我有一个HTML表单,其中包含一些静态文本框和一个用于创建动态文本框的按钮。现在,当单击按钮时,我希望重点关注新创建的框。我正在使用focus()方法,但它无法正常工作。另一件事是我有一个onFocus()方法,它将改变在静态框中工作但不在动态框中的背景颜色
function addPhone(){
try{
var phone = document.getElementById("phone");
phone.appendChild(document.createElement("Phone"+noOfPhones));
var textbox = document.createElement("input");
textbox.setAttribute("type", "textbox");
textbox.setAttribute("id","phone"+noOfPhones);
textbox.setAttribute("name","phone"+noOfPhones);
textbox.setAttributte('onFocus','onFocus(this);');
textbox.style.background="lightgrey";
document.getElementById("phone").appendChild(textbox);
phone.appendChild(document.createElement("br"));
textbox.focus();
noOfPhones++;
}catch(err){
alert(err);
}
}
function onFocus(element){
element.style.background = "lightgrey";
}
请帮忙。我是JS的新手。感谢
答案 0 :(得分:1)
尝试:
<div id="phone"></div>
<input type="button" onclick="addPhone()" value="Add"/>
<script type="text/javascript">
var noOfPhones=0;
function addPhone(){
try{
noOfPhones++;
var phone = document.getElementById("phone");
phone.appendChild(document.createTextNode("Phone :"+noOfPhones));
var textbox = document.createElement("input");
textbox.setAttribute("type", "textbox");
textbox.setAttribute("id","phone"+noOfPhones);
textbox.setAttribute("name","phone"+noOfPhones);
textbox.setAttribute('onfocus','onFocus(this, true);');
textbox.setAttribute('onblur','onFocus(this, false);');
textbox.style.background="white";
document.getElementById("phone").appendChild(textbox);
phone.appendChild(document.createElement("br"));
textbox.focus();
}catch(err){
alert(err);
}
}
function onFocus(element, hasFocus){
if(hasFocus)
element.style.background = "lightgrey";
else
element.style.background = "white";
}
</script>