window.onload = function(){
cds = document.getElementsByName("cd[]");
for(var i = 0; i < cds.length; i++){
cds[i].addEventListener("change", addCDToCart, false);
}
}
/**
* this function is called
* when a CD checkbox is selected
*/
var addCDToCart = function(){
//get total cost textbox value
var txtTotal = $("total");
// loop through all the checkboxes
for(var i = 0; i < cds.length; i++){
if(cds[i].checked == true){
var nextCD = parseFloat(cds[i].title);
total = ((total) + (nextCD));
}
}
txtTotal.value = total.toString();
alert(total.toString());
}
我用上面的代碼來檢查數組中的所有複選框。我想總結所有選定複選框的所有價格。問題是價格存儲在title屬性中,而不是value屬性。我嘗試使用上面的代碼,總結起來檢查2個複選框與8.20和12.70的價格,從標題屬性,但它顯示是這樣的:javascript:如何從複選框獲取標題屬性值?
[object HTMLinputElement]8.212.7
我的任務說,我不是想修改HTML代碼。下面顯示了部分HTML代碼:
<div class='item'>
<span class='CDTitle'>Where is the Love</span>
<span class='CDYear'>2000</span>
<span class='catDesc'>Rap</span>
<span class='CDPrice'>12.70</span>
<span class='chosen'><input type='checkbox' name='cd[]' value='974' title='12.70' /></span>
</div>
<div class='item'>
<span class='CDTitle'>White Ladder</span>
<span class='CDYear'>2000</span>
<span class='catDesc'>Rock/Pop</span>
<span class='CDPrice'>8.20</span>
<span class='chosen'><input type='checkbox' name='cd[]' value='975' title='8.20' /></span>
</div>
解決此問題的任何提示?謝謝!
你使用常規的JavaScript *和* jQuery嗎? – 2013-03-14 01:46:50
@JohnConde我只使用普通的javascript。 – Boon 2013-03-14 01:49:35
'cds [i] .getAttribute('name');' – 2013-03-14 01:52:23