[英]Go to page based on selected options
我正在為我的網站建立檔案,但被卡住了。 我希望用戶選擇要轉到該文件夾中頁面的年,月和周。 我無法解決捕獲值並創建指導用戶的條件所需的JavaScript。 以及添加一個提交按鈕。 謝謝。
<select id="year" name="year"> <option value="#">year?</option> <option value="2015">2015</option> </select> <select id="month" name="month"> <option value="#">month?</option> <option value="jan">jan</option> <option value="feb">feb</option> <option value="mar">mar</option> </select> <select id="week" name="week"> <option value="#">week?</option> <option value="wk1">1</option> <option value="wk2">2</option> <option value="wk3">3</option> <option value="wk4">4</option> </select> <input type="button" onclick="" value="Submit">
var year = $('#year').val(); var month = $('#month').val(); var week = $('#week').val(); //some more code...where I get stuck if (year==2015 && month==jan && week==2) { window.location = "2015/jan/wk1/monday.html"; } else if (year==2015 && month==jan && week==2) { window.location = "2015 / jan / wk2 / monday.html"; }
編寫代碼而不是成功警告消息。 這樣可以解決您的概率希望。
var year = $('#year').val(); var month = $('#month').val(); var week = $('#week').val(); //some more code...where I get stuck function urFunctin(){ if(document.getElementById("week").selectedIndex!=0) { if(document.getElementById("year").selectedIndex==0) { alert("Select year"); document.getElementById("week").selectedIndex=0; } else if(document.getElementById("month").selectedIndex==0) { alert("Select month"); document.getElementById("week").selectedIndex=0; } else{ var year = $('#year').val(); var month = $('#month').val(); var week = $('#week').val(); if(year && month && week) alert(year + "/" + month + "/" + week + "/monday.html"); } } }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script> <select id="year" name="year"> <option value="#">year?</option> <option value="2015">2015</option> </select> <select id="month" name="month"> <option value="#">month?</option> <option value="jan">jan</option> <option value="feb">feb</option> <option value="mar">mar</option> </select> <select id="week" name="week"> <option value="#">week?</option> <option value="wk1">1</option> <option value="wk2">2</option> <option value="wk3">3</option> <option value="wk4">4</option> </select> <br/><br/> <input id="submit" type="button" onclick="urFunctin();" value="SUBMIT">
我認為如果所有選擇都具有一定價值,您想將用戶重定向到特定頁面。 因此,為所有這些元素設置一個通用類,並將空字符串設置為默認值:
<select id="year" name="year" class="toRedirect">
<option value="">year?</option>
<option value="2015">2015</option>
</select>
<select id="month" name="month" class="toRedirect">
<option value="">month?</option>
<option value="jan">jan</option>
<option value="feb">feb</option>
<option value="mar">mar</option>
</select>
<select id="week" name="week" class="toRedirect">
<option value="">week?</option>
<option value="wk1">1</option>
<option value="wk2">2</option>
<option value="wk3">3</option>
<option value="wk4">4</option>
</select>
然后處理變更事件:
$(function() { // document ready wrapper, could be stripped out
$('.toRedirect').on('change', function() {
var year = $('#year').val();
var month = $('#month').val();
var week = $('#week').val();
if(year && month && week)
window.location = year + "/" + month + "/" + week + "/monday.html";
// what about day, only monday???
});
});
您對比較和邏輯語句有一些錯誤的想法,比較字符串時需要在引號中添加字符串。
var year = $('#year').val();
var month = $('#month').val();
var week = $('#week').val();
//some more code...where I get stuck
if (year != '#' && month != '#' && week != '#') {
window.location = year + '/' + month + '/' + week + '/monday.html';
}
這將是使用最少的JavaScript來處理它的方法。
if ($('#year').val() != '#'
&& $('#month').val() != '#'
&& $('#week').val() != '#') {
window.location = $('#year').val() + '/'
+ $('#month').val() + '/'
+ $('#week').val() + '/monday.html';
}
雖然,變量使它更具可讀性。
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