字符串练习，请老师检查
来源：3-15 编程练习
慕莱坞855634
2020-12-31 16:20:03
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script>
var person = "程序员"
var str = '慕课网，' + person + '的梦工厂！'
console.log(str)
</script>
<script>
str = '所有语言中,JavaScript是最好的语言!';
console.log(str.substr(6,10));
</script>
<script>
var str="unbelievable";
console.log(str.indexOf('b'));
</script>
<script>
var str = 'language';
var strLength = str + '长度为' + str.length;
console.log(strLength);
</script>
<script>
var str="Never deter till tomorrow that which you can do today";
var index= str.indexOf('tomorrow');//获取到“tomorrow“在字符串中的位置
var strNew= str.substr(index,8);//将“tomorrow“从字符串中截取出来
var upperStr= 'Never deter till ' + strNew.toUpperCase() + ' that which you can do today';//将它转化为大写
document.write(upperStr);
</script>
</body>
</html>
1回答
-
好帮手慕久久
2020-12-31
同学你好，代码都正确，很棒，祝学习愉快！
0
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