Home Web Front-end Front-end Q&A Is string an object in javascript?

Is string an object in javascript?

Nov 18, 2021 pm 03:40 PM
javascript string

String is an object in JavaScript, and the string object is used to process text and strings; the creation method of a string object is "var txt = new String("string");" or "var txt = "string"; ".

Is string an object in javascript?

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

Is string an object in javascript?

String is an object in javascript.

String object is used to process text (string).

String object creation method: new String().

Syntax

var txt = new String("string");
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Or simpler way:

var txt = "string";
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String object property

constructor对创建该对象的函数的引用
length字符串的长度
prototype允许您向对象添加属性和方法
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String object method

charAt()返回在指定位置的字符。
charCodeAt()返回在指定的位置的字符的 Unicode 编码。
concat()连接两个或更多字符串,并返回新的字符串。
endsWith()判断当前字符串是否是以指定的子字符串结尾的(区分大小写)。
fromCharCode()将 Unicode 编码转为字符。
indexOf()返回某个指定的字符串值在字符串中首次出现的位置。
includes()查找字符串中是否包含指定的子字符串。
lastIndexOf()从后向前搜索字符串,并从起始位置(0)开始计算返回字符串最后出现的位置。
match()查找找到一个或多个正则表达式的匹配。
repeat()复制字符串指定次数,并将它们连接在一起返回。
replace()在字符串中查找匹配的子串,并替换与正则表达式匹配的子串。
replaceAll()在字符串中查找匹配的子串,并替换与正则表达式匹配的所有子串。
search()查找与正则表达式相匹配的值。
slice()提取字符串的片断,并在新的字符串中返回被提取的部分。
split()把字符串分割为字符串数组。
startsWith()查看字符串是否以指定的子字符串开头。
substr()从起始索引号提取字符串中指定数目的字符。
substring()提取字符串中两个指定的索引号之间的字符。
toLowerCase()把字符串转换为小写。
toUpperCase()把字符串转换为大写。
trim()去除字符串两边的空白。
toLocaleLowerCase()根据本地主机的语言环境把字符串转换为小写。
toLocaleUpperCase()根据本地主机的语言环境把字符串转换为大写。
valueOf()返回某个字符串对象的原始值。
toString()返回一个字符串。
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String HTML wrapper method

HTML Returns the content contained in the corresponding HTML tag.

The following method is not a standard method, so it may not be supported in some browsers.

anchor()创建 HTML 锚。
big()用大号字体显示字符串。
blink()显示闪动字符串。
bold()使用粗体显示字符串。
fixed()以打字机文本显示字符串。
fontcolor()使用指定的颜色来显示字符串。
fontsize()使用指定的尺寸来显示字符串。
italics()使用斜体显示字符串。
link()将字符串显示为链接。
small()使用小字号来显示字符串。
strike()用于显示加删除线的字符串。
sub()把字符串显示为下标。
sup()把字符串显示为上标。
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Recommended study: "javascript basic tutorial"

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