onInput = ({ detail }) => { const value = detail.value; // 输入的字符串 const newValue = value.replace(/([^0-9])/g, ‘‘); // 只允许输入数字 const formatValue = newValue.replace(/(\d{4})(?=\d)/g, ‘$1 ‘); // 每4个数字后面加一个空格 const inputLen = this.getOriginValue().length; if (inputLen > this.maxLen) { // 如果输入的字符大于最大输入长度则禁止继续输入 this.inputRef.inputRef.value = this.state.recharge_phone; return; } const end = () => { setTimeout(() => { this.end(); }, 10); }; if (inputLen >= this.minLen) { this.setState({ isValidNo: true, recharge_phone: formatValue }, end); } else { this.setState( { isValidNo: false, recharge_phone: formatValue, activeItem: -1 }, end ); } return formatValue; }; /** * 移动光标位置到最后面 */ end() { const obj = this.inputRef.inputRef; const len = this.state.recharge_phone.length; if (document.hasOwnProperty(‘selection‘)) { const sel = obj.createTextRange(); sel.moveStart(‘character‘, len); sel.collapse(); sel.select(); } else if ( typeof obj.selectionStart === ‘number‘ && typeof obj.selectionEnd === ‘number‘ ) { obj.selectionStart = obj.selectionEnd = len + 1; } } /** * 获取input的原始值 */ getOriginValue() { return this.inputRef.inputRef.value.split(‘ ‘).join(‘‘); }
原文地址:https://www.cnblogs.com/toward-the-sun/p/11451728.html
时间: 2024-10-20 02:51:04