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<input id="a" value='自动获取url中带a参的值'>
<input id="b" value='自动获取url中带b参的值'>
var $_GET = (function(){
var url = window.document.location.href.toString();
var u = url.split("?");
if(typeof(u[1]) == "string"){
u = u[1].split("&");
var get = {};
for(var i in u){
var j = u[i].split("=");
get[j[0]] = j[1];
}
return get;
} else {
return {};
}
})();
var $a = document.getElementById("a");
$a.value = $_GET['a'];
var $b = document.getElementById("b");
$b.value = $_GET['b'];
var $a = document.getElementById("a");
if ("a" in $_GET)
$a.value = $_GET['a'];
var $b = document.getElementById("b");
if ("b" in $_GET)
$b.value = $_GET['b'];