Google Charts API使用$（document）.ready方法显示空白屏幕

时间：2011-03-04 18:06:58

标签： jquery google-visualization jsapi

我有几个使用Google Charts API实例化各种图表的功能。

当我在没有jQuery的$(document).ready方法的情况下调用它们时，一切正常。但是用这种方法，我看着空白屏幕。

为什么？

<script type="text/javascript" src = "http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.js" charset="utf-8"></script>
<script type="text/javascript" src = "http://www.google.com/jsapi" charset="utf-8"></script>
function drawColumnChart1(){..some code..}
function drawColumnChart2(){..some code..}
function drawGeoChart(){.some code..}

//This works fine.
google.load("visualization", "1", {packages:["piechart", "corechart", "geomap"]});
google.setOnLoadCallback(window.drawColumnChart1);
google.setOnLoadCallback(window.drawColumnChart2);
google.setOnLoadCallback(window.drawGeoChart);



//This doesn't work
$(document).ready(function(){
    google.load("visualization", "1", {packages:["piechart", "corechart", "geomap"]});
    google.setOnLoadCallback(window.drawColumnChart1);
    google.setOnLoadCallback(window.drawColumnChart2);
    google.setOnLoadCallback(window.drawGeoChart);
});

更新 这是我在Firebug中遇到的错误：

uncaught exception: [Exception... "Could not convert JavaScript argument"  nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)"  location: "JS frame :: http://www.google.com/jsapi :: Q :: line 20"  data: no]
http://www.google.com/jsapi
Line 22

9 个答案:

答案 0 :(得分：20)

google.setOnLoadCallback with jQuery $(document).ready(), is it OK to mix?

可能是最接近的答案，Ryan Wheale对以下内容的回答也可能有所帮助。

Is it ok to use google.setOnLoadCallback multiple times?

答案 1 :(得分：14)

根据google可视化文档，您需要将可视化包之前加载到onload或jquery ready。我建议在jsapi脚本引用后立即加载，如下所示。

否则你会得到1）谷歌没有定义（参考错误）或2）如果使用ajax可能是一个空白的响应＆amp;空白页面没有错误。

加载序列（使用您的示例）

<script type="text/javascript" src = "http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.js" charset="utf-8"></script>
<script type="text/javascript" src = "http://www.google.com/jsapi" charset="utf-8"></script>
<script type="text/javascript">
    google.load("visualization", "1", {packages:["piechart", "corechart", "geomap"]});
</script>

$(document).ready(function(){
    google.setOnLoadCallback(window.drawColumnChart1);
    google.setOnLoadCallback(window.drawColumnChart2);
    google.setOnLoadCallback(window.drawGeoChart);
});

答案 2 :(得分：5)

这是我正在使用的范例。设置google.load方法的回调，并且根本不使用google.setOnLoadCallback（不需要AFAIK）。

MyChart.prototype.render = function() {
    var self = this;
    google.load("visualization", 
                "1", 
                { callback: function() { self.visualize(); }, 
                  packages: ["corechart"] }
               );
}

MyChart.prototype.visualize = function() {

    var data = google.visualization.arrayToDataTable(
    [
        ['Year', 'Sales', 'Expenses'],  
        ['2004',  1000,      400],
        ['2005',  1170,      460],
        ['2006',  660,       1120],
        ['2007',  1030,      540]   
    ]);

    var options = {
        title: 'Company Performance',
        hAxis: {title: 'Year', titleTextStyle: {color: 'red'}}
    };

    var chart = new google.visualization.ColumnChart(document.getElementById("mychart_div"));    
    chart.draw(data, options);
}

答案 3 :(得分：1)

嗨，这个解决方案对我不起作用，显然（我猜我不确定）当你在jquery对象中调用它时谷歌库有一些范围问题，所以解决方案非常简单（虽然得到了它）并非如此简单：s）定义一个全局变量并分配谷歌图书馆：

var localGoogle = google;

看起来很滑稽吧:)）然后使用你定义的变量来调用setOnCallback，它对我有用，我希望它对你有用.. 

$(document).ready(function(){
    localGoogle.setOnLoadCallback(window.drawColumnChart1);
}

答案 4 :(得分：0)

对于备用解决方案，您可以使用“自动加载”在脚本标记中包含所需的包。这消除了对“google.setOnLoadCallback”的需求。

有关详细信息，请参阅https://developers.google.com/loader/#AutoLoading。

因此，您可以像通常的jquery文档就绪事件那样执行所有操作。

还有一个向导可以为您设置URL，但目前链接已损坏。无论如何，这是：http://code.google.com/apis/loader/autoloader-wizard.html

答案 5 :(得分：0)

你必须打电话 https://www.google.com/jsapi 代替 http://www.google.com/jsapi

祝你好运

答案 6 :(得分：0)

这对我有用：

google.load("visualization", "1", {packages:["corechart"],   
        callback:function(){drawChart();}});
        //google.setOnLoadCallback(drawChart);
        function drawChart() {
        console.log("enter draw");
              var data = google.visualization.arrayToDataTable([
   ['Year', 'value', { role: 'style' } ],
   ['2010', 10, ' color: gray'],
   ['2010', 200, 'color: #76A7FA'],
   ['2020', 16, 'opacity: 0.2'],
   ['2040', 22, 'stroke-color: #703593; stroke-width: 4; fill-color: #C5A5CF'],
   ['2040', 28, 'stroke-color: #871B47; stroke-opacity: 0.6; stroke-width: 8;  
     fill-color: #BC5679; fill-opacity: 0.2']
   ]);
              var view = new google.visualization.DataView(data);

              var options = {
                title: 'Company Performance',
                tooltip: {isHtml: false},
                legend: 'none',
              };

              var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));

              chart.draw(view, options);

        }

演示：jsfiddle

答案 7 :(得分：0)

            <!DOCTYPE html>
            <html>
            <head>
            <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
            <script type="text/javascript" src="https://www.google.com/jsapi"></script>
            <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
            <script type="text/javascript">

            google.load("visualization", "1", {packages:["corechart"]});
            function drawChart(gtitle,glabel,gwidth,gheight,gtype,gstart,gend,gid) {

                $.ajax({
                        url: "http://localhost/reporte/response.php",
                                type: "GET",
                                dataType: "JSON",
                                cache: false,
                                async: false,
                                data: {start:gstart,end:gend,id:gid},
                                success: function(data) {
                                    var len = 0;
                                    if (data.length)
                                    {
                                    len = data.length;
                                    }

                                    if(len > 0)
                                    {
                                    dataarray = [[gtitle,glabel]];
                                        for (var i = 0; i< len; i++) {
                                            dataarray.push([data[i].label,data[i].value]);
                                        }
                                    }
                                    else if(len==0)
                                    {

                                    }
                                },
                                error:function(data) 
                                {


                                }
                        });

                    var values = new google.visualization.arrayToDataTable(dataarray);
                    var options = {title: gtitle,width:gwidth,height:gheight};

                            switch(gtype){
                                case 'PieChart':
                                    var chart = new google.visualization.PieChart(document.getElementById('chart'));
                                    break;
                                case 'LineChart':
                                    var chart = new google.visualization.LineChart(document.getElementById('chart'));
                                    break;
                                case 'ColumnChart':
                                    var chart = new google.visualization.ColumnChart(document.getElementById('chart'));
                                    break;
                                case 'AreaChart':
                                    var chart = new google.visualization.ColumnChart(document.getElementById('chart'));
                                    break;
                            }

                    chart.draw(values, options);


            }






            $(document).ready(function(){
            //drawChart('Titulo del Grafico','Tickets',800,800,'PieChart',20141001,20141010,'procedure1');
            //drawChart('Titulo del Grafico','Tickets',400,400,'ColumnChart',20141001,20141010,'procedure2');
            //drawChart('Titulo del Grafico','Tickets',400,400,'LineChart',20141001,20141010,'procedure3');
            drawChart('Titulo del Grafico','Tickets',600,400,'AreaChart',20141001,20141010,'procedure4');
            });

            </script>
            </head>
            <body>

            <div id="chart"></div>

            </body>
            </html>

答案 8 :(得分：-1)

尝试关闭对ready的调用？

$(document).ready(function(){
    ...
});
^^^
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