Google JSAPI函数无法访问

Question

我正在尝试将这段 Google 图表示例代码移动到

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

现在它被放置在 Google JSAPI 脚本之后的脚本标签中并且它可以工作，就像这样：

<!--Google JSAPI-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>

<script type="text/javascript">

    google.load("visualization", "1", {packages: ["corechart"]});
    google.setOnLoadCallback(drawChart);
    function drawChart() {

        var data = google.visualization.arrayToDataTable([
            ['Task', 'Hours per Day'],
            ['Work', 11],
            ['Eat', 2],
            ['Commute', 2],
            ['Watch TV', 2],
            ['Sleep', 7]
        ]);

        var options = {
            title: question,
            backgroundColor: '#CFCFCF'
        };

        var chart = new google.visualization.PieChart(document.getElementById('SS_piechart'));

        chart.draw(data, options);
    }

</script>

这是在我的 page_tail 中，就在关闭 body 标签之前。但是一旦我将代码放入

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

我明白了

Uncaught TypeError: google.visualization.arrayToDataTable is not a function

<!--Google JSAPI-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>

<script type="text/javascript">

$(document).ready(function () {

    google.load("visualization", "1", {packages: ["corechart"]});
    google.setOnLoadCallback(drawChart);
    function drawChart() {

        var data = google.visualization.arrayToDataTable([
            ['Task', 'Hours per Day'],
            ['Work', 11],
            ['Eat', 2],
            ['Commute', 2],
            ['Watch TV', 2],
            ['Sleep', 7]
        ]);

        var options = {
            title: question,
            backgroundColor: '#CFCFCF'
        };

        var chart = new google.visualization.PieChart(document.getElementById('SS_piechart'));

        chart.draw(data, options);
    }

});

</script>

我在 $(document).ready 函数中还有一些其他代码，是否可能存在代码冲突，或者是否有明显的遗漏？

Answer 1

可以移动回调

google.setOnLoadCallback(drawChart);

到

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

或 JS 原生

document.addEventListener("DOMContentLoaded", drawChart);

Google JSAPI函数无法访问

Google JSAPI function can not be accessed

javascript

jquery

google-api

frontend