使用jQuery创建DOM元素 [英] Create DOM element with jQuery

问题描述

我有一个功能

       $(document).ready(function () {
        $("#btnhighlight").click(function () {
            var htext = $("#txthighlighttext").val();
            $("#lstCodelist option").each(function () {
                var sp = $(this).text(); 
                var sp1 = sp.split(' ');
                $.each(sp1, function (i, l) {
                    if (l == htext) {
                        var boldText = "<div style=\"background-color: yellow; display: inline; font-weight: bold;\">" + htext + "</div>";
                        $(document).append(boldText);
                    }
                });
            });
        });
    });

我更新了代码，但没有运气. 在此代码中，我需要创建一个具有DOM元素的l来将黄色应用到该颜色.

I updated the code but no luck. Here in this code I need to create a l has a DOM element to apply color yellow to that.

请问任何人都可以帮助我如何创建一个dom元素.

please can any body help me out how to create a dom element.

谢谢

推荐答案

我不明白l在当前代码中的位置.无论如何，您可以使用jQuery创建一个DOM元素，如下所示:var myel = $('<div class="someclass"></div>').然后，您可以使用.appendTo()，.after()等功能将myel附加到DOM中的任意位置.

I didn't understand where does l is in your current code. Anyway, you can create a DOM element with jQuery like this: var myel = $('<div class="someclass"></div>'). Then you can append myel to wherever you want in the DOM using function like .appendTo(), .after(), etc.

编辑

您似乎正在尝试突出显示<option>元素内的某些单词.我怀疑这是否适用于所有浏览器，因为表单元素在CSS方面有些棘手.您可以尝试以下操作(未经测试):

You seem to be trying to highlight some words inside an <option> element. I have doubts if that is going to work on all browsers, since form elements are a little tricky when it comes to CSS. You can try something like this (untested):

$(document).ready(function () {
    $("#btnhighlight").click(function () {
        var htext = $("#txthighlighttext").val();
        $("#lstCodelist option").each(function () {
            var sp = $(this).text();
                var re = new RegExp("\\b" + htext + "\\b")
                sp = sp.replace(re, '<span class="highlighted">$1</span>', "gi");
                $(this).html(sp);
        });
    });
});

您还需要在页面上添加一些CSS，以定义.highlighted

You also need some CSS on your page, defining the style for .highlighted

聊天后更新

我可以使用<p>而不是<option>来解决表单元素样式的问题:

I got something working using a <p> instead of <option>, to rule out the problem of form element styling:

http://jsfiddle.net/GTydh/3/

更新后的js(以防删除小提琴):

The updated js (in case fiddle is deleted):

$(document).ready(function () {
    $("#btnhighlight").click(function () {
        var htext = $("#txthighlighttext").val();
        //$("#lstCodelist option").each(function () {
        $("p").each(function () {
            var sp = $(this).text();
            var re = new RegExp("\\b(" + htext + ")\\b")
            var sOpen = "<span class='highlight'>";
            var sClose = "</span>";
            var newhtml = sp.replace(re, sOpen + "$1" + sClose, "gi");
            $(this).html(newhtml);
        });
    });
});

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