字符串 | String 目录 String string.@@iterator string.charAt string.charCodeAt string.codePointAt string.concat string.endsWith String.fromCharCode String.fromCodePoint string.includes string.indexOf string.lastIndexOf string.length string.localeCompare string.match string.normalize string.padEnd string.padStart String.prototype String.raw string.repeat string.replace string.search string.slice string.split string.startsWith string.substr string.substring string.toLocaleLowerCase string.toLocaleUpperCase string.toLowerCase string.toString string.toUpperCase string.trim string.valueOf
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