Problem with Javascript

[Swela Jathar]

Hi,
I am new to Javascript.I have Jsp file which contains form.I have done validation for date in javascript file.when field is blank i wants to set focus to textfiled.
so how can I access textfield in js file?

Thanks in advance.

[Vic Hood]

Use-

formName.elementName.focus();

[Bear Bibeault]

Vic Hood wrote:Use-

formName.elementName.focus();

That form of referencing elements is not a good practice. It is antiquated and fragile. It should no longer be used.

Rather, assign an id value to the element and reference the element using document.getElementById().

[Phelipe Maia]

You should use a JS library.. You probably will need more functions in JS and the libraries will help you to do an easier work. Take a look: http://jquery.com/

[Swela Jathar]

Thanks bear,
but it is not working for me.

see my JSP code:
<td colspan="5">
<html:text property="birthDay" onblur="daySize(this);"
maxlength="2"styleClass="datewidth" tabindex="15"/>
<span class="dashEnglish">
<bean:message key="common.slash"/>
</span>
</td>

I hav called daySize function on onblu.

n js code:

function daySize(target){
var length= target.value.length;
var flag=0;
if(target.value=="" || target.value=='' || target.value.charAt(0)==' ' || length==0){
alert("Please enter day value");

// HERE I WANTS TO SET FOCUS TO TEXTFIELD



else
if(length!=0){
intNumber= parseInt(target.value);
if(!isNaN(intNumber)){
if(target.value>=32 || target.value<=0){
alert("Invalid Day");
flag=1;

}
else if(length==1){
target.value="0"+target.value;
}
}
else{
alert("Day Should Be Integer");
flag=1;
}
}
if(flag==1){
// HERE I WANTS TO SET FOCUS TO TEXTFIELD

}

}



Thanks...

[Bear Bibeault]

Please UseCodeTags and please indicate the specific lines of code that you are having problems with. Be sure that your code is formatted properly.

Also, showing server-side markup isn't helpful. Please show the client-side HTNL.

[Eric Pascarello]

target.focus();


Eric

[Swela Jathar]

Hi,
by using setTimeout and getElementById problem is solved...

Thanks...

[Eric Pascarello]

Why do you have to use getElementById when you are already passing in the object to the function?

Eric

[Swela Jathar]

hi Eric,
target.focus() was not working...