使用JavaScript重定向URL参数

   <p>本人从网上查找（如有雷同，不胜荣幸.），并进行了修改，简单粗暴，实现使用JavaScript重置url参数</p>    <p><strong>1、字符拼接形式</strong></p>    <pre>  <code class="language-javascript">  function setUri(para, val) {              var strNewUrl = new String();              var strUrl = new String();              var url = window.location.href;              strUrl = window.location.href;                if (strUrl.indexOf("?") != -1) {                  strUrl = strUrl.substr(strUrl.indexOf("?") + 1);   //获取参数                    if (strUrl.toLowerCase().indexOf(para.toLowerCase()) == -1) {  //如果没有找到参数,则直接赋值                      strNewUrl = url + "&" + para + "=" + val;                      window.location.href = strNewUrl;                  } else {                      var aParam = strUrl.split("&");                        for (var i = 0; i < aParam.length; i++) {                          if (aParam[i].substr(0, aParam[i].indexOf("=")).toLowerCase() == para.toLowerCase()) {                              aParam[i] = aParam[i].substr(0, aParam[i].indexOf("=")) + "=" + val;                          }                      }                      strNewUrl = url.substr(0, url.indexOf("?") + 1) + aParam.join("&");                      window.location.href = strNewUrl;                  }              } else {                  strUrl += "?" + para + "=" + val;                  window.location.href = strUrl;              }          }    View Code</code></pre>    <p><strong>2、利用正则</strong></p>    <pre>  <code class="language-javascript">     //使用正则          function setPara(para, val) {              var newpar = "";              var url = window.location.href;              var pars = location.search.substring(1);                var reg = new RegExp("(^|)" + para + "=([^&]*)(|$)");              if (reg.test(pars)) {   //有需要的参数para                    var p1 = pars.split(para)[0];   //productID=100857&count=1&                  var p2 = pars.split(para)[1];   //=75825&coupval=1.5&addressID=358&invoiceID=1245&invoiceName=jesse                    if (p2.indexOf("&") > -1) {                      var p3 = p2.split("&")[0];                      if (p3 == "=" + val + "") {                          return false;                      }                      newpar = p1 + para + '=' + val + '&' + (p2.split(p3))[1];                  } else {                      if (p1) {                          newpar = p1 + para + '=' + val;                      } else {                          newpar = para + '=' + val;                      }                  }              } else {                  if (url.indexOf("?") == -1) {                      newpar = pars +"&"+ para + "=" + val;                  } else {                      newpar = pars + "&" + para + "=" + val;                  }              }              window.location.href = location.href.split('?')[0] + "?" + newpar;          }    View Code</code></pre>    <p>调用：</p>    <pre>  <code class="language-javascript"><script>  window.onload = function () {              var btn = document.getElementById("btnClick");                btn.onclick = function () {                                            // url地址:http://localhost:54714/testuri.aspx?productID=100857&count=1&coupresId=12785&coupval=1.5&openId=12456&addressID=358&invoiceID=&invoiceName=                                       //setUri("coupresId", 0);                                          setPara("coupresId", 0);                   }           }  </script>    <input type="button" id="btnClick" value="重定义参数" />  </code></pre>    <p> </p>    <p>来自：http://www.cnblogs.com/fuguoliang/p/5972916.html</p>    <p> </p>