我有这个URL:
site.fwx?position=1&archiveid=5000&columns=5&rows=20&sorting=ModifiedTimeAsc
我需要的是能够改变'行' url参数值我指定的东西，让我们说10。如果“行”不存在，我需要将它添加到url的末尾，并添加我已经指定的值(10)。
当前回答
我只是写了一个简单的模块来处理读取和更新当前url查询参数。
使用示例:
import UrlParams from './UrlParams'
UrlParams.remove('foo') //removes all occurences of foo=?
UrlParams.set('foo', 'bar') //set all occurences of foo equal to bar
UrlParams.add('foo', 'bar2') //add bar2 to foo result: foo=bar&foo=bar2
UrlParams.get('foo') //returns bar
UrlParams.get('foo', true) //returns [bar, bar2]
下面是我的代码UrlParams.(js/ts):
class UrlParams {
/**
* Get params from current url
*
* @returns URLSearchParams
*/
static getParams(){
let url = new URL(window.location.href)
return new URLSearchParams(url.search.slice(1))
}
/**
* Update current url with params
*
* @param params URLSearchParams
*/
static update(params){
if(`${params}`){
window.history.replaceState({}, '', `${location.pathname}?${params}`)
} else {
window.history.replaceState({}, '', `${location.pathname}`)
}
}
/**
* Remove key from url query
*
* @param param string
*/
static remove(param){
let params = this.getParams()
if(params.has(param)){
params.delete(param)
this.update(params)
}
}
/**
* Add key value pair to current url
*
* @param key string
* @param value string
*/
static add(key, value){
let params = this.getParams()
params.append(key, value)
this.update(params)
}
/**
* Get value or values of key
*
* @param param string
* @param all string | string[]
*/
static get(param, all=false){
let params = this.getParams()
if(all){
return params.getAll(param)
}
return params.get(param)
}
/**
* Set value of query param
*
* @param key string
* @param value string
*/
static set(key, value){
let params = this.getParams()
params.set(key, value)
this.update(params)
}
}
export default UrlParams
export { UrlParams }
其他回答
我只是写了一个简单的模块来处理读取和更新当前url查询参数。
使用示例:
import UrlParams from './UrlParams'
UrlParams.remove('foo') //removes all occurences of foo=?
UrlParams.set('foo', 'bar') //set all occurences of foo equal to bar
UrlParams.add('foo', 'bar2') //add bar2 to foo result: foo=bar&foo=bar2
UrlParams.get('foo') //returns bar
UrlParams.get('foo', true) //returns [bar, bar2]
下面是我的代码UrlParams.(js/ts):
class UrlParams {
/**
* Get params from current url
*
* @returns URLSearchParams
*/
static getParams(){
let url = new URL(window.location.href)
return new URLSearchParams(url.search.slice(1))
}
/**
* Update current url with params
*
* @param params URLSearchParams
*/
static update(params){
if(`${params}`){
window.history.replaceState({}, '', `${location.pathname}?${params}`)
} else {
window.history.replaceState({}, '', `${location.pathname}`)
}
}
/**
* Remove key from url query
*
* @param param string
*/
static remove(param){
let params = this.getParams()
if(params.has(param)){
params.delete(param)
this.update(params)
}
}
/**
* Add key value pair to current url
*
* @param key string
* @param value string
*/
static add(key, value){
let params = this.getParams()
params.append(key, value)
this.update(params)
}
/**
* Get value or values of key
*
* @param param string
* @param all string | string[]
*/
static get(param, all=false){
let params = this.getParams()
if(all){
return params.getAll(param)
}
return params.get(param)
}
/**
* Set value of query param
*
* @param key string
* @param value string
*/
static set(key, value){
let params = this.getParams()
params.set(key, value)
this.update(params)
}
}
export default UrlParams
export { UrlParams }
我是这么做的。使用我的editParams()函数，你可以添加，删除或更改任何参数，然后使用内置的replaceState()函数更新URL:
window.history.replaceState('object or string', 'Title', 'page.html' + editParams('sorting', ModifiedTimeAsc));
// background functions below:
// add/change/remove URL parameter
// use a value of false to remove parameter
// returns a url-style string
function editParams (key, value) {
key = encodeURI(key);
var params = getSearchParameters();
if (Object.keys(params).length === 0) {
if (value !== false)
return '?' + key + '=' + encodeURI(value);
else
return '';
}
if (value !== false)
params[key] = encodeURI(value);
else
delete params[key];
if (Object.keys(params).length === 0)
return '';
return '?' + $.map(params, function (value, key) {
return key + '=' + value;
}).join('&');
}
// Get object/associative array of URL parameters
function getSearchParameters () {
var prmstr = window.location.search.substr(1);
return prmstr !== null && prmstr !== "" ? transformToAssocArray(prmstr) : {};
}
// convert parameters from url-style string to associative array
function transformToAssocArray (prmstr) {
var params = {},
prmarr = prmstr.split("&");
for (var i = 0; i < prmarr.length; i++) {
var tmparr = prmarr[i].split("=");
params[tmparr[0]] = tmparr[1];
}
return params;
}
一个可行的替代字符串操作的方法是建立一个html表单，只修改rows元素的值吗?
html就像是
<form id='myForm' target='site.fwx'>
<input type='hidden' name='position' value='1'/>
<input type='hidden' name='archiveid' value='5000'/>
<input type='hidden' name='columns' value='5'/>
<input type='hidden' name='rows' value='20'/>
<input type='hidden' name='sorting' value='ModifiedTimeAsc'/>
</form>
使用下面的JavaScript提交表单
var myForm = document.getElementById('myForm');
myForm.rows.value = yourNewValue;
myForm.submit();
可能不适合所有情况，但可能比解析URL字符串更好。
我扩展了Sujoy的代码来组成一个函数。
/**
* http://stackoverflow.com/a/10997390/11236
*/
function updateURLParameter(url, param, paramVal){
var newAdditionalURL = "";
var tempArray = url.split("?");
var baseURL = tempArray[0];
var additionalURL = tempArray[1];
var temp = "";
if (additionalURL) {
tempArray = additionalURL.split("&");
for (var i=0; i<tempArray.length; i++){
if(tempArray[i].split('=')[0] != param){
newAdditionalURL += temp + tempArray[i];
temp = "&";
}
}
}
var rows_txt = temp + "" + param + "=" + paramVal;
return baseURL + "?" + newAdditionalURL + rows_txt;
}
函数调用:
var newURL = updateURLParameter(window.location.href, 'locId', 'newLoc');
newURL = updateURLParameter(newURL, 'resId', 'newResId');
window.history.replaceState('', '', updateURLParameter(window.location.href, "param", "value"));
更新版本，也照顾到URL上的锚。
function updateURLParameter(url, param, paramVal)
{
var TheAnchor = null;
var newAdditionalURL = "";
var tempArray = url.split("?");
var baseURL = tempArray[0];
var additionalURL = tempArray[1];
var temp = "";
if (additionalURL)
{
var tmpAnchor = additionalURL.split("#");
var TheParams = tmpAnchor[0];
TheAnchor = tmpAnchor[1];
if(TheAnchor)
additionalURL = TheParams;
tempArray = additionalURL.split("&");
for (var i=0; i<tempArray.length; i++)
{
if(tempArray[i].split('=')[0] != param)
{
newAdditionalURL += temp + tempArray[i];
temp = "&";
}
}
}
else
{
var tmpAnchor = baseURL.split("#");
var TheParams = tmpAnchor[0];
TheAnchor = tmpAnchor[1];
if(TheParams)
baseURL = TheParams;
}
if(TheAnchor)
paramVal += "#" + TheAnchor;
var rows_txt = temp + "" + param + "=" + paramVal;
return baseURL + "?" + newAdditionalURL + rows_txt;
}
使用javascript URL:
var url = new URL(window.location);
(url.searchParams.has('rows') ? url.searchParams.set('rows', rows) : url.searchParams.append('rows', rows));
window.location = url;
