最简单的,如果用ES6
...
initialArray = [1, 2, 3];
newArray = [ ...initialArray, 4 ]; // --> [1,2,3,4]
新数组将是[1,2,3,4]
this.setState({arrayvar:[...this.state.arrayvar, newelement]});
最简单的,如果用ES6
...
initialArray = [1, 2, 3];
newArray = [ ...initialArray, 4 ]; // --> [1,2,3,4]
新数组将是[1,2,3,4]
this.setState({arrayvar:[...this.state.arrayvar, newelement]});