js 使用方法与函数 总结第1/4页
更新时间：2009年05月17日 18:19:18 作者：
js使用方法小结，比较不错，无论是新手，还是老手都是不错的。
1 创建脚本块
1: <script language="JavaScript">
2: JavaScript code goes here
3: </script>
2 隐藏脚本代码
1: <script language="JavaScript">
2: <!--
3: document.write(“Hello");
4: // -->
5: </script>
在不支持JavaScript的浏览器中将不执行相关代码
3 浏览器不支持的时候显示
1: <noscript>
2: Hello to the non-JavaScript browser.
3: </noscript>
4 链接外部脚本文件
1: <script language="JavaScript" src="/"filename.js""></script>
5 注释脚本
1: // This is a comment
2: document.write(“Hello"); // This is a comment
3: /*
4: All of this
5: is a comment
6: */
6 输出到浏览器
1: document.write(“<strong>Hello</strong>");
7 定义变量
1: var myVariable = “some value";
8 字符串相加
1: var myString = “String1" + “String2";
9 字符串搜索
1: <script language="JavaScript">
2: <!--
3: var myVariable = “Hello there";
4: var therePlace = myVariable.search(“there");
5: document.write(therePlace);
6: // -->
7: </script>
10 字符串替换
1: thisVar.replace(“Monday","Friday");
11 格式化字串
1: <script language="JavaScript">
2: <!--
3: var myVariable = “Hello there";
4: document.write(myVariable.big() + “<br>");
5: document.write(myVariable.blink() + “<br>");
6: document.write(myVariable.bold() + “<br>");
7: document.write(myVariable.fixed() + “<br>");
8: document.write(myVariable.fontcolor(“red") + “<br>");
9: document.write(myVariable.fontsize(“18pt") + “<br>");
10: document.write(myVariable.italics() + “<br>");
11: document.write(myVariable.small() + “<br>");
12: document.write(myVariable.strike() + “<br>");
13: document.write(myVariable.sub() + “<br>");
14: document.write(myVariable.sup() + “<br>");
15: document.write(myVariable.toLowerCase() + “<br>");
16: document.write(myVariable.toUpperCase() + “<br>");
17:
18: var firstString = “My String";
19: var finalString = firstString.bold().toLowerCase().fontcolor(“red");
20: // -->
21: </script>
12 创建数组
1: <script language="JavaScript">
2: <!--
3: var myArray = new Array(5);
4: myArray[0] = “First Entry";
5: myArray[1] = “Second Entry";
6: myArray[2] = “Third Entry";
7: myArray[3] = “Fourth Entry";
8: myArray[4] = “Fifth Entry";
9: var anotherArray = new Array(“First Entry","Second Entry","Third Entry","Fourth Entry","Fifth Entry");
10: // -->
11: </script>
13 数组排序
1: <script language="JavaScript">
2: <!--
3: var myArray = new Array(5);
4: myArray[0] = “z";
5: myArray[1] = “c";
6: myArray[2] = “d";
7: myArray[3] = “a";
8: myArray[4] = “q";
9: document.write(myArray.sort());
10: // -->
11: </script>
14 分割字符串
1: <script language="JavaScript">
2: <!--
3: var myVariable = “a,b,c,d";
4: var stringArray = myVariable.split(“,");
5: document.write(stringArray[0]);
6: document.write(stringArray[1]);
7: document.write(stringArray[2]);
8: document.write(stringArray[3]);
9: // -->
10: </script>
15 弹出警告信息
1: <script language="JavaScript">
2: <!--
3: window.alert(“Hello");
4: // -->
5: </script>
16 弹出确认框
1: <script language="JavaScript">
2: <!--
3: var result = window.confirm(“Click OK to continue");
4: // -->
5: </script>
17 定义函数
1: <script language="JavaScript">
2: <!--
3: function multiple(number1,number2) {
4: var result = number1 * number2;
5: return result;
6: }
7: // -->
8: </script>
18 调用JS函数
1: <a href="#" onClick="functionName()">Link text</a>
2: <a href="/"javascript:functionName"()">Link text</a>
19 在页面加载完成后执行函数
1: <body onLoad="functionName();">
2: Body of the page
3: </body>
20 条件判断
1: <script>
2: <!--
3: var userChoice = window.confirm(“Choose OK or Cancel");
4: var result = (userChoice == true) ? “OK" : “Cancel";
5: document.write(result);
6: // -->
7: </script>
21 指定次数循环
1: <script>
2: <!--
3: var myArray = new Array(3);
4: myArray[0] = “Item 0";
5: myArray[1] = “Item 1";
6: myArray[2] = “Item 2";
7: for (i = 0; i < myArray.length; i++) {
8: document.write(myArray[i] + “<br>");
9: }
10: // -->
11: </script>
22 设定将来执行
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: }
6: window.setTimeout(“hello()",5000);
7: // -->
8: </script>
23 定时执行函数
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: window.setTimeout(“hello()",5000);
6: }
7: window.setTimeout(“hello()",5000);
8: // -->
9: </script>
24 取消定时执行
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: }
6: var myTimeout = window.setTimeout(“hello()",5000);
7: window.clearTimeout(myTimeout);
8: // -->
9: </script>
25 在页面卸载时候执行函数
1: <body onUnload="functionName();">
2: Body of the page
3: </body>
1: <script language="JavaScript">
2: JavaScript code goes here
3: </script>
2 隐藏脚本代码
1: <script language="JavaScript">
2: <!--
3: document.write(“Hello");
4: // -->
5: </script>
在不支持JavaScript的浏览器中将不执行相关代码
3 浏览器不支持的时候显示
1: <noscript>
2: Hello to the non-JavaScript browser.
3: </noscript>
4 链接外部脚本文件
1: <script language="JavaScript" src="/"filename.js""></script>
5 注释脚本
1: // This is a comment
2: document.write(“Hello"); // This is a comment
3: /*
4: All of this
5: is a comment
6: */
6 输出到浏览器
1: document.write(“<strong>Hello</strong>");
7 定义变量
1: var myVariable = “some value";
8 字符串相加
1: var myString = “String1" + “String2";
9 字符串搜索
1: <script language="JavaScript">
2: <!--
3: var myVariable = “Hello there";
4: var therePlace = myVariable.search(“there");
5: document.write(therePlace);
6: // -->
7: </script>
10 字符串替换
1: thisVar.replace(“Monday","Friday");
11 格式化字串
1: <script language="JavaScript">
2: <!--
3: var myVariable = “Hello there";
4: document.write(myVariable.big() + “<br>");
5: document.write(myVariable.blink() + “<br>");
6: document.write(myVariable.bold() + “<br>");
7: document.write(myVariable.fixed() + “<br>");
8: document.write(myVariable.fontcolor(“red") + “<br>");
9: document.write(myVariable.fontsize(“18pt") + “<br>");
10: document.write(myVariable.italics() + “<br>");
11: document.write(myVariable.small() + “<br>");
12: document.write(myVariable.strike() + “<br>");
13: document.write(myVariable.sub() + “<br>");
14: document.write(myVariable.sup() + “<br>");
15: document.write(myVariable.toLowerCase() + “<br>");
16: document.write(myVariable.toUpperCase() + “<br>");
17:
18: var firstString = “My String";
19: var finalString = firstString.bold().toLowerCase().fontcolor(“red");
20: // -->
21: </script>
12 创建数组
1: <script language="JavaScript">
2: <!--
3: var myArray = new Array(5);
4: myArray[0] = “First Entry";
5: myArray[1] = “Second Entry";
6: myArray[2] = “Third Entry";
7: myArray[3] = “Fourth Entry";
8: myArray[4] = “Fifth Entry";
9: var anotherArray = new Array(“First Entry","Second Entry","Third Entry","Fourth Entry","Fifth Entry");
10: // -->
11: </script>
13 数组排序
1: <script language="JavaScript">
2: <!--
3: var myArray = new Array(5);
4: myArray[0] = “z";
5: myArray[1] = “c";
6: myArray[2] = “d";
7: myArray[3] = “a";
8: myArray[4] = “q";
9: document.write(myArray.sort());
10: // -->
11: </script>
14 分割字符串
1: <script language="JavaScript">
2: <!--
3: var myVariable = “a,b,c,d";
4: var stringArray = myVariable.split(“,");
5: document.write(stringArray[0]);
6: document.write(stringArray[1]);
7: document.write(stringArray[2]);
8: document.write(stringArray[3]);
9: // -->
10: </script>
15 弹出警告信息
1: <script language="JavaScript">
2: <!--
3: window.alert(“Hello");
4: // -->
5: </script>
16 弹出确认框
1: <script language="JavaScript">
2: <!--
3: var result = window.confirm(“Click OK to continue");
4: // -->
5: </script>
17 定义函数
1: <script language="JavaScript">
2: <!--
3: function multiple(number1,number2) {
4: var result = number1 * number2;
5: return result;
6: }
7: // -->
8: </script>
18 调用JS函数
1: <a href="#" onClick="functionName()">Link text</a>
2: <a href="/"javascript:functionName"()">Link text</a>
19 在页面加载完成后执行函数
1: <body onLoad="functionName();">
2: Body of the page
3: </body>
20 条件判断
1: <script>
2: <!--
3: var userChoice = window.confirm(“Choose OK or Cancel");
4: var result = (userChoice == true) ? “OK" : “Cancel";
5: document.write(result);
6: // -->
7: </script>
21 指定次数循环
1: <script>
2: <!--
3: var myArray = new Array(3);
4: myArray[0] = “Item 0";
5: myArray[1] = “Item 1";
6: myArray[2] = “Item 2";
7: for (i = 0; i < myArray.length; i++) {
8: document.write(myArray[i] + “<br>");
9: }
10: // -->
11: </script>
22 设定将来执行
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: }
6: window.setTimeout(“hello()",5000);
7: // -->
8: </script>
23 定时执行函数
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: window.setTimeout(“hello()",5000);
6: }
7: window.setTimeout(“hello()",5000);
8: // -->
9: </script>
24 取消定时执行
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: }
6: var myTimeout = window.setTimeout(“hello()",5000);
7: window.clearTimeout(myTimeout);
8: // -->
9: </script>
25 在页面卸载时候执行函数
1: <body onUnload="functionName();">
2: Body of the page
3: </body>
相关文章
这篇文章主要为大家详细介绍了JS制作网站吸顶条，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下2020-01-01
这篇文章主要为大家详细介绍了JavaScript实现图片放大镜效果，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下2019-06-06
在JavaScript中，内存泄漏通常是由于变量、对象、闭包、事件监听器等长期存在而没有被释放引起的。本文就来和大家总结一下常见的几种情况以及解决方法吧2023-05-05
这篇文章主要介绍了详解微信小程序之scroll-view的flex布局问题，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧2019-01-01
自己辛辛苦苦写的文章，轻易就被别人复制－粘贴去了，是不是很伤心呢？小编今天给大家整理了两个方法，让别人复制自己的文章时，自动在文章的结尾添加自己的版权信息。2016-08-08
本篇文章通过代码实例给大家讲述了如何javascript填充默认头像以及相代码分享，对此有兴趣的朋友可以学习下。2018-02-02
本篇文章主要介绍了js 文字超出长度用省略号代替,鼠标悬停并以悬浮框显示，具有一定的参考价值，有兴趣的同学可以了解一下。2016-12-12
JavaScript实现焦点进入文本框内关闭输入法的核心代码
这篇文章给大家分享js实现焦点进入文本框内关闭输入法，代码简单易懂，非常不错，具有参考借鉴价值，需要的朋友参考下吧2017-09-09
大家都知道在ES7中有了标准的回调函数嵌套的解决方案，新增了 async/await两个关键词，所以这篇文章主要给大家介绍了关于Javascript中如何利用Await减少回调嵌套的相关资料，需要的朋友可以参考借鉴，下面随着小编来一起学习学习吧。2017-11-11
这篇文章主要为大家详细介绍了Javascript 6里的4个新语法，感兴趣的小伙伴们可以参考一下2016-08-08
最新评论