如何获得数字上方的星星的按键 [英] How to get keypress of the star above the numbers

问题描述

问题:如何获得数字上方的星星

QUESTION: how to get at the star above the numbers

我的 FIDDLE 当前未检测到键盘上数字行上方的*-仅*在数字小键盘上...

My FIDDLE currently does not detect the * above the number row on the keyboard - only the * on the numeric keypad...

在我的键盘上是shift-3，所以keyCode 51 + shift.不管我点击了什么，如何只测试*?

On my keyboard it is shift-3 so keyCode 51 + shift. How do I just test for * regardless of what I clicked to get it?

推荐答案

由于必须使用keypress事件.按下某个键时，此事件可能会触发多次.因此，请在按下所需键时设置一个标志，然后删除keyup上的标志.

The keypress event has to be used. This event may fire multiple times whilst a key is pressed down. So, set a flag when the desired key is pressed, and remove the flag on keyup.

function something_to_do() {
    // This function is fired when * is pressed.
    $('<div>Pressed *!</div>').appendTo('body')
}
$('body').keypress(function(e) {
    var $this = $(this);
    if (e.which === 42) { // '*'.charCodeAt(0) === 42
        if (!$this.data('rw_star_pressed')) {
            $this.data('rw_star_pressed', true);
            something_to_do();
        }
    }
}).keyup(function() {
    $(this).removeData('rw_star_pressed');
});

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