如何使用定时器settimeout、setInterval执行传递参数的函数

useFnInSetTimeout.js

function fn(isPause) {
    // isPause: Boolean; 
    if(isPause) {
      // your codes here
    } else {
    }
  }

// normally, fn will be called immediately.
setTimeout(fn(isPause), 2000);

// Here are some tricks

// Trick 1:
// This is bad. Not recommended！ Beacuse JS will call eval() in setTimtou();
window.setTimeout("fn(isPause)", 2000);

// Trick 2:
function _fn(isPause) {
    return function() {
      fn(isPause);
    }
 }

setTimeout(fn(isPause), 2000);

// Trick 3:
// Modify [Native Object] is Not recommended, either.
var preSetInterval = window.setInterval; 
window.setInterval = function(callback,timeout,param){     
    var args = Array.prototype.slice.call(arguments,2);     
    var _cb = function(){     
        callback.apply(null,args);     
    }     
    preSetInterval(_cb,timeout);     
}
window.setInterval(fn, 2000, isPause);