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| | | <html> |
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| | | <head> |
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| | | <title>Promise</title> |
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| | | <script type='text/javascript'> |
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| | | var ok = true; |
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| | | function successCallBack(){ |
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| | | console.log("成功"); |
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| | | }; |
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| | | function failureCallBack(){ |
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| | | console.log("失败"); |
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| | | }; |
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| | | function successCallBack1(){ |
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| | | console.log("成功1"); |
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| | | }; |
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| | | function failureCallBack1(){ |
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| | | console.log("失败1"); |
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| | | }; |
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| | | |
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| | | const wait = ()=> new Promise((resolve,reject)=> { |
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| | | setTimeout(() => { |
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| | | console.log('setTimeout1执行完毕'); |
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| | | resolve(); |
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| | | }, 0); |
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| | | }); |
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| | | |
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| | | //调用报错，wait2返回的是setTimeout方法。 |
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| | | const wait1 = ()=> setTimeout(() => { |
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| | | console.log('setTimeout2执行完毕'); |
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| | | return new Promise((resolve,reject)=> { |
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| | | resolve(); |
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| | | }); |
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| | | }, 0); |
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| | | |
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| | | |
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| | | var use = wait().then(successCallBack,failureCallBack).then(successCallBack1,failureCallBack1); |
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| | | </script> |
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| | | </head> |
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| | | <body> |
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| | | |
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| | | </body> |
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| | | </html> |
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