此函数通过通过cammelcase等这些测试

Foo酒吧 ——foo bar __FOO_BAR__ - foo123Bar foo_Bar

function toCamelCase(str) { var arr= str.match(/[a-z]+|\d+/gi); return arr.map((m,i)=>{ let low = m.toLowerCase(); if (i!=0){ low = low.split('').map((s,k)=>k==0?s.toUpperCase():s).join`` } return low; }).join``; } console.log(toCamelCase('Foo Bar')); console.log(toCamelCase('--foo-bar--')); console.log(toCamelCase('__FOO_BAR__-')); console.log(toCamelCase('foo123Bar')); console.log(toCamelCase('foo_Bar')); console.log(toCamelCase('EquipmentClass name')); console.log(toCamelCase('Equipment className')); console.log(toCamelCase('equipment class name')); console.log(toCamelCase('Equipment Class Name'));

您可以使用以下解决方案:

function toCamelCase(str){
  return str.split(' ').map(function(word,index){
    // If it is the first word make sure to lowercase all the chars.
    if(index == 0){
      return word.toLowerCase();
    }
    // If it is not the first word only upper case the first char and lowercase the rest.
    return word.charAt(0).toUpperCase() + word.slice(1).toLowerCase();
  }).join('');
}

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。

return "hello world".toLowerCase().replace(/(?:(^.)|(\s+.))/g, function(match) {
    return match.charAt(match.length-1).toUpperCase();
}); // HelloWorld

const toCamelCase = str =>
  str
    .replace(/[^a-zA-Z0-9]+(.)/g, (m, chr) => chr.toUpperCase())
    .replace(/^\w/, c => c.toLowerCase());