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JS获取url参数:如果不存在参数,自动跳转到指定页面

米小格儿 2022-03-12 阅读 74
htmli++


<div id="bgtm">
<a href='1.html?id=12&grade=0'>成绩</a>
</div>
<script>
function GetUrlParam(paraName) {
var url = document.location.toString();
var arrObj = url.split("?");

if (arrObj.length > 1) {
var arrPara = arrObj[1].split("&");
var arr;

for (var i = 0; i < arrPara.length; i++) {
arr = arrPara[i].split("=");

if (arr != null && arr[0] == paraName) {
return arr[1];
}
}
return "";
}
else {
alert('参数错误!');
window.location.href="1.html?id=12&grade=0";
}
}


console.log(GetUrlParam("grade"));

</script>



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