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Just listen to the mouseenter event and then display the p or button

Use css for hover

/* 1.css */
.more{display:none};
p:hover .more{display:block}

//2.js
$('p').hover(function(){
$('.more').show();
})

http://jsbin.com/tiqenecata/e...

html:
<p>

<p class="a">假如我是一個(gè)鏈接</p>
<p class="b">點(diǎn)我查看更多</p>

<p>

js (load jQuery library):

$(function(){

    $(".b").css("display","none");      //初始化隱藏按鈕
    $(".a").hover(function(){           //鼠標(biāo)移入移出函數(shù)
        $(".b").css("dispaly","block")  //移入顯示
    },function(){    
        $(".b").css("dispaly","none")   //移出隱藏
    })  

})