函数句柄jQuery事件和参数？ [英] function handle jQuery event and parameter?

问题描述

采取以下代码，

// Update button clicked
function updateEntity(e) {
    e.preventDefault();

    var name = $(this).attr("name");

    ...
    // some stuff
    ...
}

$(document).on("click", ".updateEntity", updateEntity);

目前我有这个（去图）更新我按钮点击编辑的实体。现在，它的参数特别期待一个jQuery事件。但是，我希望能够在jQuery事件之外调用此函数（最终目标：最小化代码）。像这样，

Currently I have this for (go figure) updating an entity I've editted on button click. Now, its parameter is particularly expecting a jQuery event. However, I want to also be able to call this function (end goal: to minimize code) outside of a jQuery event. Like so,

// Do an update but then redirect to prevent adding the same estimate twice.
function createEstimate(e) {
    updateEntity(e);

    var link = $(this).attr("href");
    window.location.href = link;
}

$(document).on("click", ".createEntity", createEstimate);

问题：如何调用 updateEntity 或设置该函数，以便我可以将它提供给click-event处理程序并像函数一样调用它并仍然正确使用它？如果我想实现这样的目标，这个目标是否现实还是应该以不同的方式构建？

Question: How would I go about calling updateEntity or setting the function up, so that I can supply it to the click-event handler and call it like a function and still have it used correctly? Is this goal realistic or should I be structuring this differently if I want to achieve such a goal?

（包含它并不明显，我目前的问题是在功能上致电 updateEntity（e）; $（this）成为窗口而不是点击的链接。）

(Encase it is not obvious, my current problem is that on the function call updateEntity(e); $(this) becomes window instead of the clicked link.)

推荐答案

使用 .call 设置这个正确：

updateEntity.call(this, e);

了解此 的更多信息。

Learn more about this.

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