d3.js timeout()用法及代碼示例

D3.js中的d3.timeout()函數用於在特定時間間隔後自動停止該函數或計時器。它與JavaScript中的setTimeOut()函數相同。

用法:

d3.timeout(callback, delay);

參數：此函數接受上述和以下描述的兩個參數：

callback:該函數是在特定延遲後停止的函數。
delay:這是該函數將被停止的時間。

返回值：此函數返回一個對象。

下麵給出了上述函數的一些示例。

範例1：沒有延遲時。

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta name="viewport" content= 
    "width=device-width, initial-scale=1.0"> 
</head> 
  
<body> 
    <!-- Fetching from CDN of D3.js -->
    <script type="text/javascript" 
        src="https://d3js.org/d3.v4.min.js"> 
    </script> 
      
    <script> 
        let delay = 0 
        let func = function (e) { 
            console.log(e); 
            console.log("It will run one time" 
                + " with delay equal ", delay); 
        } 
        var timer = d3.timeout(func, delay); 
  
        func = function (e) { 
            console.log(e); 
            console.log( 
                "It will run one time with no delay"); 
        } 
        var timer = d3.timeout(func); 
        console.log("Return Type is:", typeof timer); 
    </script> 
</body> 
  
</html>

輸出：

範例2：給出延遲時。

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta name="viewport" content= 
        "width=device-width, initial-scale=1.0"> 
</head> 
  
<body> 
    <!-- Fetching from CDN of D3.js -->
    <script type="text/javascript" 
        src="https://d3js.org/d3.v4.min.js"> 
    </script> 
      
    <script> 
        let delay = 1000 
        let func = function (e) { 
            console.log(e); 
            console.log("It will run one time" 
                + " with delay equal ", delay); 
        } 
        var timer = d3.timeout(func, delay); 
  
        func = function (e) { 
            console.log(e); 
            console.log("This will be printed first"); 
        } 
        var timer = d3.timeout(func); 
    </script> 
</body> 
  
</html>

輸出：

相關用法

注：本文由純淨天空篩選整理自tarun007大神的英文原創作品 D3.js timeout() Function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。