如何使用javascript正则表达式将字符串转换为驼峰大小写?
设备类名称或 设备类名或设备类名或设备类名
应该全部变成:equipmentClassName。
当前回答
Lodash可以很好地做到这一点:
var _ = require('lodash');
var result = _.camelCase('toto-ce héros')
// result now contains "totoCeHeros"
虽然lodash可能是一个“大”库(~4kB)，但它包含了许多通常使用代码片段或自己构建的函数。
其他回答
快速的方法
function toCamelCase(str) {
return str[0].toUpperCase() + str.substr(1).toLowerCase();
}
Lodash可以很好地做到这一点:
var _ = require('lodash');
var result = _.camelCase('toto-ce héros')
// result now contains "totoCeHeros"
虽然lodash可能是一个“大”库(~4kB)，但它包含了许多通常使用代码片段或自己构建的函数。
以下是我的建议:
function toCamelCase(string) {
return `${string}`
.replace(new RegExp(/[-_]+/, 'g'), ' ')
.replace(new RegExp(/[^\w\s]/, 'g'), '')
.replace(
new RegExp(/\s+(.)(\w+)/, 'g'),
($1, $2, $3) => `${$2.toUpperCase() + $3.toLowerCase()}`
)
.replace(new RegExp(/\s/, 'g'), '')
.replace(new RegExp(/\w/), s => s.toLowerCase());
}
or
String.prototype.toCamelCase = function() {
return this
.replace(new RegExp(/[-_]+/, 'g'), ' ')
.replace(new RegExp(/[^\w\s]/, 'g'), '')
.replace(
new RegExp(/\s+(.)(\w+)/, 'g'),
($1, $2, $3) => `${$2.toUpperCase() + $3.toLowerCase()}`
)
.replace(new RegExp(/\s/, 'g'), '')
.replace(new RegExp(/\w/), s => s.toLowerCase());
};
测试用例:
describe('String to camel case', function() {
it('should return a camel cased string', function() {
chai.assert.equal(toCamelCase('foo bar'), 'fooBar');
chai.assert.equal(toCamelCase('Foo Bar'), 'fooBar');
chai.assert.equal(toCamelCase('fooBar'), 'fooBar');
chai.assert.equal(toCamelCase('FooBar'), 'fooBar');
chai.assert.equal(toCamelCase('--foo-bar--'), 'fooBar');
chai.assert.equal(toCamelCase('__FOO_BAR__'), 'fooBar');
chai.assert.equal(toCamelCase('!--foo-¿?-bar--121-**%'), 'fooBar121');
});
});
可靠的高性能示例:
function camelize(text) {
const a = text.toLowerCase()
.replace(/[-_\s.]+(.)?/g, (_, c) => c ? c.toUpperCase() : '');
return a.substring(0, 1).toLowerCase() + a.substring(1);
}
情况下,修改字符:
连字符- 下划线_ 时期。 空间
以下所有14个排列产生相同的“equipmentClassName”结果。
String.prototype.toCamelCase = function() { return this.replace(/[^a-z ]/ig, '') // Replace everything but letters and spaces. .replace(/(?:^\w|[A-Z]|\b\w|\s+)/g, // Find non-words, uppercase letters, leading-word letters, and multiple spaces. function(match, index) { return +match === 0 ? "" : match[index === 0 ? 'toLowerCase' : 'toUpperCase'](); }); } String.toCamelCase = function(str) { return str.toCamelCase(); } var testCases = [ "equipment class name", "equipment class Name", "equipment Class name", "equipment Class Name", "Equipment class name", "Equipment class Name", "Equipment Class name", "Equipment Class Name", "equipment className", "equipment ClassName", "Equipment ClassName", "equipmentClass name", "equipmentClass Name", "EquipmentClass Name" ]; for (var i = 0; i < testCases.length; i++) { console.log(testCases[i].toCamelCase()); };
