发布于 2017-01-09 11:56:20 | 140 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Javascript教程，程序狗速度看过来！
JavaScript客户端脚本语言
Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。
鼠标划过自动选中：<input type="text" value="默认值" onMouseOver="this.focus();" onfucus="this.seelct()" />
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<title>js操作表单</title>
<script language="javascript">
function getChoice(){
var oForm=document.forms["myForm1"];
var aChoice=oForm.camera;
for(i=0;i<aChoice.length;i++)
if(aChoice[i].checked)
break;
alert("您使用的相机品牌是："+aChoice[i].value);
}
function setChoice(iNum){
var oForm=document.forms["myForm1"];
oForm.camera[iNum].checked=true;
}
</script>
</head>
<body>
<form method="post" name="myForm1" action="">
<p>您使用的相机品牌</p>
<p>
<input type="radio" name="camera" id="canon" value="Canon">
<label for="canon">Canon</label>
</p>
<p>
<input type="radio" name="camera" id="nikon" value="Nikon">
<label for="nikon">Nikon</label>
</p>
<p>
<input type="radio" name="camera" id="sony" value="Sony">
<label for="sony">Sony</label>
</p>
<p>
<input type="radio" name="camera" id="pentax" value="Tentax">
<label for="pentax">Tentax</label>
</p>
<p>
<input type="button" value="检查选中对象" onClick="getChoice();">
<input type="button" value="设置为Canon" onClick="setChoice(0);">
</p>
</form>
</body>
</html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<title>js操作表单</title>
<script language="javascript">
function changeBoxes(action){
var oForm=document.forms["myForm1"];
var oCheckBox=oForm.hobby;
for(var i=0;i<oCheckBox.length;i++)//遍历每一个选项
if(action<0) //反选
oCheckBox[i].checked=!oCheckBox[i].checked;
else
oCheckBox[i].checked=action;
}
</script>
</head>
<body>
<form method="post" name="myForm1" action="">
<p>
<input type="checkbox" name="hobby" id="ball" value="ball">
<label for="ball">打球</label>
</p>
<p>
<input type="checkbox" name="hobby" id="TV" value="TV">
<label for="TV">看电视</label>
</p>
<p>
<input type="checkbox" name="hobby" id="net" value="net">
<label for="net">上网</label>
</p>
<p>
<input type="checkbox" name="hobby" id="book" value="book">
<label for="book">看书</label>
</p>
<p>
<input type="checkbox" name="hobby" id="run" value="run">
<label for="run">跑步</label>
</p>
<p>
<input type="button" value="全选" onClick="changeBoxes(1);">
<input type="button" value="全不选" onClick="changeBoxes(0);"/>
<input type="button" value="反选" onClick="changeBoxes(-1);"/>
</p>
</form>
</body>
</html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<title>js操作表单</title>
<script language="javascript">
function checkSingle(){
var oForm=document.forms["myForm1"];
var oSelectBox=oForm.constellation;
var iChoice=oSelectBox.selectedIndex;//获取选中项
alert("您选中了："+oSelectBox.options[iChoice].text);
}
</script>
</head>
<body>
<form method="post" name="myForm1" action="">
<p>
<select id="constellation" name="constellation">
<option value="Aries" selected="selected">白羊</option>
<option value="Taurus">金牛</option>
<option value="Gemin">双子</option>
<option value="Leo">狮子</option>
<option value="Virgo">处女</option>
</select>
</p>
<p>
<input type="button" value="查看选项" onClick="checkSingle();" />
</p>
</form>
</body>
</html>