// txtfield1 是要放浮水印的方針文字欄位
txtfield1.addEventListener (FocusEvent.FOCUS_OUT, addTextDefault);
txtfield1.addEventListener (FocusEvent.FOCUS_IN, removeTextDefault);
var default_tf = txtfield1.getStyle ("textFormat");
function addTextDefault (e) {
if (e.currentTarget.text == "") {
e.currentTarget.setStyle ("textFormat"翻譯社 new TextFormat(null,null,0xAAAAAA));
e.currentTarget.text = "←請輸入資料";
}
}
function removeTextDefault (e) {
if (e.currentTarget.text == "←請輸入資料") {
e.currentTarget.setStyle ("textFormat", default_tf);
e.currentTarget.text = "";
}
}
addTextDefault ({currentTarget:txtfield1});
很短的程式碼
翻譯社 setStyle函式是用來設定組件的樣式