Array.prototype.slice() - JavaScript | javascript slice
Inthefollowingexample,slicecreatesanewarray,newCar,frommyCar.BothincludeareferencetotheobjectmyHonda.WhenthecolorofmyHondaischangedtopurple,botharraysreflectthechange.varmyHonda={color:red,wheels:4,engine:{cylinders:4,size:2.2}};varmyCar=[myHonda,2,cherrycondition,purchased1997];varnewCar=myCar.slice(0,2);console.log(myCar=+JSON.stringify(myCar));console.log(newCar=+JSON.stringify(newCar));console.log(myCar[0].color=+myCar[0].color);console.log(newCar[0].color=+newCar[0].color);myHonda.color...
In the following example, slice creates a new array, newCar, from myCar. Both include a reference to the object myHonda. When the color of myHonda is changed to purple, both arrays reflect the change.
var myHonda = { color: red, wheels: 4, engine: { cylinders: 4, size: 2.2 } }; var myCar = [myHonda, 2, cherry condition, purchased 1997]; var newCar = myCar.slice(0, 2); console.log(myCar = + JSON.stringify(myCar)); console.log(newCar = + JSON.stringify(newCar)); console.log(myCar[0].color = + myCar[0].color); console.log(newCar[0].color = + newCar[0].color); myHonda.color = purple; console.log(The new color of my Honda is + myHonda.color); console.log(myCar[0].color = + myCar[0].color); console.log(newCar[0].color = + newCar[0].color);This script writes:
myCar = [{color: red, wheels: 4, engine: {cylinders: 4, size: 2.2}}, 2, cherry condition, purchased 1997] newCar = [{color: red, wheels: 4, engine: {cylinders: 4, size: 2.2}}, 2] myCar[0].color = r...取得本站獨家住宿推薦 15%OFF 訂房優惠
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Array.prototype.slice() - JavaScript | javascript slice
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JavaScript Array slice() Method | javascript slice
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