: @! ~8 q, C* g' X) H3 I2 }/ L! C) O2. console.error() 4 t2 H. P- u# @ F0 K; L2 I, S此方法用于将错误消息记录到控制台。在测试代码时很有用。默认情况下,错误消息将突出显示为红色。+ c4 [/ `+ k' M5 L u8 f
// console.time() and console.timeEnd() method
// console.time() method
console.time("Let's see time console")
let time1 = function(){
console.log('time1 function is running')
}
let time2 = function(){
console.log('time2 function is running')
}
time1()
time2()
// console.timeEnd() method
console.timeEnd('Time Taken')
; N) l3 ?7 E. r9 u- i. ~3 P7 o0 F! b 6. console.table() 0 W0 [! v$ a$ ?8 G0 J3 h这个方法允许我们在控制台中生成表格。输入数据必须是数组或显示为表格的对象。 5 A: m- B$ r3 Z7 v8 s, o! a
// console.group() and console.groupEnd() method
// console.group() method
console.group('This is a sample group')
console.log('This is a sample group log')
console.warn('This is a sample group warning')
console.error('This is a sample group error')
// console.groupEnd() method
console.groupEnd('This is a sample group')
console.log('This is a new section')