指尖泛出的繁华
2016-09-07 16:20:36浏览 2934
function getDOM(id) {
return document.getElementById(id) document;
}
function bindEvent (id, event, fn) {
var getId = getDOM(id);
if(getId.attachEvent) {
getId.attachEvent('on' + event, fn);
} else if(getId.addEventListener) {
getId.addEventListener(event, fn, false);
}
}
var jsonpCallback = function (d) {
//处理传回数据
var d = d.AS.Results[0].Suggests;
var html = '';
for(var i = 0; i < d.length; i++) {
html += '<li>' + d[i].Txt + '</li>';
}
getDOM('search_result').innerHTML = html;
}
//动态创建script,因其带src属性可以实现跨域,不受同源策略的影响,所以使用其获得数据
function jcallback(searchText) {
// type=cb&cb=jsonpCallback,实现jsonp数据格式通过封装在函数jsonpCallback中把
// 数据传回.如果不加 type=cb 浏览器认为是json数据格式传回的,不支持!!
var url = "http://api.bing.com/qsonhs.aspx?type=cb&cb=jsonpCallback&q=" + searchText + "";
var script = document.createElement('script');
script.setAttribute('src', url);
document.getElementsByTagName('head')[0].appendChild(script);
}
//绑定输入事件
bindEvent('search_txt', 'keyup', function() {
var searchText = getDOM('search_txt').value;
//触发事件调用函数
jcallback(searchText);
var el = getDOM('search_box');
var search_list = getDOM('search_list');
search_list.style.left = getOffsetLeft(el) + 'px';
search_list.style.top = getOffsetTop(el) + 39 + 'px';
search_list.style.position = 'absolute';
search_list.style.display = 'block';
});
bindEvent(document, 'click', function () {
getDOM('search_list').style.display = 'none';
});
//定义代理函数
var delegateEvent = function (target, event, fn) {
bindEvent(document, event, function (e) {
if(e.target.nodeName == target.toUpperCase()) {
fn.call(e.target);
}
});
};
//js代理,实现点击选项跳转页面
delegateEvent('li', 'click', function () {
var keyword = this.innerHTML;
location.href = 'http://cn.bing.com/search?q=' + keyword;
})
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可以加个效果实现的页面