input只能输入数字小数点后两位

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<body>
    <input style="-webkit-user-select:auto" type="Number" ref="Inp"
        onkeyup="this.value=this.value.replace(/[^d.]/g,'');" keyboardType="UIKeyboardTypeDecimalPad;" v-model="value"
        class="home-payment-input" @input="checkInput" autofocus @click="$refs.Inp.focus()" />



    <script>
        export default {
            data() {
                return {
                    value: ""
                }
            },
            methods: {
                checkInput() {
                    this.value = this.dealInputVal(this.value);
                },
                dealInputVal(value) {
                    value = value.replace(/^0*(0.|[1-9])/, "$1");
                    value = value.replace(/[^d.]/g, ""); //清除"数字"和"."以外的字符
                    value = value.replace(/^./g, ""); //验证第一个字符是数字而不是字符
                    value = value.replace(/.{1,}/g, "."); //只保留第一个.清除多余的
                    value = value
                        .replace(".", "$#$")
                        .replace(/./g, "")
                        .replace("$#$", ".");
                    value = value.replace(/^(-)*(d*).(dd).*$/, "$1$2.$3"); //只能输入两个小数
                    value =
                        value.indexOf(".") > 0 ?
                        value.split(".")[0].substring(0, 10) + "." + value.split(".")[1] :
                        value.substring(0, 10);
                    if (value == "") {
                        this.disabled = true;
                    } else if (value == Number(0)) {
                        this.disabled = true;
                    } else if (value == "0.") {
                        this.disabled = true;
                    } else {
                        this.disabled = false;
                    }
                    return value;
                },

            }
        }
    </script>
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原文地址:https://www.cnblogs.com/1609359841qq/p/13272449.html