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jsonp跨域实例丨利用百度数据制作搜索页面
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Title</title>
<meta name="Author" content="Fly">
<style type='text/css'>
*{ margin:0; padding:0; font-family:Microsoft yahei,serif;}
#box{width: 300px;margin: 100px auto;}
#search{width: 298px;height: 38px;border: 1px solid #ccc;font-size: 14px;text-indent:5px;color: #222;}
#list{width: 298px;border: 1px solid #ccc;border-top: none;display: none;}
#list li{height: 25px;line-height: 25px;text-indent: 10px;font-size: 14px;list-style:none;cursor: pointer;overflow: hidden;width: 100%;}
#list li a{display: block;width: 100%;height: 100%;color: #555;text-decoration:none;}
#list li.hover{}
</style>
</head>
<body>
<div id="box">
<input type="text" id="search"><ul id="list"><!--<li>111</li>--><!--<li>222</li>--><!--<li>333</li>--><!--<li>444</li>--><!--<li>555</li>--></ul>
</div>
<script>
var oInp = document.getElementById('search');
var oList = document.getElementById('list');
var index = -1 , startVal = '';
oInp.onkeyup = function (e) {
var val = this.value;
if (val){
e = e || window.event;
var keyCode = e.keyCode;
if (keyCode === 38 || keyCode === 40){
var aLi = oList.children;
var length = aLi.length;
if (keyCode===38){
index --;
if (index<-1)index = aLi.length -1;
}else{
index ++;
if (index>length-1)index = -1;
}
for (var j=0;j<length;j++){
aLi[j].className = '';
}
if (index !== -1){
this.value = aLi[index].children[0].innerText;
aLi[index].className = 'hover';
}else{
console.log(startVal);
this.value = startVal;
}
return false;
}else if (keyCode === 13){
window.open('https://www.baidu.com/s?wd='+val , '_blank');
this.blur();
}else{
startVal = val;
addScript.call(this,val);
}
}else{
oList.innerHTML = '';
}
};
oInp.onblur = function () {
setTimeout(function () {
oList.style.display = 'none';
},200);
};
oInp.onfocus = function () {
oList.style.display = 'block';
if (this.value)addScript.call(this,this.value);
};
function addScript(val) {
var oS = document.createElement('script');
oS.src = 'https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su?wd='+ val +'&cb=fly&_='+new Date().getTime();
document.body.appendChild(oS);
oS.onload = function () {
document.body.removeChild(this);
};
}
function fly(mJson) {
var s = mJson.s;
var length = Math.min(s.length , 5);
oList.innerHTML = '';
for (var i=0;i<length;i++){
var oLi = document.createElement('li');
oLi.innerHTML = '<a href="https://www.baidu.com/s?wd='+ s[i] +'" target="_blank">' +s[i]+ '</a>';
oLi.onmouseenter = function () {
for (var j=0;j<length;j++){
this.parentNode.children[j].className = '';
}
this.className = 'hover';
};
oLi.onmouseleave = function () {
this.className = '';
};
oList.appendChild(oLi);
}
}
</script>
</body>
</html>
