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POHow do I use Ajax to save a cache file?
 

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  1. POHow do I use Ajax to save a cache file?
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    <p>I have a javascript/ajax function which looks for a json file hosted on another server. I need my function to perform the following actions:</p> <ol> <li>Get json file from external server</li> <li>Save json file on its own local server</li> <li>Check to see if json file is older than 1 hr</li> <li>If it isnt older than 1hr then use that data</li> <li>If it is older than 1hr - re-download from external server and overwrite local version</li> </ol> <p>Currently my function gets the data from the external sever everytime it is called. I need to add in this caching functionality but am unsure how to takle it.</p> <p>Can anyone offer any advise?</p> <p>Here my code:</p> <pre><code> function ajaxLoad(page,url,type,variety,category , widgetClickedId) { /* * Checking the clicked id is the same as passed in one * TODO refactor so the clicked id only ever gets passed */ if(widgetId != widgetClickedId &amp;&amp; widgetClickedId != undefined) { return false; } var website = $('#button-print'+widgetId).data("website"); var page = $('#button-print'+widgetId).data("page"); $.ajax({ type: 'GET', url: 'www.myothersite.com/api/v1/productchoice.json?website='+website, async: true, jsonp: 'callback', dataType: 'jsonp', success: function(productchoice) { if(productchoice['brand'+widgetId] == 'null' || productchoice['brand'+widgetId] == undefined) { productchoice['brand'+widgetId] = ''; } //check that all values are not null , if not , then show the widget if( productchoice['brand'+widgetId] == '' &amp;&amp; productchoice['subject'+widgetId] == '' &amp;&amp; productchoice['market'+widgetId] == '' &amp;&amp; productchoice['type'+widgetId] == '' &amp;&amp; productchoice['bookazinebrands'+widgetId] == '') { //is this corect? $('#gdmContainer'+widgetId).hide(); //return false; } else { $('#gdmContainer'+widgetId).show(); } setRibbons(productchoice.ribbonTop , productchoice.ribbonBottom); getProductChoice( productchoice ); setLoveTitle( productchoice); setDefaultBtn(productchoice['defaultBtn'+widgetId]); return productchoice; } }); </code></pre> <p>Thanks in advance!</p>
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