function Test(){
this.func1=function(){
console.log("func1")
}
this.func2=function(){
console.log("func2")
}
this.func3=function(){
console.log("func3")
}
this.all=function(){
console.log(this)
this.func1()
this.func2()
this.func3()
}
}
var test=new Test()
test.all()//thisfunc1func2func3
setInterval(test.all,1000)//thiswindow setInterval (test.all,1000) statement? setInterval (test.all,1000) . How can I make the code work properly? your setInterval (test.all,1000) is equivalent to
setInterval(function(){
console.log(this)
this.func1()
this.func2()
this.func3()
},1000) this is out of the context of test , so this points to window
to execute normally, upload the test context: so
setInterval (test.all.apply (test), 1000) is fine
bind object goes in
setInterval (test.all.bind (test), 1000);
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