Three ways to dynamically load JS files_javascript skills

Just look at the example.
Example 1 Reload js file

Copy code The code is as follows:

function loadJs(file) {
      var head = $("head").remove("script[role='reload']");
                                                           "").attr({ role: 'reload', src: file, type: 'text/javascript' }).appendTo(head);
}

Example 2 How to reload the javascript file (give js an id), encapsulate it into a method for everyone to use:

Copy the code The code is as follows:

function reloadAbleJSFn(id,newJS)
{
var oldjs = null;
var t = null;
var oldjs = document.getElementById(id);
if(oldjs) oldjs.parentNode.removeChild(oldjs);
var scriptObj = document.createElement("script");
scriptObj.src = newJS;
scriptObj.type = "text/javascript";
scriptObj.id = id;
document.getElementsByTagName("head")[0].appendChild(scriptObj);
}

Example 3 For jquery, just use getScript directly.

Copy code The code is as follows:

< ;body>
Load