JS入門代碼集合第1/4頁
更新時間：2008年05月29日 23:10:02 作者：
在閃吧看見了一篇js教程，感覺不錯 適合閱讀范圍：對JavaScript一無所知～離精通只差一步之遙的人
基礎(chǔ)知識：HTML
JavaScript就這么回事1：基礎(chǔ)知識
1 創(chuàng)建腳本塊
1: <script language=”JavaScript”>
2: JavaScript code goes here
3: </script>
2 隱藏腳本代碼
1: <script language=”JavaScript”>
2: <!--
3: document.write(“Hello”);
4: // -->
5: </script>
在不支持JavaScript的瀏覽器中將不執(zhí)行相關(guān)代碼
3 瀏覽器不支持的時候顯示
1: <noscript>
2: Hello to the non-JavaScript browser.
3: </noscript>
4 鏈接外部腳本文件
1: <script language=”JavaScript” src="/”filename.js"”></script>
5 注釋腳本
1: // This is a comment
2: document.write(“Hello”); // This is a comment
3: /*
4: All of this
5: is a comment
6: */
6 輸出到瀏覽器
1: document.write(“<strong>Hello</strong>”);
7 定義變量
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 字符串替換
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 創(chuàng)建數(shù)組
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 數(shù)組排序
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 彈出警告信息
1: <script language=”JavaScript”>
2: <!--
3: window.alert(“Hello”);
4: // -->
5: </script>
16 彈出確認框
1: <script language=”JavaScript”>
2: <!--
3: var result = window.confirm(“Click OK to continue”);
4: // -->
5: </script>
17 定義函數(shù)
1: <script language=”JavaScript”>
2: <!--
3: function multiple(number1,number2) {
4: var result = number1 * number2;
5: return result;
6: }
7: // -->
8: </script>
18 調(diào)用JS函數(shù)
1: <a href=”#” onClick=”functionName()”>Link text</a>
2: <a href="/”javascript:functionName"()”>Link text</a>
19 在頁面加載完成后執(zhí)行函數(shù)
1: <body onLoad=”functionName();”>
2: Body of the page
3: </body>
20 條件判斷
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>
JavaScript就這么回事1：基礎(chǔ)知識
1 創(chuàng)建腳本塊
1: <script language=”JavaScript”>
2: JavaScript code goes here
3: </script>
2 隱藏腳本代碼
1: <script language=”JavaScript”>
2: <!--
3: document.write(“Hello”);
4: // -->
5: </script>
在不支持JavaScript的瀏覽器中將不執(zhí)行相關(guān)代碼
3 瀏覽器不支持的時候顯示
1: <noscript>
2: Hello to the non-JavaScript browser.
3: </noscript>
4 鏈接外部腳本文件
1: <script language=”JavaScript” src="/”filename.js"”></script>
5 注釋腳本
1: // This is a comment
2: document.write(“Hello”); // This is a comment
3: /*
4: All of this
5: is a comment
6: */
6 輸出到瀏覽器
1: document.write(“<strong>Hello</strong>”);
7 定義變量
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 字符串替換
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 創(chuàng)建數(shù)組
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 數(shù)組排序
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 彈出警告信息
1: <script language=”JavaScript”>
2: <!--
3: window.alert(“Hello”);
4: // -->
5: </script>
16 彈出確認框
1: <script language=”JavaScript”>
2: <!--
3: var result = window.confirm(“Click OK to continue”);
4: // -->
5: </script>
17 定義函數(shù)
1: <script language=”JavaScript”>
2: <!--
3: function multiple(number1,number2) {
4: var result = number1 * number2;
5: return result;
6: }
7: // -->
8: </script>
18 調(diào)用JS函數(shù)
1: <a href=”#” onClick=”functionName()”>Link text</a>
2: <a href="/”javascript:functionName"()”>Link text</a>
19 在頁面加載完成后執(zhí)行函數(shù)
1: <body onLoad=”functionName();”>
2: Body of the page
3: </body>
20 條件判斷
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>
相關(guān)文章
詳解在網(wǎng)頁上通過JS實現(xiàn)文本的語音朗讀
這篇文章主要介紹了在網(wǎng)頁上通過JS實現(xiàn)文本的語音朗讀，文中通過示例代碼介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值，需要的朋友們下面隨著小編來一起學習學習吧2019-03-03
js輸寫最好還是可以面向?qū)ο蠓绞?用類方向進行包裝 js輸寫兩種方式 閉包 原型2010-03-03
js onkeypress與onkeydown 事件區(qū)別詳細說明
本文將詳細介紹js onkeypress與onkeydown 事件區(qū)別:一個放開一個沒有放開,onkeydown先于onkeypress 發(fā)生，需要的朋友可以參考下2012-12-12
當任意一個塊級元素的寬度或高度被顯式指定，它應(yīng)當只確定這個可見元素自身(內(nèi)容區(qū))的寬度或高度，而padding, border和margin隨后被應(yīng)用2012-12-12
javascript下for循環(huán)用法小結(jié)
javascript下for循環(huán)用法小結(jié)...2007-07-07
JavaScript中的Math.SQRT1_2屬性使用簡介
這篇文章主要介紹了JavaScript中的Math.SQRT1_2屬性的使用,是JS入門學習中的基礎(chǔ)知識,需要的朋友可以參考下2015-06-06
這篇文章主要介紹了js的Map函數(shù)使用方法詳解,需要的朋友可以參考下2022-01-01
這篇文章主要介紹了javascript 實現(xiàn)原路返回的方法,需要的朋友可以參考下2015-01-01
javascript 數(shù)組的定義和數(shù)組的長度
本文主要介紹javascript 數(shù)組的定義和數(shù)組的長度，比較簡單，希望能給大家做一個參考。2016-06-06
用Object.prototype.toString.call(obj)檢測對象類型原因分析
在本篇文章里我們給大家剖析了用Object.prototype.toString.call(obj)檢測對象類型的原因，需要的朋友們可以學習下。2018-10-10