Ext.each Ext.query , foreach

  var people = ['Bill', 'Saul', 'Gaius'];

 

//using each to detect Cylons:

 var f=function (person, index)

{

    var cylon = (index + 1) % 2 == 0; //every second man is a toaster

    alert(person + (cylon ? ' is ' : ' is not ') + 'a fraking cylon');

}

Ext.each(people,f);

Ext.query

//清空form checkbox输入框值
	Ext.each(Ext.query("form input[type='checkbox'][name^=mailTargetConfig]"),function(ckd, index){ckd.checked=false});
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Ext.query("form input[type='checkbox'][name^=mailTargetConfig]").forEach(function(item,index,items){item.checked=false});

Extjs学习笔记--（四，基本函数介绍）
http://www.cnblogs.com/anbylau2130/p/3581755.html