Javascript对象属性的参考错误

Question

I have built an object in Javascript on the Google Apps Script engine and every time I run my script I get a reference error saying uName is not defined.

Here is the relivant code:

function DataSet()
{
  this.uName = "";
  this.dField = "";
  this.qUrl = "http://api.bfbcs.com/api/pc?players="+uName+"&fields="+dFeilds;
  this.data = "";

  this.dQuery = dQuery;
  this.execQuery = execQuery;

According to all sources I have found, I should not need to use the keyword var, and when I do include that, it throws other errors.

What could be going on?

Thanks

Answer 1

Well, yes, the variable uName isn't defined, in the snippet you posted. Neither's dQuery or execQuery , or dFeilds (spelling!). Are they coming from other code you haven't shown us?

There's a property this.uName , but object properties are a completely different thing to variables in JavaScript. Unlike Java, they don't share a namespace.

Also, you need to URL-encode parameters. eg.:

this.qUrl = "http://api.bfbcs.com/api/pc?players="+encodeURIComponent(this.uName)+"&fields="+encodeURIComponent(this.dField);

Answer 2

I am not sure what you are trying to do but I dont see your function receiving those parameters:

function DataSet(uName,dFeilds,dQuery,execQuery)
{
  this.uName = "";
  this.dFeild = "";
  this.qUrl = "http://api.bfbcs.com/api/pc?players="+uName+"&fields="+dFeilds;
  this.data = "";

  this.dQuery = dQuery;
  this.execQuery = execQuery;