jQuery到AJAX请求的Javascript转换

Question

Looking to convert a jQuery snippet to javascript. Totally hitting a wall with this.

Are there any automated tools for doing this?

The reason we're converting this is because the code is used as part of a product that we're planning on injecting in the future and we can't guarantee that the site has the appropriate (or any) version of jQuery running.

EDIT: The reason we can't control the use of jQuery is that the customer will be copying and pasting this code themselves. It's highly likely that they will be non-technical and as such not willing/able to setup the appropriate version of jQuery

This is the jQuery code we're using now:

$(function() {
    $.getJSON('http://api.seedthechange.org/get/?method=getCount&str=suitjamas&jsoncallback=?', function(data) {
          treecount = csn(data[0]); 
          $('span.SeedTheChangeCount').text(treecount); 
      });
})

function csn(val){
    // convert int to comma separated number (1000 -> 1,000)
    while (/(\d+)(\d{3})/.test(val.toString())){
        val = val.toString().replace(/(\d+)(\d{3})/, '$1'+','+'$2');
    }
    return val;
}

Thanks in advance for any help or tips.

Answer 1

The best reference for what you ask is: http://youmightnotneedjquery.com/

In a browser >= IE8 is:

var request = new XMLHttpRequest();
request.open('GET', '/my/url', true);

request.onreadystatechange = function() {
  if (this.readyState === 4) {
    if (this.status >= 200 && this.status < 400) {
      // Success!
      var data = JSON.parse(this.responseText);
    } else {
      // Error :(
    }
  }
};

request.send();
request = null;

Answer 2

These are the basic points for conversion: http://code.tutsplus.com/tutorials/from-jquery-to-javascript-a-reference--net-23703

You could write an automated parser that use these rules for conversion. That should do the trick. I am not aware if someone has already done this.