javascript下拉循环if语句
可能的重复:
javascript下拉循环if语句
我创建了 2 个下拉菜单,来自 和到,这些包括从 8 > 开始的时间。 22:00,但是在提交表格时,它要求我选择一个开始时间,该时间已经由我包含的警报选项选择并确认,这真的让我很困惑!任何帮助表示赞赏。
克雷格
window.status='Loading contingency scripts - please wait...';
audit('Loading contingency scripts');
var conting={ i:0
,start:function(){
window.status='Loading form - please wait...';
var t='';
t+='<form name="frm_conting" id="frm_conting" onsubmit="return false;">';
t+='<table width="100%" cellspacing="1" cellpadding="0">';
t+='<tr><td>Date (DD/MM/YY):</td><td><input type="text" size="8" value="'+current_date+'" id="date"></td></tr>';
t+='<tr><td>Time Started:</td><td><select id="timefrom"><option></option>';
for(h=8;h<23;h++){
for(m=0;m<46;m=m+15){ t+='<option value='+nb[h]+':'+nb[m]+'>'+nb[h]+':'+nb[m]+'</option>'; };
};
t+='</select></td></tr>';
t+='<tr><td>Time Finished:</td><td><select id="timefrom"><option></option>';
for(h=8;h<23;h++){
for(m=0;m<46;m=m+15){ t+='<option value='+nb[h]+':'+nb[m]+'>'+nb[h]+':'+nb[m]+'</option>'; };
};
t+='</select><tr><td>Extension #:</td><td><input type="text" size="5" value="'+my.extension+'" id="staffid"></td></tr>';
t+='<tr><td>Desk ID:</td><td><input type="text" size="5" value='+my.deskid+' id="desk"></td></tr>';
t+='<tr><td>Number of calls:</td><td><input type="text" size="5" id="calls"></td></tr>';
t+='<tr><td>Avid ID:</td><td><input type="text" size="5" id="avid"></td></tr>';
t+='<tr><td><input type="button" value="Submit" onClick="conting.save()"></td>';
t+='</table>';
t+='</form>';
div_form.innerHTML=t;
window.resizeTo(400,385);
window.status='';
}
,save:function(){
alert (frm_conting.timefrom.value);
var conting_date=frm_conting.date.value;
if(!isdate(conting_date)){alert("You have entered an incorrect date.");return false;};
var conting_timefrom=frm_conting.timefrom.value;
if(isNaN(conting_timefrom)){alert("You need to enter a starting time.");return false;};
if(conting_timefrom.value>conting_timeto.value){alert("The time you have entered is after the finish time.");return false;};
var conting_timeto=frm_conting.timeto.value;
if(isNaN(conting_timeto)){alert("You need to enter a finishing time.");return false;};
if(conting_timeto.value<conting_timefrom.value){alert("The time you have entered is after the finish time.");return false;};
var conting_staffid=frm_conting.staffid.value;
if(conting_staffid.length!=5) { alert("You have entered an incorrect extension number.");return false;};
var conting_desk=frm_conting.desk.value;
if(conting_desk.length!=5) { alert("You have entered an incorrect desk ID.");return false;};
var conting_calls=frm_conting.calls.value;
if(isNaN(conting_calls)){alert("You have not entered amount of calls.");return false;};
var conting_avid=frm_conting.avid.value;
if(isNaN(conting_avid)){alert("You have entered an incorrect avid ID.");return false;};
if(conting_avid.length!=5) { alert("You have entered an incorrect avid ID.");return false;};
conn.open(db["contingency"]);
rs.open("SELECT MAX(prac_id) FROM practice",conn);
var prac_id=rs.fields(0).value+1;
rs.close();
rs.open("INSERT INTO practice (prac_id, prac_staffid, prac_date, prac_timefrom, prac_timeto, prac_extension, prac_desk, prac_calls, prac_avid) VALUES (1, 2, 3, 4, 5, 6, 7, 8, 9)",conn);
conn.close();
}
};
window.status='';
enter code here
Possible Duplicate:
javascript drop down loop if statement
I have created 2 drop down menus, from and to, these include times starting from 8 > 22:00, however on submitting the form it is asking me to select a start time which has already been selected and confirmed by an alert option i have included, has really confused me!! any help appreciated.
craig
window.status='Loading contingency scripts - please wait...';
audit('Loading contingency scripts');
var conting={ i:0
,start:function(){
window.status='Loading form - please wait...';
var t='';
t+='<form name="frm_conting" id="frm_conting" onsubmit="return false;">';
t+='<table width="100%" cellspacing="1" cellpadding="0">';
t+='<tr><td>Date (DD/MM/YY):</td><td><input type="text" size="8" value="'+current_date+'" id="date"></td></tr>';
t+='<tr><td>Time Started:</td><td><select id="timefrom"><option></option>';
for(h=8;h<23;h++){
for(m=0;m<46;m=m+15){ t+='<option value='+nb[h]+':'+nb[m]+'>'+nb[h]+':'+nb[m]+'</option>'; };
};
t+='</select></td></tr>';
t+='<tr><td>Time Finished:</td><td><select id="timefrom"><option></option>';
for(h=8;h<23;h++){
for(m=0;m<46;m=m+15){ t+='<option value='+nb[h]+':'+nb[m]+'>'+nb[h]+':'+nb[m]+'</option>'; };
};
t+='</select><tr><td>Extension #:</td><td><input type="text" size="5" value="'+my.extension+'" id="staffid"></td></tr>';
t+='<tr><td>Desk ID:</td><td><input type="text" size="5" value='+my.deskid+' id="desk"></td></tr>';
t+='<tr><td>Number of calls:</td><td><input type="text" size="5" id="calls"></td></tr>';
t+='<tr><td>Avid ID:</td><td><input type="text" size="5" id="avid"></td></tr>';
t+='<tr><td><input type="button" value="Submit" onClick="conting.save()"></td>';
t+='</table>';
t+='</form>';
div_form.innerHTML=t;
window.resizeTo(400,385);
window.status='';
}
,save:function(){
alert (frm_conting.timefrom.value);
var conting_date=frm_conting.date.value;
if(!isdate(conting_date)){alert("You have entered an incorrect date.");return false;};
var conting_timefrom=frm_conting.timefrom.value;
if(isNaN(conting_timefrom)){alert("You need to enter a starting time.");return false;};
if(conting_timefrom.value>conting_timeto.value){alert("The time you have entered is after the finish time.");return false;};
var conting_timeto=frm_conting.timeto.value;
if(isNaN(conting_timeto)){alert("You need to enter a finishing time.");return false;};
if(conting_timeto.value<conting_timefrom.value){alert("The time you have entered is after the finish time.");return false;};
var conting_staffid=frm_conting.staffid.value;
if(conting_staffid.length!=5) { alert("You have entered an incorrect extension number.");return false;};
var conting_desk=frm_conting.desk.value;
if(conting_desk.length!=5) { alert("You have entered an incorrect desk ID.");return false;};
var conting_calls=frm_conting.calls.value;
if(isNaN(conting_calls)){alert("You have not entered amount of calls.");return false;};
var conting_avid=frm_conting.avid.value;
if(isNaN(conting_avid)){alert("You have entered an incorrect avid ID.");return false;};
if(conting_avid.length!=5) { alert("You have entered an incorrect avid ID.");return false;};
conn.open(db["contingency"]);
rs.open("SELECT MAX(prac_id) FROM practice",conn);
var prac_id=rs.fields(0).value+1;
rs.close();
rs.open("INSERT INTO practice (prac_id, prac_staffid, prac_date, prac_timefrom, prac_timeto, prac_extension, prac_desk, prac_calls, prac_avid) VALUES (1, 2, 3, 4, 5, 6, 7, 8, 9)",conn);
conn.close();
}
};
window.status='';
enter code here
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只要值不是数字(isNaN),js 保存例程就会失败。该值中有一个冒号,因此它永远不是数字。您不需要检查 isNaN,因为它是一个下拉菜单,因此您可以控制在那里输入的内容,这与您可以使用 isNaN 来确保用户输入数字的文本框不同。
The js save routine will fail whenever the value is not a number (isNaN). The value has a colon in it, hence it's never a number. You don't need to check isNaN, because it's a drop down, so you control what is entered there, unlike a text box where you might use isNaN to be sure the user typed in a number.