嗨，当值来自数据库时，我想通过java脚本 trim 左侧空间，我使用jsp标签来获取值并将这些值放入输入字段中。当值的开头出现一些空格时，我遇到问题，甚至在所有输入字段中都不会打印单个值
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<script>
function getValue() {
<jsp:useBean id="ProjectBO"
class="com.nousinfo.tutorial.employee.service.model.bo.EmployeeProjectBO"
scope="request" />
document.getElementById("empNumber").value = '<jsp:getProperty property="employeeNumber" name="ProjectBO"/>';
document.getElementById("projectCode").value = '<jsp:getProperty property="projectCode" name="ProjectBO"/>';
document.getElementById("startDate").value = '<jsp:getProperty property="startDate" name="ProjectBO"/>';
document.getElementById("endDate").value = '<jsp:getProperty property="endDate" name="ProjectBO"/>';
document.getElementById("role").value = '<jsp:getProperty property="role" name="ProjectBO"/>';
}
</script>
</head>
<body onload="getValue()">
<form id="employee" action="ProjectUpdateServlet" method="post">
<table width="1254" height="74" border="0" align="center">
<tr>
<td width="970" height="68" align="center" bgcolor="#99CCFF"><h2>
<span class="style1">Project Detail</span>
</h2></td>
<td width="274" height="68" align="center" bgcolor="#FFFFFF"><img
src="/image/Emp.jpg" width="190" height="92" /></td>
</tr>
</table>
<p>
<br />
</p>
<hr size="1" width="786">
<table width="786" border="0" align="center">
<tr>
<td><input type="hidden" name="updateStatusProject" value="M" /></td>
</tr>
<tr>
<td width="298">Employee Number:</td>
<td><input type="text" id="empNumber" name="employeeNumber" readonly="readonly" />
</td>
<tr>
<td>Project_Code:</td>
<td><input type="text" name="projectCode" id="projectCode" readonly="readonly"/>
</td>
</tr>
<tr>
<td>Start_date</td>
<td><input type="text" name="startDate" id="startDate" /></td>
</tr>
<tr>
<td>End_date</td>
<td><input type="text" name="endDate" id="endDate" /></td>
</tr>
<tr>
<td>Role</td>
<td><input type="text" name="role" id="role" /></td>
</tr>
</table>
<p> </p>
<br />
<table width="200" border="0" align="center">
<tr>
<td><center>
<input type="submit" name="submit" value="Save" onclick="self.close()"/>
</center></td>
<td><center>
<input type="button" name="cancle" value="Cancel"
onclick="self.close()">
</center></td>
</tr>
</table>
<hr size="1" width="786">
<p> </p>
</form>
</body>
</html>
最佳答案
String.prototype.trim = function() {
return this.replace(/^\s+|\s+$/g,"");
}
String.prototype.ltrim = function() {
return this.replace(/^\s+/,"");
}
String.prototype.rtrim = function() {
return this.replace(/\s+$/,"");
}
// example of using trim, ltrim, and rtrim
var myString = " hello my name is ";
alert("*"+myString.trim()+"*");
alert("*"+myString.ltrim()+"*");
alert("*"+myString.rtrim()+"*");
关于javascript - 从数据库获取值后使用java脚本 trim 左侧空格，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13874002/