jQuery's dialog plugin

What's开发者_如何学C the point of storing the ui-dialog-title object in the uiDialogTitle variable, if the variable is never used anywhere in code?

        uiDialogTitle = $('<span></span>')
            .addClass('ui-dialog-title')
            .attr('id', titleId)
            .html(title)
            .prependTo(uiDialogTitlebar);

If the variable is never used, don't store the value into a variable.

$('<span></span>')
    .addClass('ui-dialog-title')
    .attr('id', titleId)
    .html(title)
    .prependTo(uiDialogTitlebar);

This will accomplish the same.