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Firefox中的Javascript問(wèn)題而不是IE調(diào)試問(wèn)題VIsual Studio 2010

CSS
老白2年前7瀏覽0評(píng)論

幫助我非常新的網(wǎng)絡(luò)開(kāi)發(fā)使用ASP.NET。為什么在調(diào)試我的代碼時(shí)，我的web應(yīng)用程序不像IE那樣給出所需的輸出:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
    h1{color:Blue}
    h2{color:Red}

</style>
<script type="text/javascript">
    function ShowColor() {
        alert("You selected " + SelectColor.value);
        BodyContent.style.backgroundColor = SelectColor.value;
    }
</script>
</head>
<body>
<div id="BodyContent">
    <h1>HelloWorld</h1>
    <h2>Welcome</h2>
    <p>
    This is my first Web Page</p>
    <hr />
    Please select color:
    <select id="SelectColor">
        <option value="white">white</option>
        <option value="yellow">yellow</option>
        <option value="silver">silver</option>
    </select>
    <input id="ButtonColor" type="button" value="Select" onclick="ShowColor()" />
</div>

</body>
</html>

問(wèn)題是當(dāng)我點(diǎn)擊選擇按鈕時(shí)，F(xiàn)F不執(zhí)行JavaScript“show color ”,而IE執(zhí)行。

enter image description here

function ShowColor() {
        alert("You selected " + SelectColor.value);
        BodyContent.style.backgroundColor = SelectColor.value;
    }

您的javascript函數(shù)應(yīng)該如下所示:

function ShowColor() {
    alert("You selected " + document.getElementById("SelectColor").value);
    document.body.style.backgroundColor = document.getElementById("SelectColor").value;
}

您需要使用javascript來(lái)選擇實(shí)際的元素。例如document.gelElementById元素的id)，然后更改文檔顏色。這應(yīng)該可以在任何瀏覽器中運(yùn)行。

該函數(shù)現(xiàn)在顯示適當(dāng)?shù)倪x定值，并實(shí)際改變網(wǎng)頁(yè)的背景。

試試這個(gè):

<script type="text/javascript">
var selected;
function alertselected(selectobj) {
    selected = selectobj.selectedIndex;
}

function ShowColor() {
    alert("You selected " + selected);
    elm = document.getElementById("sample");
    document.getElementById("BodyContent").style.backgroundColor = elm.options[elm.selectedIndex].value;
}

html:

<div id="BodyContent"><select id="sample" onChange="alertselected(this)">option>white</option><option>yellow</option><option>silver</option>

<input id="ButtonColor" type="button" value="Select" onclick="ShowColor()" /></div>