上(shàng)傳圖片前本地(dì)預覽
相(xiàng)關代碼：
注意：本文(wén)件(jiàn)需要(yào)引入₽γbs框架中的(de)模态框
<!doctype html>
<html lang="en"&∞£★gt;
<head>
<meta charset="UTF-8←↓">
<title>JS本地(dìσ<)圖片預覽</title>&n✘φbsp;
<link rel="stylesheet&qu♣γβ&ot; href="./BS/css/boφ®otstrap.min.css" /σ©'≈>
<script src="./BS/js/jq♠φ★uery.min.js"></script>
<script src="./Bs/js/boo↑♣←≤tstrap.min.js"><≥δ/script>
<style>
.modal-content{
width:250px;
height:265px;
}
.modal-dialog{
width:250px;
height:265px;
}
.modal-header{
border-bottom:none;
}
#portrait{
margin-top:5px;
margin-left:10px;
}
</style>
</head>
<body>
<input type="file&quo≤↑t; name="file"&quo✔≤↔t;showPreview(this)" i∞€≈d="file" />
<p"show()" id€↕="show" data-toggle="mod₩&₩al" data-target=&≠β<↓quot;#myModal">預覽</p&πδgt;
<p"del()" id="del&qφ uot;>删除</p>
<!-- Modal -->
<div class="modal fade&quo₽×≠t; id="myModal" tabindex=&quo•∞t;-1" role="♣§Ω≤;dialog" aria-label≤₩ledby="myModalLabel" ariaα§≥-hidden="true">
<div class="modaδ☆€l-dialog">
<div class=&Ω↓∏quot;modal-content">
<div class≤÷φ="modal-header&qu•Ω→ot;>
≤α<button type="button" clφ>ass="close" data-dismiss=&q♥∞≈uot;modal" aria-hid±₩ den="true">×<↔®;/button>
∏∑¥↔;<img id="portrait" src=₩δ"">
</div☆<→>
</div±♥♣∏><!-- /.modal-content -->
</div><!-- /.modal-d¥<±ialog -->
</div><!-- /.modal -->
</body>
<script>
function showPreview↕∞(source) {
≈₩; var file = sou≠ ∏←rce.files[0]; //定義一(yī)↔★£ 個(gè)文(wén)件(jiàn)對(duì)象
&nb ∞ sp; if(window.FileReader) {
&σ≤↑♦nbsp; var≥÷¥ fr = new FileReader();
&nũbsp; fr.onloadend = function(e) {
φδ☆ if(!☆φ/image\/\w+/.test(file.type)){ &nbs♥"≥§p;
β₩φ; &n♣↑÷bsp; return false; &≤™nbsp;
& ×γ™nbsp; } ✘₽
&★∑₩nbsp; &nβ₽"bsp; // document.getElementById("porσ<trait").src = e.target.result; &×←nbsp;//e.target.result代表圖片本地(dì)路(lùα←✘)徑
&₩<nbsp; &nbsσ♥™p; src=e.target.result"";
&πβ®≠nbsp; →β; };
&nbs→p; fr.readAsDa&€←δtaURL(file);
↓∞≠&; }
}
function show(){
obj=document.getElementById("p&→ortrait");
obj.src=src;
obj.style.width="200px&↕×↕λquot;;
}
function del(){
obj=document.getElementById("portrait&q>β÷uot;);
obj.src="";
obj.style.width="×☆π®";
obj2=document.getElementById("f •←↕ile");
obj2.value="";
}
</script>
</html>
