强制保留两位小数的js方法
//写一个公共的强制保留两位小数的js方法 function toDecimal2 (x) { var f = parseFloat(x) if (isNaN(f)) { return false } var f = Math.round(x * 100) / 100 var s = f.toString() var rs = s.indexOf(\'.\') if (rs < 0) { rs = s.length s += \'.\' } while (s.length <= rs + 2) { s += \'0\' } return s }
调用演示：
//调用演示 console.log( toDecimal2(2121) ); //2121.00 console.log( toDecimal2(2121.123) ); //2121.12 console.log( toDecimal2(2121.126) ); //2121.12
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在vue项目中可以配合vue.filter() 使用
<template>
<div class="demo">
<span>{{\'1234.135\' | toDecimal2}}</span>
</div>
</template>
<script>
export default {
name: \'\',
components: {},
data() {
return {}
},
filters: {
toDecimal2 (x) {
var f = parseFloat(x)
if ( isNaN(f) ) {
return false
}
var f = Math.round(x * 100) / 100
var s = f.toString()
var rs = s.indexOf(\'.\')
if (rs < 0) {
rs = s.length
s += \'.\'
}
while (s.length <= rs + 2) {
s += \'0\'
}
return s
}
},
}
</script>
<style scoped>
</style>
END！！