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Summary of various solutions to dynamically loading js files in javascript_javascript skills

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Release: 2016-05-16 17:14:45
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A comparison method is all added dynamically

Copy code The code is as follows:

/*
Dynamically load js v1.0 by: dum
Usage: src="webJsBase.js?load=a,b"
Note: Load js in this directory
*/
var webJsBase = {
require: function(libraryName) {
document.write('');
},
load: function(defaultLoad) {
if((typeof Prototype=='undefined')||(typeof Element == 'undefined')||(typeof Element.Methods=='undefined') )
throw ('prototype lib loading failed!');
if(typeof defaultLoad=='undefined')defaultLoad='';
var js = /webJsBase.js(?.*)?$ //;
var path = s.src.replace(js, '');
var includes = s.src.match(/?.*load=([a-zA-Z0-9_,]*)/ ; ;
});
}
};
webJsBase.load(); //This parameter can specify the js file to be loaded by default



This is the simplest method to use document.write directly after loading, as shown below.


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Copy the code


The code is as follows:

Here we use getElementsByTagName('HEAD') to dynamically create script elements


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Copy the code



Call the method, so it looks like your php include function



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Code As follows:include(baseDir "/Prototype.js");include(baseDir "/Map.js");include(baseDir "/MapEvent.js");
include(baseDir "/model/MapModel.js");
include(baseDir "/model/MapType.js");
include(baseDir "/model/Tile.js");

어떤 친구들은 ExtJs4를 사용하여 js를 동적으로 로드할 수 있다고 말했습니다. 여기서는 위의 방법만으로 js를 동적으로 로드할 수 있습니다.

따라서 이 방법을 사용하여 Js를 동적으로 로드하는 동안 기본 인터페이스의 Js 스크립트가 계속 실행되므로 비동기적으로 로드된 Js 코드는 예상한 효과를 얻지 못할 수 있습니다.

이때 Ajax를 사용하여 Js를 로드하는 것을 고려할 수 있습니다.

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