我如何在Javascript或jQuery中获得查询字符串参数

假设您有多个参数的URL，例如:-

"http://localhost:8162/UI/Link2.aspx?txt_temp=123abc&a=1&b=2"

var url = "http://localhost:8162/UI/Link2.aspx?txt_temp=123abc&a=1&b=2"

或

var url = window.location.href

然后分割主url:

hashes = url.split("?")[1]

//散列持有这个输出"txt_temp = 123 abc& a = 1, b = 2"

然后你可以按&分开来得到单独的参数

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;
}

getUrlVars()
Object {txt_temp: "123abc", a: "1", b: "2"}

它不起作用，因为你正在运行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已经触发了。把你的代码从onload事件中取出来:

$(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"]);
});

这应该可以让你开始:

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');

你必须分割"="前后的所有内容，所以第一个答案有点不完整。以下是适用于querystrings的答案，其中也包括"=":)如:

https://localhost: 5071/登录? returnUrl =/作家/用户? id = 315,名称=约翰

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;
    }

然后用

var url = window.getUrlVars()["returnUrl"];

所以它会提取"/writer/user? "Id =315" with "=" too:)

我用ES6语法编写了这一行，它遵循接受的答案的方法。

function getParam(key){
    return window.location.href.split('?')[1].split('&').filter(x=>x.split('=')[0]==key)[0].split('=')[1];
}

使用:

假设当前的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;
};