初学者必须知道的Console调试方法

console​.log

• console.log(obj1 [, obj2, ..., objN);
• console.log(msg [, subst1, ..., substN);
• console.log('String: %s, Int: %d,Float: %f, Object: %o', str, ints, floats, obj)
• console.log(temp的值为: ${temp})

console.log('123456')
console.log('debug-->', 'response failed')
console.log(1, 'messgae')
console.log(2, 'messgae')

输出

123456
debug--> response failed
1 messgae 
2 messgae

console​.time

console.timeLog

console.timeEnd

console.time('aTimer');
setTimeout(function () {
  console.timeLog('aTimer');
}, 1000);
setTimeout(function () {
  console.timeEnd('aTimer');
}, 2000);

输出

aTimer: 1005ms 
aTimer: 2009ms

更多Console使用可以参考MDN
https://developer.mozilla.org/zh-CN/docs/Web/API/console