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字符串问题的javascript分配

转载 作者:行者123 更新时间:2023-11-30 17:43:30 25 4
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我在将字符串分配给变量然后返回它时遇到问题。这听起来很简单,应该是,但我完全不知道为什么会发生这种情况。我的代码:

function drawpills() {
var picid;
$.post('js/fetchdata.php', function (data) {
var clock = document.getElementById('clock');
clock.innerHTML = "<img src='images/clock/pill.png' alt='pill_image' id='pillpic" + data + "'/>";
picid = "pillpic" + data;
alert(picid); //if i run it here i get pillpic31 which is what i want
});
alert(picid); //if i run it here i get undefined which is not what i want and which is what is being returned
return picid;
}

我在相应的行上用评论强调了这个问题。提供任何帮助。

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