利用js模拟表单提交

function post(URL, PARAMS) {      
    var temp = document.createElement("form");      
    temp.action = URL;      
    temp.method = "post";      
    temp.style.display = "none";      
    for (var x in PARAMS) {      
        var opt = document.createElement("textarea");      
        opt.name = x;      
        opt.value = PARAMS[x];      
        // alert(opt.name)      
        temp.appendChild(opt);      
    }      
    document.body.appendChild(temp);      
    temp.submit();      
    return temp;      
}