好的,我正在尝试编写另一个程序来练习我的Javascript,并且我遇到了另一个障碍。目前,该计划很简单。从种族列表(当前仅限于“瑞典人”和“意大利人”)的下拉列表中进行选择,然后该程序将写出他们(刻板印象)外观的简短描述,并张贴图片。或者说,更改默认的“神秘人”图片。通过修改“src”不会改变图片
第一部分正常工作。如果您选择“瑞典人”或“意大利语”,文字会有所不同。图片部分没有。图像不会改变其默认的“神秘人”图片。这是为什么?
var ethnicities = [{
name: "Swede",
eyecolor: "blue",
hairtex: "straight",
fp: 1,
pic: "Swedish.png"
},
{
name: "Italian",
eyecolor: "brown",
hairtex: "curly",
fp: 2,
pic: "Italian.png"
}
];
function description() {
var desc = "The " + ethnicities[document.EPF.EPDD.value].name +
" is " + ethnicities[document.EPF.EPDD.value].eyecolor + "-eyed and " +
ethnicities[document.EPF.EPDD.value].hairtex + "-haired." +
"";
document.getElementById("demo").innerHTML = desc;
document.getElementbyId("picture").src = ethnicities[document.EPF.EPDD.value].pic;
//so weird, it just doesn't chnage it. It doesn't matter what I put on the
//right of the equal sign.
}
<p>Ethnicity presets:</p>
<form name="EPF">
<select name="EPDD">
<option value="0">Swede</option>
<option value="1">Italian</option>
</select>
<input type="button" value="Submit" onClick="description()">
</form>
<p id="demo"> </p>
<img id="picture" src="Mystery man.png" alt="unknown">
错字,'getElementbyId'应该是'getElementById' – adeneo
哦,我的天哪,谢谢!令人惊奇的是,这些小东西让你编程! –
您应该删除它。 – Rob