add

bi/polyfill.js

@@ -1,33 +1,99 @@
-if(![].indexOf){
-    /**
-     * 检查指定的值是否在数组中
-     * @param {Object} o 要检查的值
-     * @return {Number}  o在数组中的索引（如果不在数组中则返回-1）
-     */
-    Array.prototype.indexOf = function (o) {
-        for (var i = 0, len = this.length; i < len; i++) {
-            if (_.isEqual(o, this[i])) {
-                return i;
+// Production steps of ECMA-262, Edition 5, 15.4.4.14
+// Reference: http://es5.github.io/#x15.4.4.14
+if (!Array.prototype.indexOf) {
+    Array.prototype.indexOf = function (searchElement, fromIndex) {
+
+        var k;
+
+        // 1. Let o be the result of calling ToObject passing
+        //    the this value as the argument.
+        if (this == null) {
+            throw new TypeError('"this" is null or not defined');
         }
+
+        var o = Object(this);
+
+        // 2. Let lenValue be the result of calling the Get
+        //    internal method of o with the argument "length".
+        // 3. Let len be ToUint32(lenValue).
+        var len = o.length >>> 0;
+
+        // 4. If len is 0, return -1.
+        if (len === 0) {
+            return -1;
         }
+
+        // 5. If argument fromIndex was passed let n be
+        //    ToInteger(fromIndex); else let n be 0.
+        var n = fromIndex | 0;
+
+        // 6. If n >= len, return -1.
+        if (n >= len) {
             return -1;
         }
-}
-if(![].lastIndexOf){
-    /**
-     * 检查指定的值是否在数组中
-     * ie67不支持数组的这个方法
-     * @param {Object} o 要检查的值
-     * @return {Number}  o在数组中的索引（如果不在数组中则返回-1）
-     */
-    Array.prototype.lastIndexOf = function (o) {
-        for (var len = this.length, i = len - 1; i >= 0; i--) {
-            if (_.isEqual(o, this[i])) {
-                return i;
+
+        // 7. If n >= 0, then Let k be n.
+        // 8. Else, n<0, Let k be len - abs(n).
+        //    If k is less than 0, then let k be 0.
+        k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
+
+        // 9. Repeat, while k < len
+        while (k < len) {
+            // a. Let Pk be ToString(k).
+            //   This is implicit for LHS operands of the in operator
+            // b. Let kPresent be the result of calling the
+            //    HasProperty internal method of o with argument Pk.
+            //   This step can be combined with c
+            // c. If kPresent is true, then
+            //    i.  Let elementK be the result of calling the Get
+            //        internal method of o with the argument ToString(k).
+            //   ii.  Let same be the result of applying the
+            //        Strict Equality Comparison Algorithm to
+            //        searchElement and elementK.
+            //  iii.  If same is true, return k.
+            if (k in o && o[k] === searchElement) {
+                return k;
+            }
+            k++;
         }
+        return -1;
+    };
+}
+if (!Array.prototype.lastIndexOf) {
+    Array.prototype.lastIndexOf = function (searchElement /*, fromIndex*/) {
+        'use strict';
+
+        if (this === void 0 || this === null) {
+            throw new TypeError();
         }
+
+        var n, k,
+            t = Object(this),
+            len = t.length >>> 0;
+        if (len === 0) {
             return -1;
         }
+
+        n = len - 1;
+        if (arguments.length > 1) {
+            n = Number(arguments[1]);
+            if (n != n) {
+                n = 0;
+            }
+            else if (n != 0 && n != (1 / 0) && n != -(1 / 0)) {
+                n = (n > 0 || -1) * Math.floor(Math.abs(n));
+            }
+        }
+
+        for (k = n >= 0
+            ? Math.min(n, len - 1)
+            : len - Math.abs(n); k >= 0; k--) {
+            if (k in t && t[k] === searchElement) {
+                return k;
+            }
+        }
+        return -1;
+    };
 }/**
  * 特殊情况
  * Created by wang on 15/6/23.

docs/polyfill.js

@@ -1,33 +1,99 @@
-if(![].indexOf){
-    /**
-     * 检查指定的值是否在数组中
-     * @param {Object} o 要检查的值
-     * @return {Number}  o在数组中的索引（如果不在数组中则返回-1）
-     */
-    Array.prototype.indexOf = function (o) {
-        for (var i = 0, len = this.length; i < len; i++) {
-            if (_.isEqual(o, this[i])) {
-                return i;
+// Production steps of ECMA-262, Edition 5, 15.4.4.14
+// Reference: http://es5.github.io/#x15.4.4.14
+if (!Array.prototype.indexOf) {
+    Array.prototype.indexOf = function (searchElement, fromIndex) {
+
+        var k;
+
+        // 1. Let o be the result of calling ToObject passing
+        //    the this value as the argument.
+        if (this == null) {
+            throw new TypeError('"this" is null or not defined');
         }
+
+        var o = Object(this);
+
+        // 2. Let lenValue be the result of calling the Get
+        //    internal method of o with the argument "length".
+        // 3. Let len be ToUint32(lenValue).
+        var len = o.length >>> 0;
+
+        // 4. If len is 0, return -1.
+        if (len === 0) {
+            return -1;
         }
+
+        // 5. If argument fromIndex was passed let n be
+        //    ToInteger(fromIndex); else let n be 0.
+        var n = fromIndex | 0;
+
+        // 6. If n >= len, return -1.
+        if (n >= len) {
             return -1;
         }
-}
-if(![].lastIndexOf){
-    /**
-     * 检查指定的值是否在数组中
-     * ie67不支持数组的这个方法
-     * @param {Object} o 要检查的值
-     * @return {Number}  o在数组中的索引（如果不在数组中则返回-1）
-     */
-    Array.prototype.lastIndexOf = function (o) {
-        for (var len = this.length, i = len - 1; i >= 0; i--) {
-            if (_.isEqual(o, this[i])) {
-                return i;
+
+        // 7. If n >= 0, then Let k be n.
+        // 8. Else, n<0, Let k be len - abs(n).
+        //    If k is less than 0, then let k be 0.
+        k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
+
+        // 9. Repeat, while k < len
+        while (k < len) {
+            // a. Let Pk be ToString(k).
+            //   This is implicit for LHS operands of the in operator
+            // b. Let kPresent be the result of calling the
+            //    HasProperty internal method of o with argument Pk.
+            //   This step can be combined with c
+            // c. If kPresent is true, then
+            //    i.  Let elementK be the result of calling the Get
+            //        internal method of o with the argument ToString(k).
+            //   ii.  Let same be the result of applying the
+            //        Strict Equality Comparison Algorithm to
+            //        searchElement and elementK.
+            //  iii.  If same is true, return k.
+            if (k in o && o[k] === searchElement) {
+                return k;
+            }
+            k++;
         }
+        return -1;
+    };
+}
+if (!Array.prototype.lastIndexOf) {
+    Array.prototype.lastIndexOf = function (searchElement /*, fromIndex*/) {
+        'use strict';
+
+        if (this === void 0 || this === null) {
+            throw new TypeError();
         }
+
+        var n, k,
+            t = Object(this),
+            len = t.length >>> 0;
+        if (len === 0) {
             return -1;
         }
+
+        n = len - 1;
+        if (arguments.length > 1) {
+            n = Number(arguments[1]);
+            if (n != n) {
+                n = 0;
+            }
+            else if (n != 0 && n != (1 / 0) && n != -(1 / 0)) {
+                n = (n > 0 || -1) * Math.floor(Math.abs(n));
+            }
+        }
+
+        for (k = n >= 0
+            ? Math.min(n, len - 1)
+            : len - Math.abs(n); k >= 0; k--) {
+            if (k in t && t[k] === searchElement) {
+                return k;
+            }
+        }
+        return -1;
+    };
 }/**
  * 特殊情况
  * Created by wang on 15/6/23.

src/polyfill/array.js

@@ -1,31 +1,97 @@
-if(![].indexOf){
-    /**
-     * 检查指定的值是否在数组中
-     * @param {Object} o 要检查的值
-     * @return {Number}  o在数组中的索引（如果不在数组中则返回-1）
-     */
-    Array.prototype.indexOf = function (o) {
-        for (var i = 0, len = this.length; i < len; i++) {
-            if (_.isEqual(o, this[i])) {
-                return i;
+// Production steps of ECMA-262, Edition 5, 15.4.4.14
+// Reference: http://es5.github.io/#x15.4.4.14
+if (!Array.prototype.indexOf) {
+    Array.prototype.indexOf = function (searchElement, fromIndex) {
+
+        var k;
+
+        // 1. Let o be the result of calling ToObject passing
+        //    the this value as the argument.
+        if (this == null) {
+            throw new TypeError('"this" is null or not defined');
         }
+
+        var o = Object(this);
+
+        // 2. Let lenValue be the result of calling the Get
+        //    internal method of o with the argument "length".
+        // 3. Let len be ToUint32(lenValue).
+        var len = o.length >>> 0;
+
+        // 4. If len is 0, return -1.
+        if (len === 0) {
+            return -1;
         }
+
+        // 5. If argument fromIndex was passed let n be
+        //    ToInteger(fromIndex); else let n be 0.
+        var n = fromIndex | 0;
+
+        // 6. If n >= len, return -1.
+        if (n >= len) {
             return -1;
         }
-}
-if(![].lastIndexOf){
-    /**
-     * 检查指定的值是否在数组中
-     * ie67不支持数组的这个方法
-     * @param {Object} o 要检查的值
-     * @return {Number}  o在数组中的索引（如果不在数组中则返回-1）
-     */
-    Array.prototype.lastIndexOf = function (o) {
-        for (var len = this.length, i = len - 1; i >= 0; i--) {
-            if (_.isEqual(o, this[i])) {
-                return i;
+
+        // 7. If n >= 0, then Let k be n.
+        // 8. Else, n<0, Let k be len - abs(n).
+        //    If k is less than 0, then let k be 0.
+        k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
+
+        // 9. Repeat, while k < len
+        while (k < len) {
+            // a. Let Pk be ToString(k).
+            //   This is implicit for LHS operands of the in operator
+            // b. Let kPresent be the result of calling the
+            //    HasProperty internal method of o with argument Pk.
+            //   This step can be combined with c
+            // c. If kPresent is true, then
+            //    i.  Let elementK be the result of calling the Get
+            //        internal method of o with the argument ToString(k).
+            //   ii.  Let same be the result of applying the
+            //        Strict Equality Comparison Algorithm to
+            //        searchElement and elementK.
+            //  iii.  If same is true, return k.
+            if (k in o && o[k] === searchElement) {
+                return k;
+            }
+            k++;
         }
+        return -1;
+    };
+}
+if (!Array.prototype.lastIndexOf) {
+    Array.prototype.lastIndexOf = function (searchElement /*, fromIndex*/) {
+        'use strict';
+
+        if (this === void 0 || this === null) {
+            throw new TypeError();
         }
+
+        var n, k,
+            t = Object(this),
+            len = t.length >>> 0;
+        if (len === 0) {
             return -1;
         }
+
+        n = len - 1;
+        if (arguments.length > 1) {
+            n = Number(arguments[1]);
+            if (n != n) {
+                n = 0;
+            }
+            else if (n != 0 && n != (1 / 0) && n != -(1 / 0)) {
+                n = (n > 0 || -1) * Math.floor(Math.abs(n));
+            }
+        }
+
+        for (k = n >= 0
+            ? Math.min(n, len - 1)
+            : len - Math.abs(n); k >= 0; k--) {
+            if (k in t && t[k] === searchElement) {
+                return k;
+            }
+        }
+        return -1;
+    };
 }