Tableau Javascript API workbook.activeSheet（）

Question

I'm probably missing something very obvious here but why does the following not write anything to the log? 我可能在这里遗漏了一些非常明显的东西，但是为什么以下内容没有在日志中写入任何内容？ (jsfiddle here - http://jsfiddle.net/hiwilson1/qk9cjuh2/ - although it's not working for me) （这里的jsfiddle- http://jsfiddle.net/hiwilson1/qk9cjuh2/-尽管它不适用于我）

<html>
<head>
<style>
#tableauViz {
    width: 1500px;
    height: 500px;
}
input[type="button"] {
    margin: 5px;
}
</style>
<script type="text/javascript" src="https://online.tableau.com/javascripts/api/tableau-2.0.0.min.js"></script>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
window.onload = function() {

    // append visualisation container
    d3.select("body").append("div").attr("id", "tableauViz")

    // function to build visualisation.
    function initializeViz() {
        var placeholderDiv = document.getElementById("tableauViz");
        var url = "http://public.tableau.com/views/WorldIndicators/GDPpercapita";
        var options = {
            width: placeholderDiv.offsetWidth,
            height: placeholderDiv.offsetHeight,
            hideTabs: false,
            hideToolbar: true,
            onFirstInteractive: function () {
                workbook = viz.getWorkbook();
                activeSheet = workbook.getActiveSheet();
            }
        };
        viz = new tableau.Viz(placeholderDiv, url, options);
    }  

    initializeViz();

    // switch worksheet function.
    function switchTab(val) {
        workbook.activateSheetAsync(val);
    }    

    d3.select("body").append("input")
        .attr("type", "button")
        .attr("value", "click me")
        .on("click", function() {switchTab("GDP per capita map")})

    console.log(workbook.activeSheet)
}
</script>
</head>

<body>

</body>
</html>

I've built the visualization and then rigged up a button to run a small function that changes worksheet. 我已经建立了可视化，然后装配了一个按钮来运行一个小的功能来更改工作表。 I can access the workbook object from within that function but there's nothing special about the function that gives it the right to access that workbook object. 我可以从该函数中访问该工作簿对象，但是该函数没有什么特别的授予它访问该工作簿对象的权限。 Why can I not also output info about the workbook object to the log? 为什么我也不能将有关工作簿对象的信息输出到日志？

The error I receive is 'Reference Error: Workbook is not defined'. 我收到的错误是“参考错误：未定义工作簿”。 If it's not defined how can the function use it?! 如果未定义，函数如何使用它？

Answer 1

Your workbook variable is not created until the onFirstInteractive callback is called, but your call to console.log() is immediately after initializing your tableau.Viz . 在调用onFirstInteractive回调之前，不会创建workbook变量，但是在初始化tableau.Viz之后立即调用console.log() 。 The act of initializing that object won't cause the callback to be called - that will happen later. 初始化该对象的行为不会导致调用回调-稍后会发生。

Depending on the reason you're calling console.log like that, it might make sense to move that call to the end of the onFirstInteractive callback. 根据您这样调用console.log的原因，将调用移到onFirstInteractive回调的末尾可能很有意义。

Tableau Javascript API workbook.activeSheet（）

问题描述

1 个解决方案

解决方案1
2 已采纳 2015-05-18 16:56:43

Tableau Javascript API workbook.activeSheet（）

问题描述

1 个解决方案

解决方案1 2 已采纳 2015-05-18 16:56:43

解决方案1
2 已采纳 2015-05-18 16:56:43