问题描述
我有一个表格，其中某些字段需要强制填写。
如果用户没有填写任务，请单击提交按钮错误消息弹出。
错误消息的默认文本为：在提交此表单之前，请确保完成以下必填字段：
以及未填充的字段名称将作为错误消息附加。
以下是我尝试的逻辑..
但它似乎没有工作....任何人都可以建议我即兴创作吗？
函数ExitForm（）{
var msg ='' '';
var elem = document.form.elements;
var flag = 0;
//
条件检查字段是否已填满。如果不是，
msg + =\ n+text1
。
。
。
用于textfields，textareas，radiobutton，dropdownlist
//
for（i = 0; i< = elem.length; i ++）{
var ele = elem [i];
if（ele .type ==text|| ele.type ==radio|| ele.type ==textarea|| ele.type ==select）{
if（（（ele.value == null）||（ele.value ==））|| isBlank（ele.value））{
flag = 1;
}
}
}
if（flag == 1）
{
alert（在提交此表单之前，请确保完成以下必填字段：+ msg）;
}
}
Hi,
I have a form with certain fields to be filled in mandatorily.
If user doesn''t fill mandates,onclick of submit button error message has to popup.
The error message has default text as : "Before submitting this form,make sure the following mandatory fields are completed:"
along with this the unfilled field names will be appended as error msg.
Following is the logic i tried..
But it doesnt seem to work....Can anyone please suggest me to improvise it?
function ExitForm(){
var msg = '''';
var elem = document.form.elements;
var flag = 0;
//
condition to check if a field is filled. If no,
msg+= "\n"+"text1"
.
.
.
for textfields,textareas,radiobutton,dropdownlist
//
for(i=0;i<=elem.length;i++){
var ele = elem[i];
if(ele.type == "text" || ele.type == "radio" || ele.type == "textarea" || ele.type == "select"){
if ( ((ele.value == null) || (ele.value == "")) || isBlank(ele.value)){
flag = 1;
}
}
}
if (flag == 1)
{
alert("Before submitting this form,make sure the following mandatory fields are completed:"+msg);
}
}
推荐答案
这篇关于如果未输入必填字段，则显示表单单击提交按钮的错误消息。在错误消息中显示未填充的字段名称的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！