JavaScript重定向URL参数的两种方法小结

这篇文章主要介绍的是JavaScript重定向URL参数的两种方法,下面话不多说,直接看示例代码。

一、字符拼接形式

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;

}

}

二、利用正则

//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;

}

 调用:

<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" />

总结

以上是 JavaScript重定向URL参数的两种方法小结 的全部内容, 来源链接: utcz.com/z/340255.html

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