<script>
function display()
{
var obj=document.getElementById("user")
var str=obj.value;
if(str=="")
{
document.getElementById("div1").innerHTML="sfdsfds";
obj.focus();
}
}
</script>
<div id="div1"></div>
<input type="text" onblur="display()" id="user">为什么我这个不能获得焦点
function display()
{
var obj=document.getElementById("user")
var str=obj.value;
if(str=="")
{
document.getElementById("div1").innerHTML="sfdsfds";
obj.focus();
}
}
</script>
<div id="div1"></div>
<input type="text" onblur="display()" id="user">为什么我这个不能获得焦点
<div id="div1"></div>
<input type="text" id="user">
<script>
function display()
{
var obj=document.getElementById("user")
var str=obj.value;
if(str=="")
{
document.getElementById("div1").innerHTML="sfdsfds";
obj.focus();
}
}
display();
</script>