33 lines
818 B
JavaScript
33 lines
818 B
JavaScript
export function isDef(value) {
|
|
return value !== undefined && value !== null;
|
|
}
|
|
export function isObj(x) {
|
|
const type = typeof x;
|
|
return x !== null && (type === 'object' || type === 'function');
|
|
}
|
|
export function isNumber(value) {
|
|
return /^\d+(\.\d+)?$/.test(value);
|
|
}
|
|
export function range(num, min, max) {
|
|
return Math.min(Math.max(num, min), max);
|
|
}
|
|
export function nextTick(fn) {
|
|
setTimeout(() => {
|
|
fn();
|
|
}, 1000 / 30);
|
|
}
|
|
// let systemInfo = null;
|
|
// export function getSystemInfoSync() {
|
|
// if (systemInfo == null) {
|
|
// systemInfo = wx.getSystemInfoSync();
|
|
// }
|
|
// return systemInfo;
|
|
// }
|
|
export function addUnit(value) {
|
|
if (!isDef(value)) {
|
|
return undefined;
|
|
}
|
|
value = String(value);
|
|
return isNumber(value) ? `${value}px` : value;
|
|
}
|