关闭在ZeroClipboard中不起作用 [英] Closure not working in ZeroClipboard

问题描述

我为ZeroClipBoard使用以下JS代码:

I have the following JS code for ZeroClipBoard :

onComplete: function(item) {

            var text= $(item).html();//Not working when I hover the clip
           //var text= 'Hello';// This is working when I hover the clip

            var clip = new ZeroClipboard.Client();
            clip.setHandCursor(true);

            clip.addEventListener('complete', function(client, text) {
                debugstr("Copied text to clipboard: " + text );
            });

            clip.addEventListener('mouseOver', function(client) {
                clip.setText(text);
            })

            // glue specifying our button AND its container
            clip.glue('id_clip_button', 'id_clip_container');

        },

oncomplete之上是我的一个函数，它在某些操作上被调用.我从它得到的项目是html元素. 现在在上面的代码中:

Above oncomplete is oneofmy function which is called on some action . I get item from it which is html element. Now in the above code :

        var text= $(item).html();//Not working when I hover the clip
       //var text= 'Hello';// This is working when I hover the clip

如果我注释第一行而取消注释第二行，则该剪辑正在工作，并且文本已复制到剪贴板.但是我必须在复制文本时使用该html元素的值.那么我应该怎么做呢?此时，我正在获得控制的价值

If I comment the first line and uncomment the second line the clip is working and text is getting copied to clipboard . But I have to use the value of that html element while copying the text . So how should I go with this ? I am getting the value of control at this point

var text = $(item).html();//

var text= $(item).html();//

但是当调用悬停函数时，它会丢失.我以为它将通过Closure保存.我想念什么吗?我无法在此行获得text的值:

But when the hover function is called it is lost. I was thinking that it will be preserved via Closure. Am I missing something ? I am not able to get the value of text at this line :

clip.setText(text);

当我在clip.addEventListener('mouseOver'，function(client){clip.setText(text);})里面时，我无法从外部访问任何变量

I am not able to access any variable from outside when I am inside clip.addEventListener('mouseOver', function(client) { clip.setText(text); })

推荐答案

该值不会保留在函数调用中，您需要使用$.proxy:

The value won't be preserved in the function call, you need to use a $.proxy instead:

        clip.addEventListener('mouseOver', $.proxy(function(client) {
            // "this" is now set to text
            clip.setText(this);
        }, text));

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