array-element-newline
许多风格指南要求或禁止数组元素之间的换行符。
规则详情
此规则强制在数组元素之间换行。
选项
此规则具有字符串选项
"always"
(默认) 要求在数组元素之间换行"never"
禁止在数组元素之间换行"consistent"
要求在数组元素之间一致使用换行符
或对象选项(如果满足任何属性,则需要换行符。否则,禁止换行符)
"multiline": <boolean>
如果元素内部有换行符,则需要换行符。如果为 false,则禁用此条件。"minItems": <number>
如果元素数量至少为给定的整数,则需要换行符。如果为 0,则此条件将与选项"always"
相同。如果为null
(默认值),则禁用此条件。
或者,可以为数组表达式和数组模式指定不同的配置
json
{
"array-element-newline": ["error", {
"ArrayExpression": "consistent",
"ArrayPattern": { "minItems": 3 },
}]
}
"ArrayExpression"
数组表达式的配置(如果未指定,此规则将不适用于数组表达式)"ArrayPattern"
解构赋值的数组模式的配置(如果未指定,此规则将不适用于数组模式)
always
使用默认 "always"
选项时,此规则的不正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", "always"]*/
var c = [1, 2];
var d = [1, 2, 3];
var e = [1, 2, 3
];
var f = [
1, 2, 3
];
var g = [
function foo() {
dosomething();
}, function bar() {
dosomething();
}
];
incorrect
使用默认 "always"
选项时,此规则的正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", "always"]*/
var a = [];
var b = [1];
var c = [1,
2];
var d = [1,
2,
3];
var d = [
1,
2,
3
];
var e = [
function foo() {
dosomething();
},
function bar() {
dosomething();
}
];
correct
never
使用 "never"
选项时,此规则的不正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", "never"]*/
var c = [
1,
2
];
var d = [
1,
2,
3
];
var e = [
function foo() {
dosomething();
},
function bar() {
dosomething();
}
];
incorrect
使用 "never"
选项时,此规则的正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", "never"]*/
var a = [];
var b = [1];
var c = [1, 2];
var d = [1, 2, 3];
var e = [
1, 2, 3];
var f = [
1, 2, 3
];
var g = [
function foo() {
dosomething();
}, function bar() {
dosomething();
}
];
correct
consistent
使用 "consistent"
选项时,此规则的不正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", "consistent"]*/
var a = [
1, 2,
3
];
var b = [
function foo() {
dosomething();
}, function bar() {
dosomething();
},
function baz() {
dosomething();
}
];
incorrect
使用 "consistent"
选项时,此规则的正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", "consistent"]*/
var a = [];
var b = [1];
var c = [1, 2];
var d = [1, 2, 3];
var e = [
1,
2
];
var f = [
1,
2,
3
];
var g = [
function foo() {
dosomething();
}, function bar() {
dosomething();
}, function baz() {
dosomething();
}
];
var h = [
function foo() {
dosomething();
},
function bar() {
dosomething();
},
function baz() {
dosomething();
}
];
correct
多行
使用 { "multiline": true }
选项时,此规则的错误代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", { "multiline": true }]*/
var d = [1,
2, 3];
var e = [
function foo() {
dosomething();
}, function bar() {
dosomething();
}
];
incorrect
使用 { "multiline": true }
选项时,此规则的正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", { "multiline": true }]*/
var a = [];
var b = [1];
var c = [1, 2];
var d = [1, 2, 3];
var e = [
function foo() {
dosomething();
},
function bar() {
dosomething();
}
];
correct
最小项数
使用 { "minItems": 3 }
选项时,此规则的错误代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", { "minItems": 3 }]*/
var c = [1,
2];
var d = [1, 2, 3];
var e = [
function foo() {
dosomething();
},
function bar() {
dosomething();
}
];
incorrect
使用 { "minItems": 3 }
选项时,此规则的正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", { "minItems": 3 }]*/
var a = [];
var b = [1];
var c = [1, 2];
var d = [1,
2,
3];
var e = [
function foo() {
dosomething();
}, function bar() {
dosomething();
}
];
correct
多行和最小项数
使用 { "multiline": true, "minItems": 3 }
选项时,此规则的错误代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", { "multiline": true, "minItems": 3 }]*/
var c = [1,
2];
var d = [1, 2, 3];
var e = [
function foo() {
dosomething();
}, function bar() {
dosomething();
}
];
incorrect
使用 { "multiline": true, "minItems": 3 }
选项时,此规则的正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", { "multiline": true, "minItems": 3 }]*/
var a = [];
var b = [1];
var c = [1, 2];
var d = [1,
2,
3];
var e = [
function foo() {
dosomething();
},
function bar() {
dosomething();
}
];
correct
数组表达式和数组模式
使用 { "ArrayExpression": "always", "ArrayPattern": "never" }
选项时,此规则的错误代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", { "ArrayExpression": "always", "ArrayPattern": "never" }]*/
var a = [1, 2];
var b = [1, 2, 3];
var c = [
function foo() {
dosomething();
}, function bar() {
dosomething();
}
];
var [d,
e] = arr;
var [f,
g,
h] = arr;
var [i = function foo() {
dosomething()
},
j = function bar() {
dosomething()
}] = arr
incorrect
使用 { "ArrayExpression": "always", "ArrayPattern": "never" }
选项时,此规则的正确代码示例
js
/*eslint @stylistic/js/array-element-newline: ["error", { "ArrayExpression": "always", "ArrayPattern": "never" }]*/
var a = [1,
2];
var b = [1,
2,
3];
var c = [
function foo() {
dosomething();
},
function bar() {
dosomething();
}
];
var [d, e] = arr
var [f, g, h] = arr
var [i = function foo() {
dosomething()
}, j = function bar() {
dosomething()
}] = arr
correct
何时不使用它
如果您不想在数组元素之间强制换行,请不要启用此规则。