js笔记

本文主要记录本人使用js中的一些笔记

1.<a href="javascript:void(0);" onclick='add("tb1")'>

2.动态添加表单

/**

 * 动态添加上传表单

 * */

function add_upload_form(tableId, userId, upToken) {

     console.log('add_upload_form');

     upToken = "5N1L2z_at_JxxDzkht2vJMYmc72mf8Y03-5bK4xl:H_7Y-mJ4th38heNo0zs8EnDjskI=:eyJzY29wZSI6InR1b21hLXRlc3QiLCJkZWFkbGluZSI6MTM4MjY4ODY2OH0=";

     var currentMillis = new Date().getTime();

    // //105/2013-07-21/1374399378070.jpg

     var keyValue = userId + "/" + currentMillis + ".jsp";

     console.log('key:', keyValue);



    var uploadForm = document.createElement("form");

    // 一定要加入到body中！！

    document.body.appendChild(uploadForm);

    uploadForm.method = 'post';

    uploadForm.action = 'http://up.qiniu.com/';

    uploadForm.enctype = 'multipart/form-data';

    formId = formIdPrefix + (++uploadForm_id);

    console.log('function',formId);

    uploadForm.setAttribute("id",formId);

//    uploadForm.target = 'actionframe';

    // input file

    var inputFile = document.createElement("input");

    inputFile.setAttribute("name", "file");

    inputFile.setAttribute("type", "file");

    uploadForm.appendChild(inputFile);

    // key

    var key = document.createElement("input");

    key.setAttribute("name", "key");

    key.setAttribute("type", "hidden");

    key.setAttribute("value", keyValue);

    uploadForm.appendChild(key);

    //upload token

    var token = document.createElement("input");

    token.setAttribute("name", "token");

    token.setAttribute("type", "hidden");

    token.setAttribute("value", upToken);

    uploadForm.appendChild(token);

    //上传按钮

    var submitBtn = document.createElement("input"); 

    submitBtn.setAttribute("name", "upload");

    submitBtn.setAttribute("type", "submit");

    submitBtn.setAttribute("value", "上传");

    uploadForm.appendChild(submitBtn);

    

};

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 3.input type为file的上传，取消上传

<input type='file' id='file_upload_1'>

var obj = document.getElementById('file_upload_1') ;   

    obj.outerHTML=obj.outerHTML; 

View Code