- html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>title>
- head>
- <body>
- <p>JavaScript 赋值运算符p>
- <p id = "a">p>
- <script>
- var h = 10;
- h /= 3;
- document.getElementById("a").innerHTML = h;
- script>
- body>
- html>
JavaScript 赋值运算符
/= 赋值运算符对变量相除。
赋值
- html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>title>
- head>
- <body>
- <p>JavaScript 赋值运算符p>
- <p id = "b">p>
- <script>
- var e = 9;
- e %= 10;
- document.getElementById("b").innerHTML = e;
- script>
- body>
- html>
JavaScript 赋值运算符
%= 赋值运算符把余数赋值给变量。
赋值
- html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>title>
- head>
- <body>
- <p>JavaScript 字符串运算符p>
- <p id = "dd">p>
- <script>
- var li1 = "李白";
- var li2 = "古诗";
- document.getElementById("dd").innerHTML = li1 + " " + li2;
- script>
- body>
- html>
JavaScript 字符串运算符
+ 运算符也可用于对字符串进行相加(concatenate,级联)
- html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>title>
- head>
- <body>
- <p>JavaScript 字符串运算符p>
- <p id = "vv">p>
- <script>
- var libai1 = "李白";
- var libai2 = "古诗";
- var gushi = libai1 + libai2;
- document.getElementById("vv").innerHTML = gushi;
- script>
- body>
- html>
JavaScript 字符串运算符
+ 运算符也可用于对字符串进行相加(concatenate,级联)
- html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>title>
- head>
- <body>
- <p>JavaScript 字符串运算符p>
- <p id = "kai">p>
- <script>
- du = "百度";
- du += "一下";
- document.getElementById("kai").innerHTML = du;
- script>
- body>
- html>
JavaScript 字符串运算符
+= 赋值运算符也可用于相加(级联)字符串
在用于字符串时,+ 运算符被称为级联运算符
- html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>title>
- head>
- <body>
- <p>JavaScript 字符串运算符p>
- <p id = "ll">p>
- <script>
- var h = 3 * 3;
- var u = "3" + 9;
- var hh = "百度" + 9;
- document.getElementById("ll").innerHTML = h + "
" + u + "
" + hh; - script>
- body>
- html>
JavaScript 字符串运算符
字符串和数字的相加
相加两个数字,将返回和,但对一个数字和一个字符串相加将返回一个字符串