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POExt JS 4: Convert JSON object to another JSON object using JavaScript
 

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    <p>What is the easiest way to convert JSON A to JSON B using JavaScript?</p> <p><strong>JSON A:</strong></p> <pre><code>{ "d": [ {"__type":"Web.Controls.Shared.GeneralService+DropdownKeyValuePair","key":"0","value":"one"}, {"__type":"Web.Controls.Shared.GeneralService+DropdownKeyValuePair","key":"1","value":"two"}, {"__type":"Web.Controls.Shared.GeneralService+DropdownKeyValuePair","key":"2","value":"three"} ] } </code></pre> <p><strong>JSON B:</strong></p> <pre><code>{ data: [ {"key":"1", "value":"one"}, {"key":"2", "value":"two"}, {"key":"3", "value":"three"} ] } </code></pre> <p>===================</p> <h1>8/1/2012 update (answer when using Ext JS and you have an ASP.NET proxy:</h1> <p>I didn't provide this in my question about what I'm using for a JavaScript framework, but it turns out you can implicitly eliminate the "d" key by specifying the value "d" in the root property </p> <pre><code>var statusDropdownStore = new Ext.data.Store({ proxy: new Ext.ux.AspWebAjaxProxy({ url: '/track/Controls/Shared/GeneralService.asmx/GetDropdownOptions', actionMethods: { create: 'POST', destroy: 'DELETE', read: 'POST', update: 'POST' }, extraParams: { user_login: authUser, table_name: '[status]' }, reader: { type: 'json', model: 'DropdownOption', root: 'd' }, headers: { 'Content-Type': 'application/json; charset=utf-8' } }) }); </code></pre> <p><strong>Proxy:</strong></p> <pre><code>Ext.define('Ext.ux.AspWebAjaxProxy', { extend: 'Ext.data.proxy.Ajax', require: 'Ext.data', buildRequest: function (operation) { var params = Ext.applyIf(operation.params || {}, this.extraParams || {}), request; params = Ext.applyIf(params, this.getParams(params, operation)); if (operation.id &amp;&amp; !params.id) { params.id = operation.id; } params = Ext.JSON.encode(params); request = Ext.create('Ext.data.Request', { params: params, action: operation.action, records: operation.records, operation: operation, url: operation.url }); request.url = this.buildUrl(request); operation.request = request; return request; } }); </code></pre> <p><strong>Combo Box (dropdown) configuration:</strong></p> <pre><code> { xtype: 'combo', fieldLabel: 'Status', emptyText: 'Select a status...', store: statusDropdownStore, valueField: 'key', displayField: 'value', mode: 'remote', // or 'local' renderTo: document.body }, </code></pre>
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