使用jquery从div中拆分文本

Question

<div id="qselected">
    <div class="qitem di ui-draggable ui-draggable-handle">
        2.A computational agent is considered intelligent if it can adapt its actions to a particular setting.
    </div>
    <div class="qitem di ui-draggable ui-draggable-handle">
        4.A computational agent is considered intelligent if it can adapt its actions to a particular setting.
    </div>
</div>

ans5 = $('#qselected div').map(function(){
    return this.class;
});
for(i=0; i < ans5.length; i++)
    alert(ans5[i]);

如何从div“qselected”和“qitem”类中获取文本。 我想讲述div和div中的所有文本。从数组arr [0]到2.A计算代理被认为是智能的，如果它可以使其动作适应特定的设置。类似于arr [1]到4.A计算代理被认为是智能的，如果它可以使其行动适应特定的环境。帮助我摆脱这个问题。谢谢提前。

Answer 1

您的代码中的问题是您没有访问正确的属性。 没有属性作为class因此它必须返回undefined

您需要返回.map()中的textContent属性以及.get()以获取基本数组。

 var arr = $('#qselected .qitem').map(function(key, item){ return this.textContent.trim(); //$(this).text().trim(); }).get(); console.log(arr) 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="qselected"> <div class="qitem di ui-draggable ui-draggable-handle"> 2.A computational agent is considered intelligent if it can adapt its actions to a particular setting. </div> <div class="qitem di ui-draggable ui-draggable-handle"> 4.A computational agent is considered intelligent if it can adapt its actions to a particular setting. </div> </div> 

Answer 2

如果你希望在不使用jquery的情况下完成它

var arr = Array.prototype.slice.call(document.querySelectorAll('.qitem')).map(function(a){return a.textContent});