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Detailed explanation of the steps to add assignment to child elements using jQuery

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Release: 2018-04-19 13:55:21
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This time I will bring you jQuery Detailed explanation of the steps for adding values ​​to sub-elements. What are the precautions for adding values ​​to sub-elements with jQuery? The following is a practical case. Let’s take a look. take a look.

##1. Define the

<p>
<span>科室:</span>
<select>
</select>
</p>
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2. Write js statements:

<script>
$(function () {
var dname = $(".dept-name-show").eq(0);//选定<select>标签
var url = "${pageContext.request.contextPath}/getDepts.do";//请求路径
$(".dept-name-show").click(function () {
$.get(
url,
function (res) {
var len = res.length;
var op = dname.children().length;
if (op < len) {
var pp = "<option>";
for (var i = 0; i < len; i++) {
dname.append(pp);
dname.children().eq(i).text(res[i].name);
}
}
}
)
})
})
</script>
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3. Write the corresponding request statement:

List<dept> deptList=null;
@RequestMapping(value = "/getDepts",method = {RequestMethod.GET})
public void getDepts(HttpServletResponse response) throws IOException {
response.setCharacterEncoding("utf-8");
response.setContentType("text/json;charset=utf-8");
if (deptList == null){
deptList = deptService.findAllDepts();
}else {
String res=JSON.toJSONString(deptList);
response.getWriter().write(res);
}
}</dept>
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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

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The above is the detailed content of Detailed explanation of the steps to add assignment to child elements using jQuery. For more information, please follow other related articles on the PHP Chinese website!

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