var name = 'weihui'; (function() { if (typeof name === 'undefined') { var name = 'bigo'; console.log('good' + name); } else { console.log('Hello ' + name); } })()
var arr = []; var obj = {a: 1}; arr.push(obj); console.log(arr); obj.a = 2; console.log(arr); var obj1= obj; obj = {a: 3}; console.log(arr); obj1.a = 4; console.log(arr);
new Promise((resolve, reject) => { console.log("Promise1"); resolve(); }).then(() => { console.log("then1-1"); new Promise((resolve, reject) => { console.log("Promise2"); resolve(); }).then(() => { console.log("then2-1"); }).then(() => { console.log("then2-2"); }) }).then(() => { console.log("then1-2"); })
本文作者:前端小毛
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