juery实现数据双向绑定
编辑时间：2019-11-08
作者：金满斗
浏览量：1573
来源：转载
js我菜
文章转自：https://blog.csdn.net/big_guo/article/details/40113309
闲话不说，上代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript" src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
</head>
<body>
<input type="text" data-bind-0=name />
<span data-bind-0="name" ></span>
<script type="text/javascript">
function DataBinder(object_id){
var pubSub = jQuery({});
var data_attr = "bind-"+object_id,
message = object_id+":change";
jQuery(document).on("change","[data-" + data_attr +"]",function(evt){
var $input = jQuery(this);
pubSub.trigger(message, [$input.attr("data-" + data_attr), $input.val()]);
});
pubSub.on(message, function(evt,prop_name,new_val){
jQuery("[data-" + data_attr + "=" + prop_name + "]").each(function(){
var $bound = jQuery(this);
if($bound.is("input,textarea,select")) {
$bound.val(new_val);
}
else{
$bound.html(new_val);
}
});
});
return pubSub;
}
function User(uid){
var binder = new DataBinder(uid),
user = {
attributes: {},
set: function(attr_name,val){
this.attributes[attr_name] = val;
binder.trigger(uid + ":change", [attr_name, val, this]);
},
get: function(attr_name){
return this.attributes[attr_name];
},
_binder: binder
};
return user;
}
var user = new User(0);
user.set("name","dengjis");
</script>
</body>
</html>
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