一些常见的javascript应用(入门级)

<input type ="radio" name ="sex">男&nbsp;&nbsp;<input type ="radio" name ="sex">女
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<input type ="button" value ="获取单选框的值" onclick ="a();">
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<a href ="#" οnclick="jumpUrl();">连接onclick跳转</a>&nbsp;跳转会回头顶部
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<a href ="javascript:void(0);" οnclick="jumpUrl();">连接onclick跳转</a>&nbsp;跳转不会回头顶部，但不支持IE6.0
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<a href ="###" οnclick="jumpUrl();">连接onclick跳转</a>&nbsp;跳转不会回头顶部，支持IE6.0，(获取URL:window.location.href.split("#")[0];
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<a href ="http://www.baidu.com" onmouseOver ="window.status='';return true;">隐藏连接地址</a>&nbsp;防止看到连接window.status=''
<form name ="frm" method="post" target ="_blank">
</form>
<script>
a=function(){
    var sexs =document.getElementsByName("sex");
    for( i =0;i<sexs.length;i++){
       
        if(sexs[i].checked){
            alert(1);
        }else{
            alert(2);
        }

    }
}

jumpUrl =function (){
    frm.action="javascript_base.html";
    frm.submit();

}


function paramsTest(param1,param2){
    alert(param1);
}
function paramsTest(param1){
    alert(param1+1);
}
function menuToJump(){alert(1);}

//双击滚动
var currentpos,timer;
function initial(){
    timer =setInterval("scrollwindow()",50);
}
function scrollwindow(){
    currentpos =document.body.scrollTop;
    //alert(currentpos);
    window.scroll(0,++currentpos);
    if(currentpos!=document.body.scrollTop){
        sc();
    }

}
function sc(){
    clearInterval(timer);

}
document.ondblclick =initial;
document.οnmοusedοwn=sc;

//单击停止滚动

function enterKeyTest(){
    //if(event.key==13){
        //alert(22);
    //}

}


</script>
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<input type ="button"  value =function调用就近与参无关 onclick ="paramsTest(1);">
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<a href ='###' οnclick="menuToJump('/jwsweb/userinfo/t_show_userinfo.jsp','userinfo')">李添连</a>
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<span id ="xx">aaaa</span>
<script>
var sec =9;
var time =9*1000;//
var xx=document.all.xx;

xx.innerHTML="请认真阅读注册协议("+sec+")";


function updateNum(num){
   
        if(num==(time/1000)){
       
       
        xx.innerHTML="请认真阅读注册协议";
        //alert(num);

        }else{
            var lastTime =time/1000-num;
        xx.innerHTML="请认真阅读注册协议("+lastTime+")";
        //alert(num);
        }   
   
}
//updateNum(5);

for(var b=1;b<=sec;i++){//遍历
    window.setTimeout("updateNum("+b+")",b*1000);
}
/*
function output(){
    outreg.innerHTMl="<input type ='button' value ='同意' onclick ='alert(/"同意/")'/>";

}
window.setTimeout("output()",time);//时间到
*/
//window.all.outreg.innerHTML="22";

</script>
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