我想使用JavaScript将数据写入现有文件.我不想在控制台上打印它.我想实际写入数据abc.txt.我阅读了许多已回答的问题但是他们在控制台上打印的每一个问 在某些地方,他们已经给了代码,但它不起作用.所以请任何人帮助我如何实际将数据写入文件.
我引用了代码,但它不起作用:给出错误:
 Uncaught TypeError: Illegal constructor 
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在铬和
 SecurityError: The operation is insecure.
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在Mozilla上
var f = "sometextfile.txt";
writeTextFile(f, "Spoon")
writeTextFile(f, "Cheese monkey")
writeTextFile(f, "Onion")
function writeTextFile(afilename, output)
{
  var txtFile =new File(afilename);
  txtFile.writeln(output);
  txtFile.close();
}
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那么我们是否可以仅使用Javascript或NOT将数据写入文件?请帮助我提前谢谢
嗨,我正在创建一个网络聊天应用程序,我希望用户可以从桌面复制粘贴图像或直接粘贴屏幕截图,但我无法实现它.我使用以下代码:
$("#dummy").on("paste",function(event){
var items = (event.clipboardData ||   event.originalEvent.clipboardData).items;
console.log(JSON.stringify(items)); // will give you the mime types
for (index in items) {
    var item = items[index];
    if (item.kind === 'file') {
        var blob = item.getAsFile();
        var reader = new FileReader();
        reader.onload = function(event){
            console.log(event.target.result)}; // data url!
        reader.readAsDataURL(blob);
    }
}
})
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在Chrome和Firefox中使用上面的代码我在图像的情况下得到Clipboarddata undefined.我在谷歌尝试了很多链接,但无法达到目标.我也试过下面的stackoverflow 链接:使用JavaScript从剪贴板粘贴图像也是以下链接:
http://strd6.com/2011/09/html5-javascript-pasting-image-data-in-chrome/
http://codepen.io/netsi1964/pen/IoJbg
任何人都可以帮我完整的例子如何实现它?
以下是我的代码:
    <form>
        <div class="form-group loginFormGrp">
            <label class="caption">Backup Cloud</label>
            <div class="custSelect loginSelect">
            <label class="caption">Server URL</label>
                <input type="text" aria-label="Server URL" name="serverUrl" class="form-control" placeholder="example.server.com" value="">
            </div>
            <div class="form-group loginFormGrp">
                <label class="caption">Email</label>
                <input type="text" aria-label="Email" name="email" class="form-control" placeholder="user@example.com" value="">
            </div>
            <div class="loginBtnRow">
                <button tabindex="0" type="submit" class="lgBtn btn btn-primary btn-block">Continue</button>
            </div>
        </div>
    </form>
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每当画外文突出显示输入文本字段时,它会显示"您当前正在文本字段中,在Web内容中.要在此字段中输入文本,请键入.要退出Web区域,...",当我开始键入时,它什么也没说.并检查其他appilcation或网站,它读取我正在键入的内容.但在我的情况下,它不读.如果有人知道解决方案,请帮忙.
我正在使用以下代码从加密狗发送短信.它的发送成功.现在我想从加密狗读取SIM短信或未读短信,所以任何人都可以告诉我如何阅读
以下是发送短信的代码
import org.smslib.OutboundMessage;
import org.smslib.Service;
import org.smslib.modem.SerialModemGateway; 
...
private  String port = "COM4";          // Modem Port.
private  int bitRate = 9600;            // This is also optional. Leave as it is.
private  String modemName = "ZTE";      // This is optional.
private  String modemPin = "0000";      // Pin code if any have assigned to the modem.
private  String SMSC = "+919822078000"; // Message Center Number ex. Mobitel
...
SerialModemGateway gateway = new SerialModemGateway("", port, 9600, "InterCEL", "");
Service.getInstance().addGateway(gateway);
Service.getInstance().startService();
// System.out.println("center …Run Code Online (Sandbox Code Playgroud) 以下是我的Reactdata网格代码
    this._columns = [
          {
            key: 'id',
            name: 'ID',
            width: 40
          },
          {
            key: 'task',
            name: 'Title',
            width:100
          },
          {
            key: 'priority',
            name: 'Priority',
            width:100
          },
          {
            key: 'issueType',
            name: 'Issue Type',
            width:100
          },
          {
            key: 'complete',
            name: '% Complete',
            width:100
          },
          {
            key: 'startDate',
            name: 'Start Date',
            width:100
          },
          {
            key: 'completeDate',
            name: 'Expected Complete',
            width:100
          }
        ];
          render() {
        return  (
          <ReactDataGrid
            columns={this._columns}
            rowGetter={this.rowGetter}
            rowsCount={this._rows.length}
            minHeight={500}
            minColumnWidth={120} 
          />);
      }
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使用下面的React数据网格:https : //github.com/adazzle/react-data-grid
我想以百分比形式传递宽度,这是如何使用React数据网格实现的。任何帮助,将不胜感激。谢谢
    below is abc.html
    <div xmlns:xi="http://www.w3.org/2001/XInclude"
         xmlns:py="http://genshi.edgewall.org/" py:strip="True" >
            <div class="insync-bluthm-tbl-wrp">
                <div class="insync-bluthm-tbl-scroll">
                    <div class="insync-bluthm-tbl-scroll-inr">
                        <table class="insync-bluthm-tbl">
                        <thead>
                            <tr>
                                <th><div>File Name</div></th>
                            </tr>
                        </thead>
                        <tbody>
                            <input type="hidden" id="restorable_data" value="${restoreData}"/>
                            <tr>
                                <td><div>Dummy File name</div></td>
                            </tr>
                        </tbody>
                    </table>
                    </div>
                </div>
            </div>
    </div>
    below is python function
    @cherrypy.expose
    def can_restore_mds(self, *args, **kwargs):
    restoreData = {
            'abc': 'def',
            'akjshd': 'asd',
            'is_valid': 1,
    }
    restore_context = {
        'page': 'abc.html',
        'restoreData': restoreData,
    }
    html = render_page(restore_context, restore_context['page'])
    return {
        'html': html,
        'restoreData': restoreData,
    }
    return response
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“ restoreData”是一个变量,在服务器端呈现中未以正确的格式注入该变量,任何人都可以帮助您完成哪些工作吗?
我想知道如何在图像标记中加载外部图像,例如:
<div id="page4">
  <img src="https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRX1-0FwHVmDbsTFz8454Sx3fZFeQ-kO-xZ-Q6aYzMw3dCh6ybHT8TApuBPnA"/>
</div>
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我需要添加manifest.json什么?
它给出了以下错误:
Refused to load the image 'https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRX1-0FwHVmDbsTFz8454Sx3fZFeQ-kO-xZ-Q6aYzMw3dCh6ybHT8TApuBPnA' because it violates the following Content Security Policy directive: "img-src 'self' data: chrome-extension-resource:".
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