JavaScript输出对象的内部结构

输出JavaScript对象的内部结构常常做调试用.

一个输出所有对象属性的例子如下：

function dump_obj(myObject) {
  var s = "";
  for (var property in myObject) {
   s = s + "\n "+property +": " + myObject[property] ;
  }
  alert(s);
}

以上代码有些简陋，看个完善些的

<script language="javascript">
var MAX_DUMP_DEPTH = 10;
function dumpObj(obj, name, indent, depth) {
  if (depth > MAX_DUMP_DEPTH) {
    return indent + name + ": <Maximum Depth Reached>\n";
  }
  if (typeof obj == "object") {
    var child = null;
    var output = indent + name + "\n";
    indent += "\t";
    for (var item in obj) {
      try {
        child = obj[item];
      } catch (e) {
        child = "<Unable to Evaluate>";
      }
      if (typeof child == "object") {
        output += dumpObj(child, item, indent, depth + 1);
      } else {
        output += indent + item + ": " + child + "\n";
      }
    }
    return output;
  } else {
    return obj;
  }
}
</script>