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POJavascript return variable from addEventListener
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  1. POJavascript return variable from addEventListener
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    copied!<pre><code> var jobj = []; var keyChartData = null; var chartData = [{ "name": "John", "points": 35654, "color": "#7F8DA9", "bullet": "0.gif" }, { "name": "Damon", "points": 65456, "color": "#FEC514", "bullet": "1.gif" }, { "name": "Patrick", "points": 45724, "color": "#DB4C3C", "bullet": "2.gif" }, { "name": "Mark", "points": 13654, "color": "#DAF0FD", "bullet": "3.gif" } { "name": "Mark", "points": 43244, "color": "#DAF0FD", "bullet": "3.gif" } { "name": "Patrick", "points": 64643, "color": "#DB4C3C", "bullet": "2.gif" }, { "name": "Patrick", "points": 73724, "color": "#DB4C3C", "bullet": "2.gif" }, { "name": "John", "points": 65672, "color": "#DB4C3C", "bullet": "2.gif" }, ]; var select = document.getElementById("selector"); var lookup = {}; var len = chartData.length; for (var i = 0; i &lt; len; i++) { var item = chartData[i]; var name = item.name; var option = document.createElement("option"); option.value = i; option.textContent = name; select.appendChild(option); }; select.addEventListener('change', function () { var selValue = select.options[select.selectedIndex].name; for (var i = 0; i &lt; len; i++) { var item = chartData[i]; var name = item.name; //alert("selValue: "+selValue+" Key: " +key); if(selValue === name){ jobj.push(JSON.stringify(chartData[i])); } } keyChartData = JSON.parse(JSON.stringify(jobj)); }) alert(keyChartData); AmCharts.ready(function () { // SERIAL CHART chart = new AmCharts.AmSerialChart(); chart.pathToImages = "http://www.amcharts.com/lib/3/images/"; chart.dataProvider = keyChartData; .......... } </code></pre> <p>This is with reference to <a href="https://stackoverflow.com/questions/20786152/javascript-json-display-data-corresponding-to-option-selected">Javascript JSON Display data corresponding to option selected</a>. which I had asked y'day. Thank you for the solution, I could solve the problem. But now, I have keyChartData declared as global variable, Now I load the JSON data depending on the selected option and store it to keyChartData, which i nedd to capture in AmCharts.ready function to plot the graph. Outsite the function the value of keyChartdata is blank, how to go about this hurdle. Kindly help.</p>
 

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