Javascript 修改jQuery extend以在对象内推送数组项,但扩展其他对象
我想这一定是个常见的问题,但似乎找不到解决办法。 使用JSON配置文件扩展包含对象和数组的jQuery对象 对于对象和简单属性,我想覆盖(正如Javascript 修改jQuery extend以在对象内推送数组项,但扩展其他对象,javascript,jquery,extend,Javascript,Jquery,Extend,我想这一定是个常见的问题,但似乎找不到解决办法。 使用JSON配置文件扩展包含对象和数组的jQuery对象 对于对象和简单属性,我想覆盖(正如extend所做的那样) 对于阵列,可能存在或不存在项 当前,数组只覆盖第一个元素 var sourceObj = {propterty:"change Me",anArray:[{name:"first"},{name:"second"}]}, configJSON = '{"propterty":"New Val","anArray":[{"n
extend
所做的那样)
对于阵列,可能存在或不存在项
当前,数组只覆盖第一个元素
var sourceObj = {propterty:"change Me",anArray:[{name:"first"},{name:"second"}]},
configJSON = '{"propterty":"New Val","anArray":[{"name":"third"}]}',
configObj = JSON.parse(configJSON);
$.extend(true,sourceObj,configObj);
这将返回:
{propterty:"New Val" , anArray:[{name:"third"},{name:"second"}}
我可以得到:
{propterty:"New Val",anArray:[{name:"first"},{name:"second"},{name:"third"}]}
同时还允许更新“第一”和“第二”对象
是否可以/应该修改extend
以比较数组项,并根据某些规则或设置属性值(如“name”)进行扩展或添加
谢谢你的建议和指点。我使用了这个解决方案
修改自也修改自
需要isDOMNode()
我刚刚在数组上添加了jquery合并(是的,我也觉得脏了),其中的重复项在合并后需要清理。
extend的Jquery源代码做了一些非常类似的事情,但我发现这更具可读性
function mergeRecursive() {
// _mergeRecursive does the actual job with two arguments.
var _mergeRecursive = function (dst, src) {
if ( isDOMNode(src) || typeof src!=='object' || src===null) {
return dst;
}
for ( var p in src ) {
//my added bit here - [SB]
if ($.isArray(src[p])){
$.merge(dst[p],src[p]);
var dupes = {},
singles = [];
$.each( dst[p], function(i, el) {
if ((dupes[el.name] > -1) && (el.name)) {
$.extend(singles[dupes[el.name]],el);
}else{
if (el.name ){
dupes[el.name] = i;
}
singles.push(el);
}
});
dst[p] = singles;
}
continue;
}
//the rest is original - [SB]
if( !src.hasOwnProperty(p) ) continue;
if ( src[p]===undefined ) continue;
if ( typeof src[p]!=='object' || src[p]===null) {
dst[p] = src[p];
} else if ( typeof dst[p]!=='object' || dst[p]===null ) {
dst[p] = _mergeRecursive(src[p].constructor===Array ? [] : {}, src[p]);
} else {
_mergeRecursive(dst[p], src[p]);
}
}
return dst;
}
// Loop through arguments and merge them into the first argument.
var out = arguments[0];
if ( typeof out!=='object' || out===null) return out;
for ( var i=1, il=arguments.length; i<il; i++ ) {
_mergeRecursive(out, arguments[i]);
}
return out;
}
函数mergeRecursive(){
//\u mergeRecursive使用两个参数执行实际工作。
var _mergeRecursive=函数(dst,src){
if(isDOMNode(src)| | typeof src!='object'| | src===null){
返回dst;
}
用于(src中的var p){
//我在这里加了一点-[SB]
如果($.isArray(src[p])){
$.merge(dst[p],src[p]);
var dupes={},
单打=[];
$。每个(dst[p],功能(i,el){
如果((重复[el.name]>-1)和&(el.name)){
$.extend(单件[dupes[el.name]],el);
}否则{
如果(el.name){
重复[el.name]=i;
}
单打。推(el);
}
});
dst[p]=单打;
}
继续;
}
//其余的是原创的-[SB]
如果(!src.hasOwnProperty(p))继续;
如果(src[p]==未定义)继续;
if(类型src[p]!='object'| | src[p]==null){
dst[p]=src[p];
}else if(dst[p]!='object'| | dst[p]==null的类型){
dst[p]=_mergeRecursive(src[p]。构造函数===数组?[]:{},src[p]);
}否则{
_合并递归(dst[p],src[p]);
}
}
返回dst;
}
//循环遍历参数并将它们合并到第一个参数中。
var out=参数[0];
如果(typeof out!=“object”| out==null)返回out;
对于(var i=1,il=arguments.length;i来说,使用
结果是:
targetObj = {
customerId: "123",
customerName: "John",
orders: [
"item1", "item2", "item3", "item4"
]
}
我知道这很旧,但我找到了这篇文章并使用了上面的Steve Blacks代码,但发现了一些bug:
在isArray部分的“continue”之前还有一个额外的“}”
如果源根本没有数组,它将抛出
错误,所以我将其添加到isArray部分
if ( !dst[p] ) {
dst[p] = src[p];
continue;
}
因此,完成的代码如下所示:
function isDOMNode(v) {
if ( v===null ) return false;
if ( typeof v!=='object' ) return false;
if ( !('nodeName' in v) ) return false;
var nn = v.nodeName;
try {
v.nodeName = 'is readonly?';
} catch (e) {
return true;
}
if ( v.nodeName===nn ) return true;
v.nodeName = nn;
return false;
}
function mergeRecursive() {
// _mergeRecursive does the actual job with two arguments.
var _mergeRecursive = function (dst, src) {
if ( isDOMNode(src) || typeof src!=='object' || src===null) {
return dst;
}
for ( var p in src ) {
if ($.isArray(src[p])) {
if ( !dst[p] ) {
dst[p] = src[p];
continue;
}
$.merge(dst[p],src[p]);
var dupes = {}, singles = [];
$.each( dst[p], function(i, el) {
if ((dupes[el.name] > -1) && (el.name)) {
$.extend(singles[dupes[el.name]],el);
} else {
if (el.name) {
dupes[el.name] = i;
}
singles.push(el);
}
});
dst[p] = singles;
continue;
}
if ( !src.hasOwnProperty(p) ) continue;
if ( src[p]===undefined ) continue;
if ( typeof src[p]!=='object' || src[p]===null) {
dst[p] = src[p];
} else if ( typeof dst[p]!=='object' || dst[p]===null ) {
dst[p] = _mergeRecursive(src[p].constructor===Array ? [] : {}, src[p]);
} else {
_mergeRecursive(dst[p], src[p]);
}
}
return dst;
}
// Loop through arguments and merge them into the first argument.
var out = arguments[0];
if ( typeof out!=='object' || out===null) return out;
for ( var i=1, il=arguments.length; i<il; i++ ) {
_mergeRecursive(out, arguments[i]);
}
return out;
}
功能isDOMNode(v){
如果(v==null)返回false;
if(typeof v!=“object”)返回false;
如果(!('nodeName'在v中))返回false;
var nn=v.nodeName;
试一试{
v、 nodeName='是否为只读?';
}捕获(e){
返回true;
}
if(v.nodeName==nn)返回true;
v、 nodeName=nn;
返回false;
}
函数mergeRecursive(){
//\u mergeRecursive使用两个参数执行实际工作。
var _mergeRecursive=函数(dst,src){
if(isDOMNode(src)| | typeof src!='object'| | src===null){
返回dst;
}
用于(src中的var p){
如果($.isArray(src[p])){
如果(!dst[p]){
dst[p]=src[p];
继续;
}
$.merge(dst[p],src[p]);
var dupes={},singles=[];
$。每个(dst[p],功能(i,el){
如果((重复[el.name]>-1)和&(el.name)){
$.extend(单件[dupes[el.name]],el);
}否则{
如果(el.name){
重复[el.name]=i;
}
单打。推(el);
}
});
dst[p]=单打;
继续;
}
如果(!src.hasOwnProperty(p))继续;
如果(src[p]==未定义)继续;
if(类型src[p]!='object'| | src[p]==null){
dst[p]=src[p];
}else if(dst[p]!='object'| | dst[p]==null的类型){
dst[p]=_mergeRecursive(src[p]。构造函数===数组?[]:{},src[p]);
}否则{
_合并递归(dst[p],src[p]);
}
}
返回dst;
}
//循环遍历参数并将它们合并到第一个参数中。
var out=参数[0];
如果(typeof out!=“object”| out==null)返回out;
对于(var i=1,il=arguments.length;i
var jsonResult={};
var json1=
{
“财产”:
{
“街道地址”:{“类型”:“字符串”},
“城市”:{“类型”:“字符串”},
“状态”:{“类型”:“字符串”}
},
“必需”:[“街道地址”、“城市”、“州”]
};
var json2=
{
“财产”:
{
“国家”:{“类型”:“字符串”},
“国家/地区拨号代码”:{“类型”:“整数”},
“country short”:{“type”:“string”}
},
“必填项”:[“国家”、“国家拨码”、“国家短路”]
};
$.extendext(true,'extend',jsonResult,json1,json2);
log(JSON.stringify(jsonResult));
/*输出->
{“财产”:
{“街道地址”:{“类型”:“字符串”},
“城市”:{“类型”:“字符串”},
“状态”:{“类型”:“字符串”},
“国家”:{“类型”:“字符串”},
“国家/地区拨号代码”:{“类型”:“整数”},
“country short”:{“type”:“string”}
},
“必填项”:[“街道地址”、“城市”、“州”、“国家”、“国家拨码”、“国家简称”]
}
*/
这似乎
if ( !dst[p] ) {
dst[p] = src[p];
continue;
}
function isDOMNode(v) {
if ( v===null ) return false;
if ( typeof v!=='object' ) return false;
if ( !('nodeName' in v) ) return false;
var nn = v.nodeName;
try {
v.nodeName = 'is readonly?';
} catch (e) {
return true;
}
if ( v.nodeName===nn ) return true;
v.nodeName = nn;
return false;
}
function mergeRecursive() {
// _mergeRecursive does the actual job with two arguments.
var _mergeRecursive = function (dst, src) {
if ( isDOMNode(src) || typeof src!=='object' || src===null) {
return dst;
}
for ( var p in src ) {
if ($.isArray(src[p])) {
if ( !dst[p] ) {
dst[p] = src[p];
continue;
}
$.merge(dst[p],src[p]);
var dupes = {}, singles = [];
$.each( dst[p], function(i, el) {
if ((dupes[el.name] > -1) && (el.name)) {
$.extend(singles[dupes[el.name]],el);
} else {
if (el.name) {
dupes[el.name] = i;
}
singles.push(el);
}
});
dst[p] = singles;
continue;
}
if ( !src.hasOwnProperty(p) ) continue;
if ( src[p]===undefined ) continue;
if ( typeof src[p]!=='object' || src[p]===null) {
dst[p] = src[p];
} else if ( typeof dst[p]!=='object' || dst[p]===null ) {
dst[p] = _mergeRecursive(src[p].constructor===Array ? [] : {}, src[p]);
} else {
_mergeRecursive(dst[p], src[p]);
}
}
return dst;
}
// Loop through arguments and merge them into the first argument.
var out = arguments[0];
if ( typeof out!=='object' || out===null) return out;
for ( var i=1, il=arguments.length; i<il; i++ ) {
_mergeRecursive(out, arguments[i]);
}
return out;
}
<html>
<head>
<script type="text/javascript" src="./jquery-2.1.3.js"></script> <!-- for json extend / merge -->
<script type="text/javascript" src="./jQuery.extendext.min.js"></script> <!-- for json extend / merge - with array extend (instead of array overwrite) - https://github.com/mistic100/jQuery.extendext -->
<script>
var jsonResult = {};
var json1 =
{
"properties":
{
"street_address": { "type": "string" },
"city": { "type": "string" },
"state": { "type": "string" }
},
"required": ["street_address", "city", "state"]
};
var json2 =
{
"properties":
{
"country": { "type": "string" },
"country-dial-code": { "type": "integer" },
"country-short": { "type": "string" }
},
"required": ["country", "country-dial-code", "country-short"]
};
$.extendext(true, 'extend', jsonResult, json1, json2);
console.log(JSON.stringify(jsonResult));
/* output ->
{ "properties":
{ "street_address":{"type":"string"},
"city":{"type":"string"},
"state":{"type":"string"},
"country":{"type":"string"},
"country-dial-code":{"type":"integer"},
"country-short":{"type":"string"}
},
"required":["street_address","city","state","country","country-dial-code","country-short"]
}
*/
</script>
</head>
<body>
</body>
</html>