jsA页面传值 B页面拿取值

法一:

A页面:

var loc = location.href;
  var n1 = loc.length;//地址的总长度
  var n2 = loc.indexOf("=");//取得=号的位置
  var id = decodeURI(loc.substr(n2+1, n1-n2));//从=号后面的内容
  alert(id);

 

B页面:

location.href="test2.html?"+"txt="+encodeURI(s.value);

 

 

法二:

function getQueryString(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) return unescape(r[2]);
    return '';
}

var cfrom = getQueryString('cfrom');