由于if-else语句,无法执行JavaScript函数
我正在开发一个代码,其中服务从数据库进入由于if-else语句,无法执行JavaScript函数,javascript,jquery,Javascript,Jquery,我正在开发一个代码,其中服务从数据库进入标记 当前只有少数服务处于活动状态,如果用户选择了一项服务,并且该服务处于活动状态,则继续,如果不是,则应显示一条警报消息 我不知道为什么这函数验证()没有得到执行。 任何帮助都将不胜感激 以下是我正在处理的代码: <script language="javascript"> function validation() { var category = document.getElementById("category"
标记
当前只有少数服务处于活动状态,如果用户选择了一项服务,并且该服务处于活动状态,则继续,如果不是,则应显示一条警报消息
我不知道为什么这函数验证()
没有得到执行。
任何帮助都将不胜感激
以下是我正在处理的代码:
<script language="javascript">
function validation() {
var category = document.getElementById("category").value;
category = category.trim();
if (category == "") {
alert("Please Select Category.");
return;
} else {
var limiter = ["Electrician", "Photographer", "Printing Press", "Website Designer", "Web developer", "DJ Music", "Coaching Classes", "Civil Contractor", "Computer Hardware Services"];
var limiter_count = limiter.length;
for (var i = 0; i < limiter_count; i++) {
if (category == limiter[i]) {
document.getElementById("form1").action = "categoryforms.php";
document.getElementById("form1").submit();
//loop should be terminated
} else {
var alrt = "We will soon be launching our service in " + category + ", kindly stay tuned...";
alert(alrt);
//loop should be terminated here also
}
}
}
}
</script>
函数验证(){
var category=document.getElementById(“category”).value;
category=category.trim();
如果(类别==“”){
警告(“请选择类别”);
返回;
}否则{
var限制器=[“电工”、“摄影师”、“印刷机”、“网站设计师”、“网站开发人员”、“DJ音乐”、“辅导班”、“土建承包商”、“计算机硬件服务”];
无功限制器\ U计数=限制器长度;
对于(变量i=0;i
表格为:
<form action="" method="post" name="form1" id="form1" >
<input type="text" name="category" id="category" value="<?php echo $category; ?>" />
<ul id="categorymenu" class="mcdropdown_menu">
<?php
$sql = "SELECT * FROM category";
$sql_result = mysql_query ($sql);
while ($row = mysql_fetch_assoc($sql_result)){
?>
<li rel="<?php echo $row["category"]; ?>" value="<?php echo $row["category"]; ?>" ><?php echo $row["category"]; ?> </li>
<?php
}
?>
</ul>
<input id="button" type="button" value="Send " class="serch" onClick="javascript:validation()">
</form>
您不需要循环,使用它来检查数组中是否存在元素
indexOf()
剧本
步骤1:以可读的方式格式化代码,使人们更容易帮助您。您的代码完全正常工作。我只是在IE控制台调试器上测试它,然后按下submit按钮,它就会跳转到javascript方法中。。所以,请尝试检查是否有指向javascript文件的正确链接。。卢卡斯
function validation() {
var category = document.getElementById("category").value;
category = category.trim();
if (category == "") {
alert("Please Select Category.");
return;
}
var limiter = ["Electrician", "Photographer", "Printing Press", "Website Designer", "Web developer", "DJ Music", "Coaching Classes", "Civil Contractor", "Computer Hardware Services"];
var index = limiter.indexOf(category);
if (index > -1) {
document.getElementById("form1").action = "categoryforms.php";
document.getElementById("form1").submit();
//loop should be terminated
} else {
var alrt = "We will soon be launching our service in " + category + ", kindly stay tuned...";
alert(alrt);
//loop should be terminated here also
}
}