使用jQuery延迟加载js文件

1. //异步加载js文件并调用函数
   
2. function delayCall(calledFunction, funcParams, jsUrl)
   
3. {
   
4.     if (eval('typeof '+calledFunction) == 'function') {
   
5.         eval(calledFunction+'(funcParams)');
   
6.     } else {
   
7.         jQuery.ajax({
   
8.             type: 'GET',
   
9.             url: jsUrl,
   
10.             data: {},
    
11.             dataType: 'script',
    
12.             cache: true,
    
13.             async: true,
    
14.             success: function () {
    
15.                 eval(calledFunction+'(funcParams)');
    
16.             }
    
17.         });
    
18.     }
    
19. }
    
20. 
    
21. //同步加载js文件
    
22. function syncLoad(checkFunction, jsUrl)
    
23. {
    
24.     if (eval('typeof '+checkFunction) != 'function') {
    
25.         jQuery.ajax({
    
26.             type: 'GET',
    
27.             url: jsUrl,
    
28.             data: {},
    
29.             dataType: 'script',
    
30.             cache: true,
    
31.             async: false,
    
32.         });
    
33.     }
    
34. }