Polyfills.html 1.7 KB

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  1. <!DOCTYPE html>
  2. <html lang="zh">
  3. <head>
  4. <meta charset="utf-8" />
  5. <base href="../../" />
  6. <script src="list.js"></script>
  7. <script src="page.js"></script>
  8. <link type="text/css" rel="stylesheet" href="page.css" />
  9. </head>
  10. <body>
  11. <h1>差异化支持(腻子)</h1>
  12. <p class="desc">Three.js 包含以下方法和常量的差异化支持.</p>
  13. <h3>[page:Number.EPSILON Number.EPSILON]</h3>
  14. <p>
  15. 表示1和大于1的最小差值,可表示为 Number.
  16. [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/EPSILON MDN reference].
  17. </p>
  18. <h3>[page:Math.sign Math.sign]( [page:Number x] )</h3>
  19. <p>
  20. 如果参数为 正数,负数,正零 或 负零,
  21. 该方法将分别返回 1, -1, 0 或 -0 . 否则, 返回 NaN.
  22. [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/sign MDN reference].
  23. </p>
  24. <h3>[page:Function.prototype.name Function.prototype.name]( [page:Number x] )</h3>
  25. <p>
  26. 返回方法的名字, 或 (在 ES6 实现之前) 为匿名方法返回一个空字符串.
  27. [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name MDN reference].
  28. </p>
  29. <h3>[page:Object.assign Object.assign]( [page:Object target], [page:Object ...sources] )</h3>
  30. <p>
  31. Object.assign() 方法用于从一个或多个源对象拷贝所有可枚举自身属性到目标对象.
  32. 该方法将返回目标对象.
  33. [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign MDN reference].
  34. </p>
  35. <h2>源码</h2>
  36. <p>
  37. [link:https://github.com/mrdoob/three.js/blob/master/src/polyfills.js src/polyfills.js]
  38. </p>
  39. </body>
  40. </html>