是否有一种通过jQuery(或不使用)检索查询字符串值的无插件方法?
如果是,怎么办?如果没有,是否有插件可以这样做?
是否有一种通过jQuery(或不使用)检索查询字符串值的无插件方法?
如果是,怎么办?如果没有,是否有插件可以这样做?
当前回答
这些都是很好的答案,但我需要一些更强大的东西,我想你们可能都想拥有我创造的东西。
这是一种简单的库方法,可以对URL参数进行剖析和操作。静态方法有以下子方法,可以在主题URL上调用:
获取主机获取路径获取哈希setHash获取参数获取查询setParam(设置参数)获取参数hasParamremoveParam(删除参数)
例子:
URLParser(url).getParam('myparam1')
var url = "http://www.example.com/folder/mypage.html?myparam1=1&myparam2=2#something";
function URLParser(u){
var path="",query="",hash="",params;
if(u.indexOf("#") > 0){
hash = u.substr(u.indexOf("#") + 1);
u = u.substr(0 , u.indexOf("#"));
}
if(u.indexOf("?") > 0){
path = u.substr(0 , u.indexOf("?"));
query = u.substr(u.indexOf("?") + 1);
params= query.split('&');
}else
path = u;
return {
getHost: function(){
var hostexp = /\/\/([\w.-]*)/;
var match = hostexp.exec(path);
if (match != null && match.length > 1)
return match[1];
return "";
},
getPath: function(){
var pathexp = /\/\/[\w.-]*(?:\/([^?]*))/;
var match = pathexp.exec(path);
if (match != null && match.length > 1)
return match[1];
return "";
},
getHash: function(){
return hash;
},
getParams: function(){
return params
},
getQuery: function(){
return query;
},
setHash: function(value){
if(query.length > 0)
query = "?" + query;
if(value.length > 0)
query = query + "#" + value;
return path + query;
},
setParam: function(name, value){
if(!params){
params= new Array();
}
params.push(name + '=' + value);
for (var i = 0; i < params.length; i++) {
if(query.length > 0)
query += "&";
query += params[i];
}
if(query.length > 0)
query = "?" + query;
if(hash.length > 0)
query = query + "#" + hash;
return path + query;
},
getParam: function(name){
if(params){
for (var i = 0; i < params.length; i++) {
var pair = params[i].split('=');
if (decodeURIComponent(pair[0]) == name)
return decodeURIComponent(pair[1]);
}
}
console.log('Query variable %s not found', name);
},
hasParam: function(name){
if(params){
for (var i = 0; i < params.length; i++) {
var pair = params[i].split('=');
if (decodeURIComponent(pair[0]) == name)
return true;
}
}
console.log('Query variable %s not found', name);
},
removeParam: function(name){
query = "";
if(params){
var newparams = new Array();
for (var i = 0;i < params.length;i++) {
var pair = params[i].split('=');
if (decodeURIComponent(pair[0]) != name)
newparams .push(params[i]);
}
params = newparams;
for (var i = 0; i < params.length; i++) {
if(query.length > 0)
query += "&";
query += params[i];
}
}
if(query.length > 0)
query = "?" + query;
if(hash.length > 0)
query = query + "#" + hash;
return path + query;
},
}
}
document.write("Host: " + URLParser(url).getHost() + '<br>');
document.write("Path: " + URLParser(url).getPath() + '<br>');
document.write("Query: " + URLParser(url).getQuery() + '<br>');
document.write("Hash: " + URLParser(url).getHash() + '<br>');
document.write("Params Array: " + URLParser(url).getParams() + '<br>');
document.write("Param: " + URLParser(url).getParam('myparam1') + '<br>');
document.write("Has Param: " + URLParser(url).hasParam('myparam1') + '<br>');
document.write(url + '<br>');
// Remove the first parameter
url = URLParser(url).removeParam('myparam1');
document.write(url + ' - Remove the first parameter<br>');
// Add a third parameter
url = URLParser(url).setParam('myparam3',3);
document.write(url + ' - Add a third parameter<br>');
// Remove the second parameter
url = URLParser(url).removeParam('myparam2');
document.write(url + ' - Remove the second parameter<br>');
// Add a hash
url = URLParser(url).setHash('newhash');
document.write(url + ' - Set Hash<br>');
// Remove the last parameter
url = URLParser(url).removeParam('myparam3');
document.write(url + ' - Remove the last parameter<br>');
// Remove a parameter that doesn't exist
url = URLParser(url).removeParam('myparam3');
document.write(url + ' - Remove a parameter that doesn\"t exist<br>');
其他回答
这是我在GitHub上的查询字符串解析代码版本。
它的前缀是jquery.*,但解析函数本身不使用jquery。它非常快,但仍然可以进行一些简单的性能优化。
它还支持URL中的列表和哈希表编码,例如:
arr[]=10&arr[]=20&arr[]=100
or
hash[key1]=hello&hash[key2]=moto&a=How%20are%20you
jQuery.toQueryParams = function(str, separator) {
separator = separator || '&'
var obj = {}
if (str.length == 0)
return obj
var c = str.substr(0,1)
var s = c=='?' || c=='#' ? str.substr(1) : str;
var a = s.split(separator)
for (var i=0; i<a.length; i++) {
var p = a[i].indexOf('=')
if (p < 0) {
obj[a[i]] = ''
continue
}
var k = decodeURIComponent(a[i].substr(0,p)),
v = decodeURIComponent(a[i].substr(p+1))
var bps = k.indexOf('[')
if (bps < 0) {
obj[k] = v
continue;
}
var bpe = k.substr(bps+1).indexOf(']')
if (bpe < 0) {
obj[k] = v
continue;
}
var bpv = k.substr(bps+1, bps+bpe-1)
var k = k.substr(0,bps)
if (bpv.length <= 0) {
if (typeof(obj[k]) != 'object') obj[k] = []
obj[k].push(v)
} else {
if (typeof(obj[k]) != 'object') obj[k] = {}
obj[k][bpv] = v
}
}
return obj;
}
这里有一个很好的小url实用程序,带有一些很酷的糖霜:
http://www.example.com/path/index.html?silly=willy#chucky=cheese
url(); // http://www.example.com/path/index.html?silly=willy#chucky=cheese
url('domain'); // example.com
url('1'); // path
url('-1'); // index.html
url('?'); // silly=willy
url('?silly'); // willy
url('?poo'); // (an empty string)
url('#'); // chucky=cheese
url('#chucky'); // cheese
url('#poo'); // (an empty string)
查看更多示例并在此处下载:https://github.com/websanova/js-url#url
我宁愿使用split()而不是Regex执行此操作:
function getUrlParams() {
var result = {};
var params = (window.location.search.split('?')[1] || '').split('&');
for(var param in params) {
if (params.hasOwnProperty(param)) {
var paramParts = params[param].split('=');
result[paramParts[0]] = decodeURIComponent(paramParts[1] || "");
}
}
return result;
}
var getUrlParameters = function (name, url) {
if (!name) {
return undefined;
}
name = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
url = url || location.search;
var regex = new RegExp('[\\?&#]' + name + '=?([^&#]*)', 'gi'), result, resultList = [];
while (result = regex.exec(url)) {
resultList.push(decodeURIComponent(result[1].replace(/\+/g, ' ')));
}
return resultList.length ? resultList.length === 1 ? resultList[0] : resultList : undefined;
};
这是JavaScript从URL获取int和String参数值的最简单和最小的函数
/* THIS FUNCTION IS TO FETCH INT PARAMETER VALUES */
function getParameterint(param) {
var val = document.URL;
var url = val.substr(val.indexOf(param))
var n=parseInt(url.replace(param+"=",""));
alert(n);
}
getParameteraint("page");
getParameteraint("pagee");
/*THIS FUNCTION IS TO FETCH STRING PARAMETER*/
function getParameterstr(param) {
var val = document.URL;
var url = val.substr(val.indexOf(param))
var n=url.replace(param+"=","");
alert(n);
}
getParameterstr("str");
来源和演示:http://bloggerplugnplay.blogspot.in/2012/08/how-to-get-url-parameter-in-javascript.html