var regexp = /(http:\/\/|https:\/\/)((\w|=|\?|\.|\/|\&|-)+)/g;
content = content.replace(regexp, function($url){
return "<a href='" + $url + "' target='_blank'>" + $url + "</a>";
});
console.log(content);
<div id="text">我的百度https://www.baidu.com和我的东奥http://www.dongao.com地址
</div>
<script type="text/javascript">
var txt = document.getElementById('text').innerHTML;
var regexp = /(http:\/\/|https:\/\/)((\w|=|\?|\.|\/|\&|-)+)/g; //正则匹配
txt1=txt.replace(regexp,function($url){
return "<a href='" + $url + "' target='_blank'>" + $url + "</a>";
});
document.getElementById('text').innerHTML=txt1
//alert(txt.replace(regexp,"m"));
//alert(txt);
</script>