我可以从外部文件加载JavaScript数组吗？

Question

My app uses a lookup table that is embedded in the script. For ease of maintenance I would like to load this table from an external file. What is the best way to accomplish this? I am using the table to specify an image to be loaded on a click event.

var categoryTable = {
    "volunteer": "d3_files/images/thunderx64.png",
    "organization": "d3_files/images/cloudyDayx64.png",
    "air":"nothing"
};

Answer 1

you can make a function in other js file that return this array. load that file and call function to get this array.

Answer 2

An external .js file can contain any valid Javascript. Putting a variable assignment in it is just fine.

It will have to be a global variable for it to be visible to code in other files.

Answer 3

Take a look at jQuery getScript() Method:

Quoting from Jquery site:

Description: Load a JavaScript file from the server using a GET HTTP request, then execute it.

If your table is JS, then this should help you. However, I think that a better approach would be to rewrite the table code and give it a JSON or XML form. It is is table, then it should be adaptable to some standard form of data representation rather than some custom JS code.