javascript惯用函数大全2
日期：2014-05-16 浏览次数：20471 次
javascript常用函数大全2
JavaScript就这么回事1：基础知识 创建脚本块 <script language=”JavaScript”> JavaScript code goes here </script> 隐藏脚本代码 <script language=”JavaScript”> <!– document.write(“Hello”); // –> </script> 在不支持JavaScript的浏览器中将不执行相关代码 浏览器不支持的时候显示 <noscript> Hello to the non-JavaScript browser. </noscript> 链接外部脚本文件 <script language=”JavaScript” src="/”filename.js"”></script> 注释脚本 // This is a comment document.write(“Hello”); // This is a comment /* All of this is a comment */ 输出到浏览器 document.write(“<strong>Hello</strong>”); 定义变量 var myVariable = “some value”; 字符串相加 var myString = “String1” + “String2”;
字符串搜索
<script language=”JavaScript”>
<!–
var myVariable = “Hello there”;
var therePlace = myVariable.search(“there”);
document.write(therePlace);
// –>
</script>
10 字符串替换
thisVar.replace(“Monday”,”Friday”);
11 格式化字串
<script language=”JavaScript”>
<!–
var myVariable = “Hello there”;
document.write(myVariable.big() + “<br>”);
document.write(myVariable.blink() + “<br>”);
document.write(myVariable.bold() + “<br>”);
document.write(myVariable.fixed() + “<br>”);
document.write(myVariable.fontcolor(“red”) + “<br>”);
document.write(myVariable.fontsize(“18pt”) + “<br>”);
document.write(myVariable.italics() + “<br>”);
document.write(myVariable.small() + “<br>”);
document.write(myVariable.strike() + “<br>”);
document.write(myVariable.sub() + “<br>”);
document.write(myVariable.sup() + “<br>”);
document.write(myVariable.toLowerCase() + “<br>”);
document.write(myVariable.toUpperCase() + “<br>”);
var firstString = “My String”;
var finalString = firstString.bold().toLowerCase().fontcolor(“red”);
// –>
</script>
12 创建数组
<script language=”JavaScript”>
<!–
var myArray = new Array(5);
myArray[0] = “First Entry”;
myArray[1] = “Second Entry”;
myArray[2] = “Third Entry”;
myArray[3] = “Fourth Entry”;
myArray[4] = “Fifth Entry”;
var anotherArray = new Array(“First Entry”,”Second Entry”,”Third Entry”,”Fourth Entry”,”Fifth Entry”);
// –>
</script>
13 数组排序
<script language=”JavaScript”>
<!–
var myArray = new Array(5);
myArray[0] = “z”;
myArray[1] = “c”;
myArray[2] = “d”;
myArray[3] = “a”;
myArray[4] = “q”;
document.write(myArray.sort());
// –>
</script>
14 分割字符串
<script language=”JavaScript”>
<!–
var myVariable = “a,b,c,d”;
var stringArray = myVariable.split(“,”);
document.write(stringArray[0]);
document.write(stringArray[1]);
document.write(stringArray[2]);
document.write(stringArray[3]);
// –>
</script>
15 弹出警告信息
<script language=”JavaScript”>
<!–
window.alert(“Hello”);
// –>
</script>
16 弹出确认框
<script language=”JavaScript”>
<!–
var result = window.confirm(“Click OK to continue”);
// –>
</script>
17 定义函数
<script language=”JavaScript”>
<!–
function multiple(number1,number2) {
var result = number1 * number2;
return result;
}
// –>
</script>
18 调用JS函数
<a href=”#” onClick=”functionName()”>Link text</a>
<a href="/”javascript:functionName"()”>Link text</a>
19 在页面加载完成后执行函数
<body onLoad=”functionName();”>
Body of the page
</body>
20 条件判断
<script>
<!–
var userChoice = window.confirm(“Choose OK or Cancel”);
var result = (userChoice == true) ? “OK” : “Cancel”;
document.write(result);
// –>
</script>
21 指定次数循环
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