我有这样的链接:
http://localhost:8162/UI/Link2.aspx?txt_temp=123abc
我想获得价值
123abc
。我遵循了这个如何在 JavaScript 中获取查询字符串值? 和
jquery 从 URL 获取查询字符串
$(document).ready(function () {
function getUrlVars() {
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for (var i = 0; i < hashes.length; i++) {
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
onload = function () {
alert(getParameterByName('txt_temp'));
alert(getUrlVars()["txt_temp"]);
}
});
但它不起作用。
假设您的 URL 包含许多参数,例如:-
"http://localhost:8162/UI/Link2.aspx?txt_temp=123abc&a=1&b=2"
然后在 js 中你可以这样做:
var url = "http://localhost:8162/UI/Link2.aspx?txt_temp=123abc&a=1&b=2"
或
var url = window.location.href
然后像这样拆分主网址:
hashes = url.split("?")[1]
//hashes 保存此输出 "txt_temp=123abc&a=1&b=2"
然后你又可以通过 & 拆分以获得单独的参数
编辑
检查这个例子:
function getUrlVars() {
var url = "http://localhost:8162/UI/Link2.aspx?txt_temp=123abc&a=1&b=2";
var vars = {};
var hashes = url.split("?")[1];
var hash = hashes.split('&');
for (var i = 0; i < hash.length; i++) {
params=hash[i].split("=");
vars[params[0]] = params[1];
}
return vars;
}
输出
getUrlVars()
Object {txt_temp: "123abc", a: "1", b: "2"}
它不起作用,因为您正在运行
onload
内部的函数,它不会在 document.ready
内部触发,因为在 document.ready
内部的代码执行时,onload
已经触发。 只需从 onload
事件中获取您的代码:
http://jsfiddle.net/whp9hnsk/1/
$(document).ready(function() {
// Remove this, this is only for testing.
history.pushState(null, null, '/UI/Link2.aspx?txt_temp=123abc');
function getUrlVars() {
var vars = [],
hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for (var i = 0; i < hashes.length; i++) {
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
// You may also place this inside of a function,
// and execute it when you desire, but `onload` is not going
// to fire by itself, when inside of document.ready
alert(getParameterByName('txt_temp'));
alert(getUrlVars()["txt_temp"]);
});
这应该让你开始:
function parseQueryStr( str, obj ) {
// Return object
obj = obj || {};
// Looping through our key/values
var keyvalues = str.split('&');
for( var i=0; i<keyvalues.length; i++ ) {
// Break apart our key/value
var sides = keyvalues[i].split( '=' );
// Valid propery name
if( sides[0] != '' ) {
// Decoding our components
sides[0] = decodeURIComponent( sides[0] );
sides[1] = decodeURIComponent( sides.splice( 1, sides.length-1 ).join( '=' ) );
// If we have an array to deal with
if( sides[0].substring( sides[0].length - 2 ) == '[]' ) {
var arrayName = sides[0].substring( 0, sides[0].length - 2 );
obj[ arrayName ] = obj[ arrayName ] || [];
obj[ arrayName ].push( sides[1] );
}
// Single property (will overwrite)
else {
obj[ sides[0] ] = sides[1];
}
}
}
// Returning the query object
return obj;
}
var href = window.location.href.split('#');
var query = href[0].split('?');
query.splice(0,1);
var get = parseQueryStr(query.join('?'));
alert( get.txt_temp );
您可以使用:
var param = new URLSearchParams(urlString).get('theParamName');
或者如果搜索当前页面:
var param = new URLSearchParams(location.search).get('theParamName');
您必须将“=”前后的所有内容切片,所以第一个答案有点不完整。这是适用于查询字符串的答案,其中也包含“=”:)喜欢:
https://localhost:5071/login?returnUrl=/writer/user?id=315&name=john
感谢用户abhi
var getUrlVars = function () {
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for (var i = 0; i < hashes.length; i++) {
hash = hashes[i].split('=');
vars.push(hash[0]); //to get name before =
vars[hash[0]] = hashes[i].slice(hashes[i].indexOf('=') + 1); //to take everything after first =
}
return vars;
}
然后得到它
var url = window.getUrlVars()["returnUrl"];
所以它也会用“=”提取“/writer/user?id=315”:)
我按照公认答案的方法用 ES6 语法写了这个 liner。
function getParam(key){
return window.location.href.split('?')[1].split('&').filter(x=>x.split('=')[0]==key)[0].split('=')[1];
}
用途:
假设当前 URL 是:https://stackoverflow.com?question=30271461
getParams('question') //30271461
interface IQueryParam {
[key: string]: string;
}
export const getParmFromUrl = () => {
const url = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
const urlParams: IQueryParam = {};
for (let i = 0; i < url.length; i++) {
const paramInfo = url[i].split('=');
urlParams[paramInfo[0]] = paramInfo[1];
}
return urlParams;
};