
+    if (!('bind' in Function.prototype)) {
+        Function.prototype.bind= function(owner) {
+            var that= this;
+            if (arguments.length<=1) {
+                return function() {
+                    return that.apply(owner, arguments);
+                };
+            } else {
+                var args= Array.prototype.slice.call(arguments, 1);
+                return function() {
+                    return that.apply(owner, arguments.length===0? args : args.concat(Array.prototype.slice.call(arguments)));
+                };
+            }
+        };
+    }
+
+    // Add ECMA262-5 string trim if not supported natively
+    if (!('trim' in String.prototype)) {
+        String.prototype.trim= function() {
+            return this.replace(/^\s+/, '').replace(/\s+$/, '');
+        };
+    }
+
+    // Add ECMA262-5 Array methods if not supported natively
+    if (!('indexOf' in Array.prototype)) {
+        Array.prototype.indexOf= function(find, i /*opt*/) {
+            if (i===undefined) i= 0;
+            if (i<0) i+= this.length;
+            if (i<0) i= 0;
+            for (var n= this.length; i<n; i++)
+                if (i in this && this[i]===find)
+                    return i;
+            return -1;
+        };
+    }
+    if (!('lastIndexOf' in Array.prototype)) {
+        Array.prototype.lastIndexOf= function(find, i /*opt*/) {
+            if (i===undefined) i= this.length-1;
+            if (i<0) i+= this.length;
+            if (i>this.length-1) i= this.length-1;
+            for (i++; i-->0;) /* i++ because from-argument is sadly inclusive */
+                if (i in this && this[i]===find)
+                    return i;
+            return -1;
+        };
+    }
+    if (!('forEach' in Array.prototype)) {
+        Array.prototype.forEach= function(action, that /*opt*/) {
+            for (var i= 0, n= this.length; i<n; i++)
+                if (i in this)
+                    action.call(that, this[i], i, this);
+        };
+    }
+    if (!('map' in Array.prototype)) {
+        Array.prototype.map= function(mapper, that /*opt*/) {
+            var other= new Array(this.length);
+            for (var i= 0, n= this.length; i<n; i++)
+                if (i in this)
+                    other[i]= mapper.call(that, this[i], i, this);
+            return other;
+        };
+    }
+    if (!('filter' in Array.prototype)) {
+        Array.prototype.filter= function(filter, that /*opt*/) {
+            var other= [], v;
+            for (var i=0, n= this.length; i<n; i++)
+                if (i in this && filter.call(that, v= this[i], i, this))
+                    other.push(v);
+            return other;
+        };
+    }
+    if (!('every' in Array.prototype)) {
+        Array.prototype.every= function(tester, that /*opt*/) {
+            for (var i= 0, n= this.length; i<n; i++)
+                if (i in this && !tester.call(that, this[i], i, this))
+                    return false;
+            return true;
+        };
+    }
+    if (!('some' in Array.prototype)) {
+        Array.prototype.some= function(tester, that /*opt*/) {
+            for (var i= 0, n= this.length; i<n; i++)
+                if (i in this && tester.call(that, this[i], i, this))
+                    return true;
+            return false;
+        };
+    }
+}

@@ -4,6 +4,10 @@
  */
 require('yoho.json2');
 
+// polyfill
+var polyfill = require('./polyfill');
+polyfill.init();
+
 //工具库
 var util = require('./util');