查找过的资料-防丢失

数字验证（只能输入数字）

this.formData.imeicode = imeicode.replace(/[^0-9]+/g, "");

---

表单验证规则

required: true,
   message: "请输入设备编码",
   trigger: "blur"

min: 6, message: "至少输入6位数字", trigger: "blur"

---

伪数组转数组

Array.from(dom);

---

级联选择器

关闭选择器下拉框

this.$refs.refHandle.dropDownVisible = false; //监听值发生变化就关闭它

---

正则方法（regexp,replace）

testB = RegExp("company_name", "g"),

stringNewData = JSON.stringify(newData);

newStringNewData = newStringNewData.replace(testB, "name");

---

查找父元素直到满足条件为止

event.target

    .closest("div.el-tree-node__content")

    .classList.add("node-active");

el-from的回车提交

1. 在el-form上加入：@submit.native.prevent
2. 在需要提交的按钮上添加：native-type="submit"

上面这种方式在el-from的任何input的框都会触发回车提交

1. @keyup.enter.native="login"

这种方式只在对应的input内按下回车提交

​

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严谨的表单验证通常需要 前端+后端同时验证， 但传统的项目，均只能前后端各做一次检验， 后期规则变更，又得前后端同时修改。

---

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export function printCurrentDate() {

var date = new Date()

var seperator1 = ‘-’

var seperator2 = ‘:’

var month = date.getMonth() + 1

var strDate = date.getDate()

if (month >= 1 && month <= 9) {

month = ‘0’ + month

}

if (strDate >= 0 && strDate <= 9) {

strDate = ‘0’ + strDate

}

var currentdate = date.getFullYear() + seperator1 + month + seperator1 + strDate +

’ ’ + date.getHours() + seperator2 + date.getMinutes() +

seperator2 + date.getSeconds() + seperator2 + date.getMilliseconds()

}

// 小数整数位数限制

decimalsLength(val, begin, end) {

let reg = new RegExp(^(\\d{0,${begin}})(\\.(\\d{0,${end}}))?$, ‘g’)

let result = true

if (!reg.test(val)) result = false

return result

},

// 整数位数限制, 不能输入小数

integerLength(val, length) {

let reg = new RegExp(^(\\d{0,${length}})$)

let result = true

if (!reg.test(val)) result = false

return result

}

doUrlHttp(url) {

if (url.substr(0, 7).toLowerCase() == ‘http://’ || url.substr(0, 8).toLowerCase() == ‘https://’) {

url = url

} else {

url = ‘https://’ + url

}

return url

},

formatDate(source) {

let date = new Date(source)

return date.getFullYear() + ‘-’ + (date.getMonth() + 1) + ‘-’ + date.getDate()

},

dateFormatter(source, format) {

if (!format) {

format = ‘yyyy-MM-dd HH:mm:ss’

}

let date = new Date(source)

let args = {

‘M+’: date.getMonth() + 1,

‘d+’: date.getDate(),

‘H+’: date.getHours(),

‘m+’: date.getMinutes(),

‘s+’: date.getSeconds(),

‘q+’: Math.floor((date.getMonth() + 3) / 3), // quarter

‘S’: date.getMilliseconds()

}

if (/(y+)/.test(format)) {

format = format.replace(RegExp.$1,

(date.getFullYear() + ‘’).substr(4 - RegExp.$1.length))

}

for (let i in args) {

let n = args[i]

if (new RegExp(’(’ + i + ‘)’).test(format)) {

format = format.replace(RegExp.$1,

​ RegExp.$1.length === 1 ? n : (‘00’ + n).substr((’’ + n).length))

}

}

return format

},

validateFileName(value) {

var pattern = new RegExp(’[#$^&()=|,\[\]./?~！@#￥……&——|【】？]’)

if (pattern.test(value.value)) {

return true

}

return false

},

fileName: {

required: true,

type: ‘string’,

pattern: /^((?![\/

标签：return,strDate,month,var,查找,let,丢失,资料,date
来源： https://blog.csdn.net/m0_46208009/article/details/114536113