javascript - 如何在文档准备好时触发单击事件...？

Question

单选按钮

<input name="radio-choice-t-6" class="qololbl" id="radio-choice-t-6a" value="qolo" checked="checked" type="radio">
<label for="radio-choice-t-6a" style="border: 1px solid #2d5f7c;width:90px;border-bottom-left-radius:4px;border-top-left-radius:4px;font-family:Noto Sans;">Toast</label>

$(document).ready(function (e) {

    $('.qololbl').trigger('click'); 

    $(".qololbl").click(function(){
        alert("Hi");
     });
});

如何在文档就绪时触发 qololbl 点击事件。这段代码不起作用，为什么..？提前致谢。帮助我

Answer 1

使用.click()而不是.trigger()。并将其放在事件处理程序声明之后。

$(document).ready(function (e) {

    $(".qololbl").click(function(){
        alert("Hi");
     });
     
     $('.qololbl').click();
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input name="radio-choice-t-6" class="qololbl" id="radio-choice-t-6a" value="qolo" checked="checked" type="radio">
<label for="radio-choice-t-6a" style="border: 1px solid #2d5f7c;width:90px;border-bottom-left-radius:4px;border-top-left-radius:4px;font-family:Noto Sans;">Toast</label>

替代方案(由 pratik-gaikwad 建议)

$(document).ready(function (e) {

    $(".qololbl").on('click', function(){
        alert("Hi");
     });
     
     $('.qololbl').trigger('click');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input name="radio-choice-t-6" class="qololbl" id="radio-choice-t-6a" value="qolo" checked="checked" type="radio">
<label for="radio-choice-t-6a" style="border: 1px solid #2d5f7c;width:90px;border-bottom-left-radius:4px;border-top-left-radius:4px;font-family:Noto Sans;">Toast</label>