Created
December 11, 2018 14:35
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/** | |
* @param {string} varName Исходное имя переменной в змеинном_регистре | |
* @return {string} Имя переменной преобразованное к нижнемуВерблюжемуРегистру | |
*/ | |
function convertCase(varName) { | |
let underscores = ''; | |
if (varName[0] === '_') { | |
for (let i = 0; i < varName.length; i++) { | |
const char = varName[i]; | |
if (char !== '_') { | |
break; | |
} | |
underscores += char; | |
} | |
} | |
const splitedStr = varName.slice(underscores.length).split('_'); | |
for (let i = 1; i < splitedStr.length; i++) { | |
const item = splitedStr[i]; | |
splitedStr[i] = item[0].toUpperCase() + item.slice(1); | |
} | |
return underscores + splitedStr.join(''); | |
} | |
console.log( | |
convertCase('request_animation_frame'), // 'requestAnimationFrame' | |
convertCase('page_x_offset'), // 'pageXOffset' | |
convertCase('__canvas_rendering_context_2_d') // '__canvasRenderingContext2D' | |
); | |
console.log( | |
convertCase('request_animation_frame') === 'requestAnimationFrame', | |
convertCase('page_x_offset') === 'pageXOffset', | |
convertCase('__canvas_rendering_context_2_d') === '__canvasRenderingContext2D' | |
); |
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