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diff --git a/files/ko/web/javascript/reference/global_objects/math/ceil/index.html b/files/ko/web/javascript/reference/global_objects/math/ceil/index.html new file mode 100644 index 0000000000..ee5998fa83 --- /dev/null +++ b/files/ko/web/javascript/reference/global_objects/math/ceil/index.html @@ -0,0 +1,209 @@ +--- +title: Math.ceil() +slug: Web/JavaScript/Reference/Global_Objects/Math/ceil +translation_of: Web/JavaScript/Reference/Global_Objects/Math/ceil +--- +<div>{{JSRef}}</div> + +<div>Math.ceil() 함수는 주어진 숫자보다 크거나 같은 숫자 중 가장 작은 숫자를 integer 로 반환합니다.</div> + +<div> </div> + +<h2 id="Syntax_(문법)">Syntax (문법)</h2> + +<pre class="syntaxbox"><code>Math.ceil(<var>x</var>)</code></pre> + +<h3 id="Parameters_(매개변수)">Parameters (매개변수)</h3> + +<dl> + <dt><code>x</code></dt> + <dd>숫자</dd> +</dl> + +<h3 id="Return_value_(반환값)">Return value (반환값)</h3> + +<p>주어진 숫자보다 크거나 같은 숫자 중 가장 작은 숫자</p> + +<h2 id="Description_(설명)">Description (설명)</h2> + +<p>ceil() 은 Math 의 정적 메소드이므로, 사용자가 생성하는 Math 객체의 메소드처럼 사용하지 않고, 언제나 Math.ceil() 의 형태로 사용 합니다. (Math 는 생성자가 아님)</p> + +<h2 id="Examples_(예제)">Examples (예제)</h2> + +<h3 id="Math.ceil()_사용_예">Math.ceil() 사용 예</h3> + +<p>다음은 Math.ceil() 의 사용 예입니다.</p> + +<pre class="brush: js">Math.ceil(.95); // 1 +Math.ceil(4); // 4 +Math.ceil(7.004); // 8 +Math.ceil(-0.95); // -0 +Math.ceil(-4); // -4 +Math.ceil(-7.004); // -7 +</pre> + +<h3 id="소수점_처리">소수점 처리</h3> + +<pre class="brush: js">// Closure +(function() { + /** + * Decimal adjustment of a number. + * + * @param {String} type The type of adjustment. + * @param {Number} value The number. + * @param {Integer} exp The exponent (the 10 logarithm of the adjustment base). + * @returns {Number} The adjusted value. + */ + function decimalAdjust(type, value, exp) { + // If the exp is undefined or zero... + if (typeof exp === 'undefined' || +exp === 0) { + return Math[type](value); + } + value = +value; + exp = +exp; + // If the value is not a number or the exp is not an integer... + if (isNaN(value) || !(typeof exp === 'number' && exp % 1 === 0)) { + return NaN; + } + // Shift + value = value.toString().split('e'); + value = Math[type](+(value[0] + 'e' + (value[1] ? (+value[1] - exp) : -exp))); + // Shift back + value = value.toString().split('e'); + return +(value[0] + 'e' + (value[1] ? (+value[1] + exp) : exp)); + } + + // Decimal round + if (!Math.round10) { + Math.round10 = function(value, exp) { + return decimalAdjust('round', value, exp); + }; + } + // Decimal floor + if (!Math.floor10) { + Math.floor10 = function(value, exp) { + return decimalAdjust('floor', value, exp); + }; + } + // Decimal ceil + if (!Math.ceil10) { + Math.ceil10 = function(value, exp) { + return decimalAdjust('ceil', value, exp); + }; + } +})(); + +// Round +Math.round10(55.55, -1); // 55.6 +Math.round10(55.549, -1); // 55.5 +Math.round10(55, 1); // 60 +Math.round10(54.9, 1); // 50 +Math.round10(-55.55, -1); // -55.5 +Math.round10(-55.551, -1); // -55.6 +Math.round10(-55, 1); // -50 +Math.round10(-55.1, 1); // -60 +// Floor +Math.floor10(55.59, -1); // 55.5 +Math.floor10(59, 1); // 50 +Math.floor10(-55.51, -1); // -55.6 +Math.floor10(-51, 1); // -60 +// Ceil +Math.ceil10(55.51, -1); // 55.6 +Math.ceil10(51, 1); // 60 +Math.ceil10(-55.59, -1); // -55.5 +Math.ceil10(-59, 1); // -50 +</pre> + +<h2 id="Specifications_(사용법)">Specifications (사용법)</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + <tr> + <td>{{SpecName('ES1')}}</td> + <td>{{Spec2('ES1')}}</td> + <td>Initial definition. Implemented in JavaScript 1.0.</td> + </tr> + <tr> + <td>{{SpecName('ES5.1', '#sec-15.8.2.6', 'Math.ceil')}}</td> + <td>{{Spec2('ES5.1')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ES6', '#sec-math.ceil', 'Math.ceil')}}</td> + <td>{{Spec2('ES6')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ESDraft', '#sec-math.ceil', 'Math.ceil')}}</td> + <td>{{Spec2('ESDraft')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility_(브라우저_호환성)">Browser compatibility (브라우저 호환성)</h2> + +<div>{{CompatibilityTable}}</div> + +<div id="compat-desktop"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Chrome</th> + <th>Firefox (Gecko)</th> + <th>Internet Explorer</th> + <th>Opera</th> + <th>Safari</th> + </tr> + <tr> + <td>Basic support</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<div id="compat-mobile"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Android</th> + <th>Chrome for Android</th> + <th>Firefox Mobile (Gecko)</th> + <th>IE Mobile</th> + <th>Opera Mobile</th> + <th>Safari Mobile</th> + </tr> + <tr> + <td>Basic support</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="See_also_(추가_참조)">See also (추가 참조)</h2> + +<ul> + <li>{{jsxref("Math.abs()")}}</li> + <li>{{jsxref("Math.floor()")}}</li> + <li>{{jsxref("Math.round()")}}</li> + <li>{{jsxref("Math.sign()")}}</li> + <li>{{jsxref("Math.trunc()")}}</li> +</ul> |