定时器循环从不运行

Question

全部， 我很抱歉提出这个问题的简单性，我是编程新手。我有两个函数，每个函数都会提示要加载的网址。我想用一个计时器循环让这两个函数每30秒运行一次，然后重复循环。在下面的代码中，URL加载一次，但从不初始化第二个URL。非常感谢你帮助我解决这个问题！

function initializeViz1() { 
     var placeholderDiv = document.getElementById("tableauViz1"); 

     var url1 = "https://public.tableausoftware.com/views/SCADA_SERVER_DASHBOARD/Dashboard1?:embed=y&:display_count=no"; 

     var options = { 
      width: 2000, 
      height: 1200, 
      hideTabs: true, 
      hideToolbar: false, 
      onFirstInteractive: function() { 
       workbook = viz.getWorkbook(); 
       activeSheet = workbook.getActiveSheet(); 
      } 
     }; 
     viz = new tableauSoftware.Viz(placeholderDiv, url1, options); 
    } 

    function initializeViz() { 
     var placeholderDiv = document.getElementById("tableauViz"); 
     var url2 = "https://public.tableausoftware.com/views/Book1_1719/Sheet1?%3AshowVizHome=no#1"; 
     var options = { 
      width: 2000, 
      height: 1200, 
      hideTabs: true, 
      hideToolbar: false, 
      onFirstInteractive: function() { 
       workbook = viz.getWorkbook(); 
       activeSheet = workbook.getActiveSheet(); 
      } 
     }; 
     viz = new tableauSoftware.Viz(placeholderDiv, url2, options); 
    } 


    var counter = 0; 
    var i = setInterval(function() { 
     // do your thing 
     if (counter === 0) { 
      $(initializeViz); 
     } else if (counter === 1) { 
      $(initializeViz1); 
     } 
     counter++; 
     if (counter === 2) { 
      clearInterval(i); 
     } 
    }, 15000); 

Answer 1

你可以这样

function testFunction(){ 
    //do your thing 

    setTimeout(testFunction, 30000); 
} 

testFunction(); 

相关岗位使用的setTimeout（）在这里： Call a javascript function every 5 seconds continuously