node.js - react-codemirror beforeChange event -


i using react-codemirror npm module follows:

<codemirror classname={classname} value={this.state.code} onbeforechange= {this.onbeforechange} onchange={this.onchange} options={options}/>

the change event works fine can't seem hook beforechange event. know doing wrong?

i have declared handlers in class follows:

onbeforechange(change) {   console.log('calling beforechange') }  onchange(newcode) {   this.setstate({     code: newcode   }) }

the beforechange event documented in codemirror docs. https://codemirror.net/doc/manual.html#event_beforechange

thanks

it turns out react-codemirror not expose beforechange event.

however, react-codemirror2 does. switch of library fixed me!

my final callback code:

onbeforechange(cm, change, callonchange) {    const options = object.assign({}, default_options, this.props.options)    if (options.singleline) {     var after = change.text.join('').replace(/\n/g, '')     change.update(change.from, change.to, [after])   }    callonchange() }  onchange(cm, change, code) {    this.setstate({ code })    if (this.props.onchange) {     this.props.onchange(code)   } }

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