jQuery data()和'changeData'事件 [英] jQuery data() and 'changeData' event

问题描述

我可以将click事件添加到HTML元素，并让click事件更新$(document).data(key,value).

I can add a click event to an HTML element and have the click event update $(document).data(key,value).

然后将触发$(document).bind('changeData', function() {...})).知道这一点，找出哪个HTML元素更新$(document).data()的最佳方法是什么?

This would then trigger $(document).bind('changeData', function() {...})). Knowing this, what would be the best way to find out which HTML element updated $(document).data()?

例如:

$(document).bind('changeData', function {
  // get the anchor that set $(document).data()
});

$('a').click(function() {
  $(document).data('key', 'value');
});

推荐答案

通过点击事件获取数据:

Well for the data by click event:

$('#elementSelector').click(function(e){
    $(document).data(key, val);
});

$(document).bind('changeData', function(e){
    // e.target?
});

如果没有，请尝试在存储的数据中存储目标:

If not, try storing the target within the data stored:

$('#elementSelector').click(function(e){
    $(document).data(key, {
        val: 'value',
        target: e.target
    });
});

然后在发生更改事件时:

Then when you have the change event:

$(document).bind('changeData', function(e){
    var data = $(this).data(key);
    var target = data.target;
    var value  = data.val;
});

这篇关于jQuery data()和'changeData'事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！