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<pre class="prettyprint lang-js"><div id="cls-Ext.util.JSON"></div>/**
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* @class Ext.util.JSON
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* Modified version of Douglas Crockford"s json.js that doesn"t
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* mess with the Object prototype
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* http://www.json.org/js.html
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* @singleton
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*/
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Ext.util.JSON = new (function(){
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var useHasOwn = !!{}.hasOwnProperty,
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isNative = function() {
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var useNative = null;
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return function() {
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if (useNative === null) {
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useNative = Ext.USE_NATIVE_JSON && window.JSON && JSON.toString() == '[object JSON]';
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}
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return useNative;
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};
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}(),
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pad = function(n) {
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return n < 10 ? "0" + n : n;
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},
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doDecode = function(json){
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return eval("(" + json + ')');
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},
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doEncode = function(o){
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if(!Ext.isDefined(o) || o === null){
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return "null";
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}else if(Ext.isArray(o)){
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return encodeArray(o);
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}else if(Ext.isDate(o)){
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return Ext.util.JSON.encodeDate(o);
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}else if(Ext.isString(o)){
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return encodeString(o);
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}else if(typeof o == "number"){
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//don't use isNumber here, since finite checks happen inside isNumber
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return isFinite(o) ? String(o) : "null";
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}else if(Ext.isBoolean(o)){
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return String(o);
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}else {
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var a = ["{"], b, i, v;
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for (i in o) {
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// don't encode DOM objects
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if(!o.getElementsByTagName){
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if(!useHasOwn || o.hasOwnProperty(i)) {
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v = o[i];
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switch (typeof v) {
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case "undefined":
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case "function":
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case "unknown":
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break;
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default:
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if(b){
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a.push(',');
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}
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a.push(doEncode(i), ":",
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v === null ? "null" : doEncode(v));
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b = true;
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}
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}
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}
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}
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a.push("}");
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return a.join("");
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}
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},
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m = {
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"\b": '\\b',
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"\t": '\\t',
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"\n": '\\n',
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"\f": '\\f',
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"\r": '\\r',
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'"' : '\\"',
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"\\": '\\\\'
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},
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encodeString = function(s){
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if (/["\\\x00-\x1f]/.test(s)) {
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return '"' + s.replace(/([\x00-\x1f\\"])/g, function(a, b) {
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var c = m[b];
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if(c){
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return c;
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}
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c = b.charCodeAt();
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return "\\u00" +
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Math.floor(c / 16).toString(16) +
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(c % 16).toString(16);
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}) + '"';
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}
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return '"' + s + '"';
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},
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encodeArray = function(o){
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var a = ["["], b, i, l = o.length, v;
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for (i = 0; i < l; i += 1) {
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v = o[i];
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switch (typeof v) {
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case "undefined":
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case "function":
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case "unknown":
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break;
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default:
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if (b) {
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a.push(',');
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}
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a.push(v === null ? "null" : Ext.util.JSON.encode(v));
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b = true;
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}
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}
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a.push("]");
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return a.join("");
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};
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this.encodeDate = function(o){
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return '"' + o.getFullYear() + "-" +
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pad(o.getMonth() + 1) + "-" +
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pad(o.getDate()) + "T" +
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pad(o.getHours()) + ":" +
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pad(o.getMinutes()) + ":" +
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pad(o.getSeconds()) + '"';
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};
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<div id="method-Ext.util.JSON-encode"></div>/**
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* Encodes an Object, Array or other value
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* @param {Mixed} o The variable to encode
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* @return {String} The JSON string
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*/
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this.encode = function() {
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var ec;
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return function(o) {
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if (!ec) {
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// setup encoding function on first access
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ec = isNative() ? JSON.stringify : doEncode;
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}
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return ec(o);
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};
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}();
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<div id="method-Ext.util.JSON-decode"></div>/**
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* Decodes (parses) a JSON string to an object. If the JSON is invalid, this function throws a SyntaxError unless the safe option is set.
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* @param {String} json The JSON string
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* @return {Object} The resulting object
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*/
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this.decode = function() {
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var dc;
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return function(json) {
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if (!dc) {
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// setup decoding function on first access
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dc = isNative() ? JSON.parse : doDecode;
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}
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return dc(json);
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};
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}();
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})();
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<div id="method-Ext-encode"></div>/**
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* Shorthand for {@link Ext.util.JSON#encode}
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* @param {Mixed} o The variable to encode
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* @return {String} The JSON string
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* @member Ext
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* @method encode
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*/
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Ext.encode = Ext.util.JSON.encode;
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<div id="method-Ext-decode"></div>/**
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* Shorthand for {@link Ext.util.JSON#decode}
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* @param {String} json The JSON string
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* @param {Boolean} safe (optional) Whether to return null or throw an exception if the JSON is invalid.
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* @return {Object} The resulting object
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* @member Ext
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* @method decode
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*/
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Ext.decode = Ext.util.JSON.decode;
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</pre>
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