How to get the script file name currently executed in the browser

Background

My colleague raised a question: How can I obtain the current file name in the Javascript file dynamically inserted in the browser?

In addition to a file name output by the server, the following three methods should be obtained in the script.

Solution

The general solution can only be used for page static scripts label introduction or single dynamic loading.

 
VaR scripts = Document. getelementsbytagname ('script'); var filename = scripts [scripts. Length-1]. SRC;
 

Dynamically insert multiple script tags:

 
Loadscript ('B. js? Param = 1') loadscript ('A. js? Param = 2') loadscript ('B. js? Param = 3') loadscript ('A. js? Param = 4')/* Output A. js >>> http: // localhost: 800/IO/a. js? Param = 4A. js> http: // localhost: 800/IO/a. js? Param = 4b. js> http: // localhost: 800/IO/a. js? Param = 4b. js> http: // localhost: 800/IO/a. js? Param = 4 */
 

Solution B

Abnormal type, can only work on Firefox:

Try {Throw new error ();} catch (exception) {console. Log (exception. filename );}
 

Solution C

My solutions and operationsSource code:

 
Requirescript ('A. js? '+ Date. now (), function (text, Src) {console. log ('text: ', text); globaleval (' (function () {\ nvar _ filename = "'+ SRC + '"; \ n' + TEXT + '\ n ;})();');})
 

Browser output:

 
<SCRIPT> (function () {VaR _ filename = "A. js? 1310971812334 "; var scripts = document. getelementsbytagname ('script'); console. log ('a. js', '>>>', scripts [scripts. length-1]. SRC); console. log (_ filename) ;;}) (); </SCRIPT>
 

Advantages: reliability, caching, deferred execution, and scalability.

Restriction: 1) variable naming is agreed as "_ filename"; 2) Same-source policy.

I also thought of this loading policy to load popular coffeescript, such:

Requirescript ('script. Coffee ', function (text, Src) {If (iscoffeescript (SRC) globaleval (coffeescript. Compile (text ));})
 

Link

Cross-origin Resource Sharing

Passing JavaScript arguments via the src attribute

Coffeescript

View or download

Https://gist.github.com/1088730