新浪短链接生成js版

shorten.js

var url_shorten = "http://api.weibo.com/2/short_url/shorten.json";

function ltrim(str){ //删除左边的空格
    return str.replace(/(^\s*)/g,"");
}
function rtrim(str){ //删除右边的空格
    return str.replace(/(\s*$)/g,"");
}

function trim(str){ //删除左右两端的空格
    return str.replace(/(^\s*)|(\s*$)/g, "");
}

function checkUrl(url){
	data=url.match(/(http|https):\/\/.+/);
	if(!data||!url) {
		return false;
	}
	return true;
} 

function getShortenUrl() {
	var url_long = $("#url_long").val();
	if(trim(url_long)==""){
		alert("请先输入网址！");
		return false;
	}
	if(url_long.indexOf("http://")==-1&&url_long.indexOf("https://")==-1){
		url_long = "http://"+url_long;
	}
	if(!checkUrl(url_long)){
		alert("请输入正确网址！");
	}
	var url = url_shorten + "?source=1681459862&url_long="
			+ encodeURIComponent(url_long) + "&callback=?";
	return url;
};
/*
 * {"urls":[{"result":true,"url_short":"http://t.cn/zjrQFOs","url_long":"http://lmbj.net/","type":0}]}
 */
function getShorten() {
	var url = getShortenUrl();
	$.getJSON(url, function(data) {
		/*
		alert(data.data.urls[0].url_short);
		var urls = data.data.urls;
		for ( var i = 0; i < urls.length; i++) {
			alert(urls[i].result);
			alert(urls[i].url_short);
			alert(urls[i].url_long);
			alert(urls[i].type);
		}
		*/
		$("#result").html(data.data.urls[0].url_short);
	});
}