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POSave state of jqGrid in localStorage after leaving the site
 

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  1. POSave state of jqGrid in localStorage after leaving the site
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    <p>I want to save the state of a jqGrid (sortingcolumn, sortingorder, width of columns, toolbar searchfields), when the user leave the site and restore the grid when he comes back to the site. </p> <p>My first try was to load the data with the <code>getGridParam</code> method then serialize it with JSON and save it as JSON-String in a cookie. But a cookie have not enough space to save the gridParam. So I decided to use localstorage to save the state of the Grid. My code looks like this:</p> <pre><code>$(window).unload(function () { // Load GridParam var gridData = $('#Grid').jqGrid('getGridParam')}; // Serialize it to as JSON-String var gridDataAsString = $.toJSON(gridData); // Save the serialized Griddata in the localStorage localStorage.setItem("GridParam", gridDataAsString); }); </code></pre> <p>This works fine. But in the next step I load the GridParam from the localStroage and try to restore the grid.Loading the data is also no problem. In debugging mode I can see that all data are correctly loaded from the localStorage. But if I want to restore the Grid with the <code>setGridParam</code> method the grid have all default values. My code looks like the following:</p> <pre><code>$(document).ready(function () { $("#Grid").jqGrid({ /* Initialize the grid with default values */ }); var loadedGridDataAsString = localStorage.getItem("GridParam"); // Use the default value if no data exists in localStorage if (loadedGridDataAsString != null) { // Deserialize the JSON-String to an object var loadedGridData = $.evalJSON(loadedGridDataAsString); $("#Grid").jqGrid('setGridParam', loadedGridData); $("#Grid").trigger('reloadGrid'); } } </code></pre>
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