<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>react-CreateElment</title> </head> <body> <!-- <div id="geyao">geyao</div> --> <script> const TEST = { key: true, ref: true, __self: true, __source: true, }; function createElment(type, config, ...children) { let propName; const props = {}; let key = '' + config.key; let ref = config.ref; let self = config.__self; let source = config.__source console.log(config, "config is 1") for (propName in config) { if (config.hasOwnProperty(propName) && !TEST.hasOwnProperty(propName)) { props[propName] = config[propName]; } console.log(props, "config is 2") } } createElment("div", { id: "geyao" }, "geyao" // createElement("div", { id: "very" }, "very"), // createElement("div", { id: "nice" }, "nice") ) </script> </body> </html>
其中的条件进行一个过滤
