如何通过casperjs点击按钮ajax？

Question

这是我的代码。它运行正常，它访问网站，并填写zipcode确定。但我不知道为什么它不能点击按钮“GO”。我的代码有什么问题？谢谢

网站是：https://www.az.aaa.com/membership/gift-membership-form?promocode=zumz0

谢谢！

var casper = require("casper").create();
var mouse = require("mouse").create(casper);

var casper = require('casper').create({
	verbose: true,
  	logLevel: 'debug',     // debug, info, warning, error
	clientScripts: ["includes/jquery.min.js"],
	pageSettings:{
		loadImages: true,
		loadPlugins: false,
		userAgent: 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36'
	}
}
	
);

var fs = require('fs');

//var password = casper.cli.get(1);

function strip_tags(str) {
    str = str.toString();
    return str.replace(/<\/?[^>]+>/gi, '');
}

casper.start().thenOpen("https://www.az.aaa.com/membership/gift-membership-form?promocode=zumz0", function(){
	console.log("1. Access Site");
});

casper.waitForSelector('#edit-zipcode', function(){
	console.log("2. Box Zipcode Found ! ");
	this.capture('site_box_zipcode.png');
});

casper.then(function(){
	fs.write("debug_zipcode.html", this.getPageContent(), 'w');
});


casper.then(function(){
	console.log("3. Filling Form Zipcode")
	this.evaluate(function(){
		$('#edit-zipcode').attr('value', '86322');
		$('#edit-tqs1-submit').click();
		//document.getElementById("edit-zipcode").value='86322';
		//document.getElementById("edit-tqs1-submit").click();
	});
	
	//this.mouse.rightclick('button.col-xs-12 col-md-1 product-button js-product-button pull-right');
})
//


casper.then(function(){
	
	this.wait(7000);//Wait a bit so page loads (there are a lot of ajax calls and that is why we are waiting 6 seconds)
    this.capture('Afterpostzipcode.png');
    console.log("4. Finish Capture Picture");
});	



casper.then(function(){
	fs.write("debug_fl.html", this.get, 'w');
});

casper.run();