diff --git a/README.md b/README.md
index 73227f8..fc79b14 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,16 @@ An appropriate version for each dependency is included in the dist/ directory.
The complete single-file version is generated at `dist/xlsx.full.min.js`
+## ECMAScript 5 compatibility
+
+Since xlsx.js uses ES5 functions like `Array#forEach`, older browsers require
+[Polyfills](http://git.io/QVh77g). This repo and the gh-pages branch include
+[a shim](https://github.com/SheetJS/js-xlsx/blob/master/shim.js)
+
+To use the shim, add the shim before the script tag that loads xlsx.js:
+
+
+
## Parsing Workbooks
For parsing, the first step is to read the file.
diff --git a/bits/34_extprops.js b/bits/34_extprops.js
index 383a7c5..601c7c1 100644
--- a/bits/34_extprops.js
+++ b/bits/34_extprops.js
@@ -11,7 +11,7 @@ var EXT_PROPS = [
["LinksUpToDate", "LinksUpToDate", "bool"],
["ScaleCrop", "ScaleCrop", "bool"],
["HeadingPairs", "HeadingPairs", "raw"],
- ["TitlesOfParts", "TitlesOfParts", "raw"],
+ ["TitlesOfParts", "TitlesOfParts", "raw"]
];
XMLNS.EXT_PROPS = "http://schemas.openxmlformats.org/officeDocument/2006/extended-properties";
diff --git a/shim.js b/shim.js
new file mode 100644
index 0000000..0391678
--- /dev/null
+++ b/shim.js
@@ -0,0 +1,231 @@
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
+if (!Object.keys) {
+ Object.keys = (function () {
+ var hasOwnProperty = Object.prototype.hasOwnProperty,
+ hasDontEnumBug = !({toString: null}).propertyIsEnumerable('toString'),
+ dontEnums = [
+ 'toString',
+ 'toLocaleString',
+ 'valueOf',
+ 'hasOwnProperty',
+ 'isPrototypeOf',
+ 'propertyIsEnumerable',
+ 'constructor'
+ ],
+ dontEnumsLength = dontEnums.length;
+
+ return function (obj) {
+ if (typeof obj !== 'object' && typeof obj !== 'function' || obj === null) throw new TypeError('Object.keys called on non-object');
+
+ var result = [];
+
+ for (var prop in obj) {
+ if (hasOwnProperty.call(obj, prop)) result.push(prop);
+ }
+
+ if (hasDontEnumBug) {
+ for (var i=0; i < dontEnumsLength; i++) {
+ if (hasOwnProperty.call(obj, dontEnums[i])) result.push(dontEnums[i]);
+ }
+ }
+ return result;
+ };
+ })();
+}
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
+if (!Array.prototype.filter)
+{
+ Array.prototype.filter = function(fun /*, thisp */)
+ {
+ "use strict";
+
+ if (this == null)
+ throw new TypeError();
+
+ var t = Object(this);
+ var len = t.length >>> 0;
+ if (typeof fun != "function")
+ throw new TypeError();
+
+ var res = [];
+ var thisp = arguments[1];
+ for (var i = 0; i < len; i++)
+ {
+ if (i in t)
+ {
+ var val = t[i]; // in case fun mutates this
+ if (fun.call(thisp, val, i, t))
+ res.push(val);
+ }
+ }
+
+ return res;
+ };
+}
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim
+if (!String.prototype.trim) {
+ String.prototype.trim = function () {
+ return this.replace(/^\s+|\s+$/g, '');
+ };
+}
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
+if (!Array.prototype.forEach)
+{
+ Array.prototype.forEach = function(fun /*, thisArg */)
+ {
+ "use strict";
+
+ if (this === void 0 || this === null)
+ throw new TypeError();
+
+ var t = Object(this);
+ var len = t.length >>> 0;
+ if (typeof fun !== "function")
+ throw new TypeError();
+
+ var thisArg = arguments.length >= 2 ? arguments[1] : void 0;
+ for (var i = 0; i < len; i++)
+ {
+ if (i in t)
+ fun.call(thisArg, t[i], i, t);
+ }
+ };
+}
+
+// Production steps of ECMA-262, Edition 5, 15.4.4.19
+// Reference: http://es5.github.com/#x15.4.4.19
+if (!Array.prototype.map) {
+ Array.prototype.map = function(callback, thisArg) {
+
+ var T, A, k;
+
+ if (this == null) {
+ throw new TypeError(" this is null or not defined");
+ }
+
+ // 1. Let O be the result of calling ToObject passing the |this| value as the argument.
+ 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 IsCallable(callback) is false, throw a TypeError exception.
+ // See: http://es5.github.com/#x9.11
+ if (typeof callback !== "function") {
+ throw new TypeError(callback + " is not a function");
+ }
+
+ // 5. If thisArg was supplied, let T be thisArg; else let T be undefined.
+ if (thisArg) {
+ T = thisArg;
+ }
+
+ // 6. Let A be a new array created as if by the expression new Array(len) where Array is
+ // the standard built-in constructor with that name and len is the value of len.
+ A = new Array(len);
+
+ // 7. Let k be 0
+ k = 0;
+
+ // 8. Repeat, while k < len
+ while(k < len) {
+
+ var kValue, mappedValue;
+
+ // 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
+ if (k in O) {
+
+ // i. Let kValue be the result of calling the Get internal method of O with argument Pk.
+ kValue = O[ k ];
+
+ // ii. Let mappedValue be the result of calling the Call internal method of callback
+ // with T as the this value and argument list containing kValue, k, and O.
+ mappedValue = callback.call(T, kValue, k, O);
+
+ // iii. Call the DefineOwnProperty internal method of A with arguments
+ // Pk, Property Descriptor {Value: mappedValue, : true, Enumerable: true, Configurable: true},
+ // and false.
+
+ // In browsers that support Object.defineProperty, use the following:
+ // Object.defineProperty(A, Pk, { value: mappedValue, writable: true, enumerable: true, configurable: true });
+
+ // For best browser support, use the following:
+ A[ k ] = mappedValue;
+ }
+ // d. Increase k by 1.
+ k++;
+ }
+
+ // 9. return A
+ return A;
+ };
+}
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
+if (!Array.prototype.indexOf) {
+ Array.prototype.indexOf = function (searchElement, fromIndex) {
+ if ( this === undefined || this === null ) {
+ throw new TypeError( '"this" is null or not defined' );
+ }
+
+ var length = this.length >>> 0; // Hack to convert object.length to a UInt32
+
+ fromIndex = +fromIndex || 0;
+
+ if (Math.abs(fromIndex) === Infinity) {
+ fromIndex = 0;
+ }
+
+ if (fromIndex < 0) {
+ fromIndex += length;
+ if (fromIndex < 0) {
+ fromIndex = 0;
+ }
+ }
+
+ for (;fromIndex < length; fromIndex++) {
+ if (this[fromIndex] === searchElement) {
+ return fromIndex;
+ }
+ }
+
+ return -1;
+ };
+}
+
+
+// https://github.com/ttaubert/node-arraybuffer-slice
+// (c) 2013 Tim Taubert
+// arraybuffer-slice may be freely distributed under the MIT license.
+
+"use strict";
+
+if (typeof ArrayBuffer !== 'undefined' && !ArrayBuffer.prototype.slice) {
+ ArrayBuffer.prototype.slice = function (begin, end) {
+ begin = (begin|0) || 0;
+ var num = this.byteLength;
+ end = end === (void 0) ? num : (end|0);
+
+ // Handle negative values.
+ if (begin < 0) begin += num;
+ if (end < 0) end += num;
+
+ if (num === 0 || begin >= num || begin >= end) {
+ return new ArrayBuffer(0);
+ }
+
+ var length = Math.min(num - begin, end - begin);
+ var target = new ArrayBuffer(length);
+ var targetArray = new Uint8Array(target);
+ targetArray.set(new Uint8Array(this, begin, length));
+ return target;
+ };
+}
diff --git a/xlsx.js b/xlsx.js
index fc87854..66c9148 100644
--- a/xlsx.js
+++ b/xlsx.js
@@ -1475,7 +1475,7 @@ var EXT_PROPS = [
["LinksUpToDate", "LinksUpToDate", "bool"],
["ScaleCrop", "ScaleCrop", "bool"],
["HeadingPairs", "HeadingPairs", "raw"],
- ["TitlesOfParts", "TitlesOfParts", "raw"],
+ ["TitlesOfParts", "TitlesOfParts", "raw"]
];
XMLNS.EXT_PROPS = "http://schemas.openxmlformats.org/officeDocument/2006/extended-properties";