最终的目的是返回一个显示下面这句话的页面
Once upon a time there was a GENDER named NAME
who had a PET named PET NAME.
<SCRIPT language="JavaScript">
var heroGender, heroName, petType, petName;
heroGender = window.prompt('Is the hero female or male? Enter F or M', 'F');
heroName = window.prompt('What is the hero\'s name?','');
petType = window.prompt('What type of pet does the hero have?','');
petName = window.prompt('What is name of the pet?','');
document.write('Once upon a time there was a ');
if (heroGender == ('F'))
{
document.write('girl');
}
else
{
document.write('boy');
}
document.write('Once upon a time there was a ' + heroGender + ' named ' + heroName '.''<BR>' +
heroName + ' had a ' + petType + ' called ' + petName + '.');
</SCRIPT>
最佳答案
在您等待书籍的同时!
一个例子:
固定版本
document.write(
'Once upon a time there was a ' + heroGender +
' named ' + heroName + '.' + '<BR>' + heroName +
' had a ' + petType + ' called ' + petName + '.');
破解版
您缺少 +
符号。
document.write(
'Once upon a time there was a ' + heroGender +
' named ' + heroName /* + */ '.' /* + */ '<BR>' + heroName +
' had a ' + petType + ' called ' + petName + '.');
尝试使用
- Firefox 和 Firebug及其控制台选项卡(按 F12)
- IE9 和内置控制台(按 F12。确保控制台已打开,然后刷新)。
- Chrome 和控制台中的构建(按 Ctrl+Shift+J)
观察任何错误信息。
如果这样太费力,那就试试
window.onerror = function(e) {
alert(e.message);
}
这是一个“改进的”更符合标准的版本。 Example Link!
HTML:
<label> Your Hero's gender </label><input id="heroGender"/><br/>
<label> Your Hero's name </label><input id="heroName"/><br/>
<label> Your Hero's pet type </label><input id="petType"/><br/>
<label> Your Hero's pet name </label><input id="petName"/><br/>
<button> Make me a hero! </button>
<div id="output"></div>
JavaScript:
// make your hero when you press the button
document.getElementsByTagName("button")[0].addEventListener("click", function() {
// get all the values from the text boxes
var gender = document.getElementById("heroGender").value,
name = document.getElementById("heroName").value,
petType = document.getElementById("petType").value,
petName = document.getElementById("petName").value;
// set the text on your output.
document.getElementById("output").textContent =
"Once upon a time there was a " + gender +
" named " + name + ". " + name + " had a pet " +
petType + " called " + petName;
}, false);
上面的代码将在 IE8 或更低版本上中断:(。让 JavaScript 跨浏览器工作是一件很痛苦的事。
所以我可以在
阅读浏览器的文档但这些都不容易阅读或浏览。 visibone BrowserBook 是一个很好的跨浏览器脚本可视化指南。 .
它将显示跨浏览器支持(红色是 firefox,蓝色是 IE):
给它几个月的时间,你就会知道如何舒适地使用所有这些东西。
关于javascript - 脚本产生我找不到的错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6036480/