1
我有一個表單,通過javascript添加了一個複選框,當表單被提交時,它檢查複選框是否被勾選。這在Firefox或Chrome中運行良好,但在IE7或8中會導致錯誤document.myform.mycheckbox.checked爲空或不是對象。Javascript對象爲空或不在IE中的對象
var checkbox = document.createElement("input");
checkbox.type = "checkbox";
checkbox.name = "mycheckbox";
checkbox.value= 291;
var div = document.getElementById("addcb");
div.appendChild(checkbox);
checkbox.checked = false;
在形式標籤我的onSubmit =「返回CheckForm();」,其工作在Firefox或Chrome確定,但在IE7或8它提交表單,而不檢查的形式,或者其它形式的對象。
if (document.myform.mycheckbox.checked == false){
errorMsg += "\n\tAgree \t- Please Click I Agree Checkbox";
}
//If there is aproblem with the form then display an error
if ((errorMsg != "") || (errorMsgLong != "")){
msg = "_______________________________________________________________\n\n";
msg += "The form has not been submitted because there are problem(s) with the form.\n";
msg += "Please correct the problem(s) and re-submit the form.\n";
msg += "_______________________________________________________________\n\n";
msg += "The following field(s) need to be corrected: -\n";
errorMsg += alert(msg + errorMsg + "\n" + errorMsgLong);
return false;
}
return true;
我用的開發工具來創建一個Brakpoint該報告錯誤:在創建它
document.myform.mycheckbox.checked is null or not an object
仍返回爲空或不是一個對象在IE7/8中提交表單 – user2895984
document.getElementById(「mycheckbox」)。getAttribute('checked')'? –
啊,成功了。感謝那。 – user2895984