Extjs学习手写-给函数加一个拦截器

//for test extjs function interceptor
function check(a){
	return a==='cjd';
}
function send(){
	alert("pass");
}
var fn = send.createInterceptor(check);
fn('cjd');//alert pass
//or 
var fn1 = send.createInterceptor(function(a){
	return a==='cjd1';
});
fn1('cjd1');//alert pass