javascript中的import[转自嘟嘟老窝]

(若有侵犯请及时通知，此资料只是用作学习笔记)

//******************************************************
// 包含文件 用法： $import('../include/mian.js', 'js');
//                 $import('../style/style.css', 'css');
//******************************************************
function $import(path, type){
	var i, 
      base, 
      src = "common.js", 
      scripts = document.getElementsByTagName("script"); 

 for (i = 0; i < scripts.length; i++) {
      if (scripts[i].src.match(src)) {
          base = scripts[i].src.replace(src, "");
          break;
      }
  }
 
  if (type == "css") {
      document.write("<" + "link href=\"" + base + path + "\" rel=\"stylesheet\" type=\"text/css\"></" + "link>");
  } else {
      document.write("<" + "script src=\"" + base + path + "\"></" + "script>");
  }
}


//******************************************************
// 判断类型
//******************************************************
function isAlien(a) {
  return isObject(a) && typeof a.constructor != 'function';
} 

function isArray(a) {
  return isObject(a) && a.constructor == Array;
}

function isBoolean(a) {
  return typeof a == 'boolean';
}

function isEmpty(o) {
  var i, v;
  if (isObject(o)) {
    for (i in o) {
      v = o[i];
      if (isUndefined(v) && isFunction(v)) {
        return false;
      }
    }
  }
  return true;
}

function isFunction(a) {
  return typeof a == 'function';
}

function isNull(a) {
  return typeof a == 'object' && !a;
}

function isNumber(a) {
  return typeof a == 'number' && isFinite(a);
}

function isObject(a) {
  return (a && typeof a == 'object') || isFunction(a);
}

function isString(a) {
  return typeof a == 'string';
}

function isUndefined(a) {
  return typeof a == 'undefined';
}

评论

1 楼 joshokn 2006-11-05  

下面是ACTIVEMQ是如何实现的js中import方法的

var _AMQ_INCLUDE = {
  Version: 'AMQ JS',
  script: function(libraryName) {
    document.write('<script type="text/javascript" src="'+libraryName+'"></script>');
  },
  load: function() {
    var scriptTags = document.getElementsByTagName("script");
    for(var i=0;i<scriptTags.length;i++) {
      if(scriptTags[i].src && scriptTags[i].src.match(/amq\.js$/)) {
        var path = scriptTags[i].src.replace(/amq\.js$/,'');
        this.script(path + 'prototype.js');
        this.script(path + 'behaviour.js');
        this.script(path + '_amq.js');
        // this.script(path + 'scriptaculous.js');
        break;
      }
    }
  }
}

很雷同