This article mainly introduces the jQuery in the front-end HTML to implement the text search function and display the search-related content. It is often encountered in the project. Today I will share the example code with you. Friends who need it can refer to it. Hope it helps everyone.
When I was working on a project, I had such a requirement. After the customer information was displayed, I had to search for relevant customers and display all the relevant customer information, because I wrote all the information about a customer in one Inside p, so when displayed, the entire p is displayed. Let’s take a look at the effect first:
When I enter Wayao Village, the relevant customer information with Wayao Village will be displayed and the font of Wayao Village will be set to red , Others will not be displayed; look at the html code below:
<body>
<p class="bar bar-header-secondary" style="top:0">
<p class="searchbar">
<a class="searchbar-cancel">取消</a>
<p class="search-input">
<label class="icon icon-search" for="search"></label>
<input type="text" id="txtSearch" onChange="txtSearch()" placeholder="输入关键字...">
</p>
</p>
</p>
<p class="content" id="pMain" style="top:2.2em">
<p class="card">
<p class="card-header"><p>富民青泉假有限公司</p> <span>530124210342</span></p>
<p class="card-content">
<p class="card-content-inner">
客户经理:卢燕洲<br>
负责人:张仕城 <a href="tel:13187876969" rel="external nofollow" >12345698711</a>
<br>
地址:富民县东村镇乐在村委会乐在村张仕城
<br>
客户分档:二档
</p>
</p>
</p>
后面有n个<p class="card">这里就不重复了
</p>
</body>I use the onChange event here, which can be changed according to personal needs;
<style type="text/css">
.changestyle{color:red;font-weight:600;}
</style>
<script type="text/javascript">
function txtSearch()
{
//遍历移除b标签，防止第二次搜索bug
$(".changestyle").each(function()
{
var xx=$(this).html();
$(this).replaceWith(xx);
});
//整个客户信息p
var str=$("#pMain").html();
//文本输入框
var txt=$("#txtSearch").val();
//不为空
if($.trim(txt)!="")
{
//定义b标签样式红色加粗
var re="<b class='changestyle'>"+txt+"</b>";
//替换搜索相关的所有内容
var nn=str.replace( new RegExp(txt,"gm"),re);
//赋值
// document.getElementById("pMain").innerHTML=nn;
$("#pMain").html(nn);
//显示搜索内容相关的p
$(".card").hide().filter(":contains('"+txt+"')").show();
}
else
{
$(".card").show();
}
}
</script>In fact, the overall idea is this:
1. First search the content you want to search in html, and when you find it, replace everything with "+Searched content+";The style in changestyle is red and bold
2. Then display the p containing the entire content $(".card"). hide().filter(":contains('"+txt+"')").show(); card is the entire p containing customer information;
3. Everyone knows that this changes the original p Structure, the spring text inside becomes like this. If you don’t restore the entire p to the loading page when you input it for the second time, a bug will appear when searching.
It’s much more obvious If the two b tags are not traversed and removed, then when I search Wayao Village and search the village committee, it will not be displayed in red;
4. Key techniques I have learned: remove tags, replace all related texts with the replace method, and display the required p (filter) filter method! 
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