如何访问Raphael中任何元素的id属性

发布于 2024-10-07 15:28:18 字数 463 浏览 5 评论 0原文

我正在使用 Raphael 在网站上绘制一些元素。元素包括矩形、线（路径）。我已经为路径元素提供了一个 id 并尝试在该行的 onclick 事件中访问它。但是当我对 id 发出警报时，什么都看不到。以下是代码片段

function createLine() 
{ 
  var t = paper.path("M" + xLink + " " + yLink +"L" + linkWidth + " " + linkHeight);
  t.attr('stroke-width','3');
  t.attr('id','Hello');
  t.node.onclick = processPathOnClick; 
}

function processPathOnClick() 
{
    alert($(this).attr("id"));
}

有人可以告诉我上面的代码有什么问题吗？任何指针都会有帮助。

谢谢

原文

I'm using Raphael for drawing some elements on a website. The elements include rectangle, line (path). I have given an id to the path element and trying to access it in the onclick event of that line. but when I do an alert of the id, nothing is visible. Following is the code snippet

function createLine() 
{ 
  var t = paper.path("M" + xLink + " " + yLink +"L" + linkWidth + " " + linkHeight);
  t.attr('stroke-width','3');
  t.attr('id','Hello');
  t.node.onclick = processPathOnClick; 
}

function processPathOnClick() 
{
    alert($(this).attr("id"));
}

Can anyone please tell me what is the problem with the above code. Any pointer will be helpful.

Thanks

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念﹏祤嫣 2024-10-14 15:28:18

您确定不想写 $(t.node).attr('id','Hello'); 吗？

更新：有人刚刚否决了这个答案。我确实有义务指出这种设置 id 的方式并不是特别好。你最好使用：

t.node.id = 'Hello';

我希望有一种方法可以归功于胡安·门德斯，而不是赞成他对此答案的评论。

Are you sure you don't want to write $(t.node).attr('id','Hello'); instead?

Update: someone just downvoted this answer. And I truly feel obligated to point out this way of setting the id isn't particularly good. You would be better off using:

t.node.id = 'Hello';

I wish there was a way to credit Juan Mendes, other than upvoting his comment to this answer.

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梦回梦里 2024-10-14 15:28:18

试试这个：

function createLine()  { 
    var t = paper.path("M" + xLink + " " + yLink +"L" + linkWidth + " " + linkHeight);
    t.attr('stroke-width','3');
    t.id = 'Hello';
    t.node.onclick = processPathOnClick;
}

function processPathOnClick() {
    alert($(this).id);
    alert(this.id); // This should work too...
}

基本上，您正在拉斐尔线实例变量“t”上创建一个名为“id”的新属性。在我看来，这有点像黑客攻击，但效果很好。

Try this:

function createLine()  { 
    var t = paper.path("M" + xLink + " " + yLink +"L" + linkWidth + " " + linkHeight);
    t.attr('stroke-width','3');
    t.id = 'Hello';
    t.node.onclick = processPathOnClick;
}

function processPathOnClick() {
    alert($(this).id);
    alert(this.id); // This should work too...
}

Basically you are creating a new property called "id" on your Raphael line instance variable "t". It's kind of hacking, in my opinion, but it does the trick just fine.

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素罗衫 2024-10-14 15:28:18

尝试使用 jquery 设置处理程序

function createLine() 
{ 
  var t = paper.path("M" + xLink + " " + yLink +"L" + linkWidth + " " + linkHeight);
  t.attr('stroke-width','3');
  t.attr('id','Hello');
  $(t.node).click(processPathOnClick);
}

function processPathOnClick() 
{
    alert($(this).attr("id"));
}

Try setting the handler using jquery

function createLine() 
{ 
  var t = paper.path("M" + xLink + " " + yLink +"L" + linkWidth + " " + linkHeight);
  t.attr('stroke-width','3');
  t.attr('id','Hello');
  $(t.node).click(processPathOnClick);
}

function processPathOnClick() 
{
    alert($(this).attr("id"));
}

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